Recent years, many towns and cities are creating the 'new city', and the transportation status is the first point to innovate. Such as Zhengzhou, here the railway construction is undertaken in great scale. Speaking of railway construction, machinery is necessary, such as excvavtor, crane, jaw crusher, impact crusher, belt conveyor, vibrating screen, vibrating feeder and so on. Taking the process of the railway track ballast production line as an example.

Railway track ballast is packed between, below, and around the ties. It is used to facilitate drainage of water, to distribute the load from the railroad ties, and also to keep down vegetation that might interfere with the track structure. This also serves to hold the track in place as the trains roll by. Ballast crushing and screening plant consist of jaw crusher, cone crusher, impact crusher, VSI stone crusher, vibrating screen, and belt conveyers, These machines are of advanced structure, good performance, high reliability (such as jaw crusher achieved EU CE Certificate), and praised by many customers home and abroad. The crushing and screening capability can be from 50 tons per hour to 600 tons per hour. The size of crushed product can be from 0 to 50 mm. The classification of size of crushed product can be set and adjusted according to customer’s different requests.

Big size stones are transferred to primary crusher through vibrating feeder from hopper for first crushing, then the crushed materials are transferred to impact crusher through belt conveyor for secondary crushing. The materials crushed will be transferred to the vibrating screen, and separated to different sizes. The aggregate with suitable size will be transferred to the final product pile and aggregate with unsuitable size will be transferred to the impact crusher for re-crushing. This forms a closed and manifold cycles. The sizes of final products will be graded and separated according to customers' requirements, and the duster will be attached for the sake of environment protection. The track ballast production line are reasonable combined with different crushers and have compacted special crossing distribution in their material processing flow design, so that they are small foot printed of fields, high quality in crushed products, low in quarry dust and they will give you high reward for your investment. Their advanced electric control panel can assure the whole process discharge smoothly, running reliable, operation easily and high efficiency in power consumption.

12-11-2011 om 02:42 geschreven door annazhao356  

On the seminar of equipment manufacturing in 2010, experts pointed out that the high-efficiency and energy-saving is the developing trend of the mining machinery equipment. Until today, the trend is more and more outstanding.

Experts think that opencast working equipment is developing for the high-reliability, energy-saving, high-comfort, auto-operating condition surveillance and autocontrol, which adopts many methods, such as power supply by controllable silicon, timing by AC frequency conversion, concentrated lubrication by grease, shock absorption, pressure and purification in the cab, air conditioner and noise elimination and is equipped with operating condition surveillance and autocontrol by microcomputer.

Hoisting equipment is oriented on the safety and reliable work, which adopts the computer control and dynamic measurement technique on the working life and efficiency and the build-in attrition elevator on the machine structure. The crushing equipment adopts hammer double-rotor impact crusher and the product structure is developing for the fine crushing. The development of high-new equipment requires plentiful functional materials and the application of modern fine crushing technology has become an important symbol of embodying the national technology level. Not only for fine crushing, and for ultra grinding, we design and manufacture ultra jaw crusher, micro powder grinder, high pressure Raymond mill, fine ball mill, super fine grinding machine.

For the washing equipment, all the countries are exploring the new way to meet the separating requirements of diversified minerals and different impurities and make the separating equipment developing for the high-efficiency and diversification. The high-efficiency concentrator substitutes the common concentrator in some fields and the new filter will develop quickly, such as auto-filter press with extrusion die and the horizontal belt filter. Now, the developed countries are promoting the development of single machine automatization and whole electromechanical integration. The jigger, auto-filter press, sedimentation filtering centrifuge, flotation machine, high-efficiency concentrator and swirl nozzle adopt auto control by computer for parameters. . And all our products are in good quality and high reliability.

12-11-2011 om 02:42 geschreven door annazhao356  

In the 21 century, the world machine industry enters an unprecedented high developing phase. Compared with other industries, the development of machine industry has seven characteristics:

One: The basic station

The developed countries pay much attention to the development of equipment manufacture industry, which is in the top place of the proportion, accumulation, employment and contribution and provide the important material base for the new technology, development of new products and manufacture for the equipment manufacture industry, so it is the indispensable strategic industry of the modern economy. Even the industrialized countries entering information society all pay much attention to the development of machine manufacture industry.

Second: Scale economy

The globalization manufacture has become the developing mainstream of the transnational companies. At the same time of regrouping and competition expansion, the big enterprises strengthen the investment and development for the operation to increase whose set capacity of system, individuation and diversification to adapt the market.

Three: Imbalanced development

Taking 2003 as an example, 99% of top 500 enterprises are from North America, Asia and Europe, which shows that the three continents are in the incomparable governing place in the industry of world machine.

Four: Deepening structure adjustment and change in the manufacture mode and management mode

The developed countries strengthen the industry transfer and the machine products with low adding value are arranged to be manufactured in the developing countries with potential requirements. To meet the change of market requirement, big manufacturers adopt professional manufacture and change their management mode.

Of course, there are also specific features, such as the technology innovation and quality control. We HXJQ company insist on the rule and trend to develop many new types of mining machinery to meet the society's demand, such as PE/PEX series jaw crusher, impact crusher, vertical roll mill, ball mill, high efficiency concentrator, superfine Raymond mill, belt conveyor and so on. At any time, in any occasion, technology is the vital weapon to make great progress.

12-11-2011 om 02:41 geschreven door annazhao356  

What does the gold mining brings when we talk about business? It means profit. But what does gold mining brings when we talk about nature? It will mean disaster… because doing the gold mining operations will turn the whole place into a desert without any trees to grow and without any animal to live. The gold mining operations will really change the natural resources of water shades and even lose the chances of safety living to those who lives at the low landareas of the gold mining operations. Especially the farmers who are usually been making the rivers as their source of water to take care of all their flocks and animals. Mining equipments (jaw crusher, impact crusher, ball mill) usually the gold mine operations will bring a great fight and arguments between the environmentalist and the side of the mining operators or mining company because all they up to is to take the gold without thinking the bad results that the mining could brings as long as they can get the gold deposits in that certain place. But no matter how the environmentalist will opposed the gold mining operations, it will only be heard for a while but it is always the gold mining operators who will win. Because what would be the possible opposition that the environmentalist will use to opposed about nature, the mining company can present their equipment that will serve as nature friendly according to their own evaluation. But if you will really try to look at the result of every mining operation it will only really damage the natural resources of the place because when the gold mine operations are done they will evacuate from the place and live it in a deserted life and nature. What they are going to live in that place is a totally damage place of the mountain that you will never see what it was before.

Gold mining companies are fully equip with all the heavy equipment (Raymond mill, belt conveyor, cone crusher, hammer crusher) they need to continue the gold mining operations, to bring profit for the company but not to protect the nature and the people who are living after the place where the gold mining been doing its operations. Gold mining are using dynamites to brake the mountains. As a result floods will happen anytime and all the time. When the rainy days comes, floods will risk the whole place especially the low land areas where the waters are going to overflow and damaging the huge amounts of farmlands in the lowland areas that will even kill people who cannot manage themselves from the rushing flood of water coming from the high lands. And it is very sad to know that even if these things are happening over and over again wide range of mining operations are still going on with their operations until they are done and live the place to find another gold mine explorations.

12-11-2011 om 02:40 geschreven door annazhao356  

By the policy of expanding domestic demand driven, local roads, railways and other infrastructure investment is increasing, the effective implementation of major projects, an urgent need for a large number of high-quality sand and gravel aggregate supply. For this engineering process, we provide jaw crusher, impact crusher, cone crusher.

But in order to protect the ecological balance, the state expressly prohibit unauthorized excavation of natural sand, gravel supply fell far short of demand, which requires a lot of artificial sand. The need to build the road along the gravel aggregate base to ensure adequate supply of construction, sand and gravel aggregate in the production, mainly by sand and stone equipment, production equipment, raw materials are granite, limestone, basalt, pebbles and other certain hardness stone, through the feeder, jaw-breaking, back breaking, sand making machine, vibrating screen and a series of crushing and screening equipment into the desired level.

Artificial sand determined by its own characteristics, all aspects of its applications are superior to ordinary natural sand. Sand making machines are essential: vertical impact crusher, ultra-fine Raymond mill. The thickness of sand is sand mixed with different size of the average thickness. Usually coarse sand, medium sand, fine sand of the points. Sand particle size distribution refers to the size of sand particles with the ratio. Depends on the porosity of sand grain size sand materials with a degree levels. Level with a good sand, not only can save cement, concrete and mortar also increases the density and strength. Usually coarse sand, medium sand, fine sand of the points. Artificial sand made ​​by crushing the rock, due to the high cost of flakes and powder and more generally do not. According to customer needs, or with the crusher rock crusher will be broken into the required natural fineness.

Artificial sand put into use, for ease of construction in stone of shortages has been a great help, to become the backbone of the project stone production. We HXJQ also provide high pressure grinding machines, energy saving cone ball mill and so on.

12-11-2011 om 02:39 geschreven door annazhao356  

Crushing productivity is an important technical and economic indicators, the broken particle size is guaranteed under the premise of crusher manufacturers and users are required to maximize crusher productivity, thereby improving

Crusher user economic benefits. Especially in recent years, as the global mineral depleted, but in expanding the scale of mining, crushing grinding through a sharp increase in ore processing, thereby increasing productivity is more important crusher. Therefore, the crushing machine productivity must be as multi-objective programming model is an important objective function. PE jaw crusher, VSI impact crusher, vertical mill are useful.

Jaw crusher broken wall cavity shape is formed by rolling acetabular wall and work space. Cavity design is good or bad, on the economic and technical indicators crusher (productivity, energy consumption, broken particle size and grain shape and the broken wall and rolling wear of acetabular wall, etc.) have a significant impact. Therefore, the cavity-shaped performance as the jaw crusher to be multi-objective programming model is one important objective function. Quality based on a fixed principle, according to the broken machine performance parameters, can solve the ideal curve laminated crushing chamber shape, but because of the broken layer crushing chamber work states and crusher to the nip angle, the discharge opening and the crushing chamber height requirements and standards restrictions, the actual curve obtained laminated cavity-shaped crusher often only approximating the ideal curve-shaped laminated crushing chamber. Layer of the crushing chamber can be broken by the amount of material equivalent standard deviation as a measure of crusher cavity design of the pros and cons, so the crushing chamber through the broken layer equivalent material standard deviation as a measure of the amount of performance-shaped cavity of the objective function.

Crushing machine crushing grinding product size is an important economic and technical performance indicators, broken particle size will have a direct impact on the economic benefits to the user crusher, the crusher performance reflects the pros and cons. Broken machine users, to meet the productivity requirements of the crusher premise, are expecting better quality of fragmentation products, thus crushing the product size distribution as a jaw crusher to be multi-objective programming model is an important objective function. In production practice, generally use less than the crusher closed side of the nesting population broken broken products, the total percentage of products that calibration marker size as a measure of quality of technical indicators broken.

12-11-2011 om 02:39 geschreven door annazhao356  

Based on years' earlier encounters and technological know-how development, Hongxing jaw crusher sequence are of exclusive models, which often can complement most crushing needs in major and secondary crushing. The machines used are jaw crusher, impact crusher, ball mill, vibrating feeder, vibrating screen, belt conveyor etc..

Ore crusher comprise aluminum ore crusher and non-metallic ore crusher.Ore crusher and ore grinder mill used broadly in mining neighborhood additionally as other connected industries also. Ore crusher and ore grinder mill is broadly area into use in lots of of industrial fields, for example building, chemical, component fertilizer, metallurgy, mining, nonmetal, abrasive, bearing materials, ceramic, steel, thermal power, bricks & tiles, coal industry, etc. the conventional crushing or grinding elements are cement (raw food and cement clinker), shale, slag, coke, sodium feldspar, Syenite, limestone, graphite, fluorite,car amide, electrolytic manganese metal, ferromanganese, coal, gangue, zirconium, steatite, granite, orthoclase, marble, glass, etc.

Multi-cylinder hydraulic cone crusher adopts pc optimisation style and design to pace up major shaft speed. The extraordinary crushing chamber exchange program can quickly exchange elements in crushing chamber to complement exclusive size.

12-11-2011 om 02:38 geschreven door annazhao356  

Crushing/Broken, there are jaw crusher, cone crusher, VSI crusher, roll crusher, generally choose the hammer crusher, but the traditional hammer crusher, there are certain shortcomings, Hongxing's mechanical technology for pc1000 mountain x 800 hammer crusher, combined with the disadvantages of the use of it in the actual production condition, puts forward several opinions for the reform:

1) article screen frame and sieve reinforcement article. Article screen frame, the article sieve used after installation location wear-resistant overlaying welding electrode welding screen frame, strengthening article wear easily work face up to 5 mm height surfacing about screen, and will be fixed in the article on screen welding article, can prevent screen frame deformation, the article screen, have fixed protection scattered. This improvement can be greatly extended article screen frame and the use time of article sieve, reduce the material cost.

2) hammer crusher rotor static and dynamic balance test, install blow, this improved balance hammer hammer crusher is to solve the vibration of important ways. Will the hammer crusher base and its drive motor backed the basis of a whole, the concrete lining, in order to enhance its ant-vibration performance and avoid vibration damage, so as to ensure the hammer party based crusher performance.

3) 160 mm frame screen extended, can decorate 4 screen, increase root article hammer crusher work area, qualified products from the grain size in time, reduce a crushing cavity smash the produce, reduce the load of the hammer, facilitate production capacity.

4) the upper frame integral structure to structure, the structure profile fraction to overhaul the rotor is very convenient, will only part of the division of hoisted out can be left to move out of the rotor.

Transformation, must pay attention to cut the upper frame, add a pair of flange, welding stress, guarantee the machine remove requirements of assembly performance. Article R520 to screen a radian R510, make the screen and hammer the clearance between the article is reduced, facilitate at the same time frame, the adjustment of the article screen when hammer, screen after wearing a frame can be enough adjust position.

12-11-2011 om 02:38 geschreven door annazhao356  

Rubber conveyor belt as an important configuration, a direct impact on the production of conveyor performance, the current conveyors used more widely, different manufacturers may require different capacity, and different lengths, where the rubber conveyor from a crucial role. We also provide leather belt conveyor, waste material conveyor.

The use of rubber conveyor belt:

Rubber conveyor belt with elastic good, high strength, impact resistance, flex resistance is good, into a good groove, the use of elongation, suitable for long-distance, high load, high-speed conveying materials under the conditions. Rubber conveyor belts are widely used in coal, mining, port, metallurgy, electric power, chemical industry transportation of materials. Sought after by the majority of manufacturers

Rubber conveyor belt should pay attention to what we use it?

1, Once a conveyor belt deviation occurs, should take immediate measures to correct;

2, conveyor belt that local damage, the application of rayon and timely repair, so as not to expand;

3, to avoid the conveyor belt being rack, post or block material block to prevent the misfortune to scratch the rip;

4, to avoid the roller covered by material, resulting in rotation not working, to prevent leakage of material between the cards in the drum and the tape, pay attention to the lubrication of conveyor belt moving parts, but not oil belt;

5, the load starts to prevent the conveyor belt.

We manufacture matched machinery - jaw crusher, micro powder grinder, hammer crusher, impact crusher, bucket elevator.

12-11-2011 om 02:37 geschreven door annazhao356  

State-owned power utility Eskom’s current “worst-case scenario” for delivering initial power to the grid from the first Medupi power station unit, or Unit 6, was currently September 2013, Engineering News Online has learned.

The unit would be the first of six to begin producing at the R100-billion (R125-billion when interest during construction was included), 4 800 MW coal-fired plant, which was currently under construction near Lephalale, in the Limpopo province.

The scenario was premised on there being no material improvement in the delivery of the key boiler contract, which was being built and installed by Hitachi in association with local and international subcontractors. Together, the boilers for Medupi, as well as the Kusile power station, which is being built almost simultaneously in Mpumalanga, were valued at R38.5-billion and represent the largest single contract ever awarded by Eskom.

There had been a range of problems with the project, which moved ahead in 2006 despite the absence of a finalised design and a funding plan, as well as a serious dearth of internal project management capacity, which was augmented by PB Power.

Initial site preparation was delayed, which had a knock-on effect to the laying of the civil foundations by a joint venture led by Murray & Roberts (M&R). Progress has since been made in agreeing the precise scope of the works and additional advances had been paid to M&R in line with that new scope.

But the boiler portion remained a concern and Eskom currently had serious doubts about the ability of Hitachi and its subcontractors to deliver on the contracted 48-month delivery schedule for the first unit. We manufacture complete sets of mining equipment, jaw crusher, compact crusher, ball mill.

A source close to the development said that, in other parts of the world, Hitachi generally delivered such units in 62 months and that it was also currently about ten-and-a-half months behind on the Medupi delivery schedule.

The delays had arisen partly as a result of serious deviations, against the original design, on the steel fabrication portion of the contract, which had been let to M&R’s Genrec – between January and March more than 6 000 modifications had to be made.

But also, insufficient human resources had reportedly been mobilised for actual erection, which led to the appointment, in August, of Shanahan Engineering.

Site logistics were also described as appalling, which had further delayed erection, as had serious welding errors, which were currently being remedied by the appointment of yet more foreign welders, mainly from Thailand, as well as the introduction of an orbital welding machine.

The critical hydro-pressure test, which was scheduled for December 2011, would not take place this year. In fact, under the worst-case scenario, which was premised on the delivery performance to date, the pressure test would only take place in September 2012, which would result in first power in September 2013 and a ramp-up to full capacity over several months. Recent years, the machinery industry develops fastly, there are cone crusher, energy saving cone ball mill.

Eskom was meeting weekly with Hitachi and there were various scenarios under discussion to improve delivery by between 10% and 50%. Should a 10% improvement be achieved, first power would arise in June 2012. Should it improve by 20%, the date would be brought forward to May 2013 and a 50% improvement would result in first power by March 2013.

Hitachi Power Africa CEO Johannes Musel indicated recently that the first Medupi unit should be producing during the first half of 2013.

12-11-2011 om 02:36 geschreven door annazhao356  

Glanville is of the opinion that the after-tax value of Sangdong, after paying the 2% net smelter return royalty, is approximately US$300 million, within a reasonable range from US$200 million to US$400 million. This Valuation Opinion takes into account a 50% reduction from the calculated net present value, as the project Prefeasibility and Feasibility Studies are yet to be completed. Woulfe is on target to publish the Prefeasibility Study and the full Feasibility Study later this year.

In the method used for this valuation, annual cash flows are projected over the expected life of the project, and these cash flows are then discounted at an appropriate rate to arrive at a Net Present Value. A comprehensive in-house cash flow model has been prepared and reviewed by Glanville. That comprehensive model has been utilized by Glanville to generate cash flow projections based on a number of different input parameters and assumptions, some of which are different from those utilized by Woulfe (including a higher estimated capital cost). Some of the key input assumptions include a sales price of US$375 per metric tonne unit of WO3 (in ammonium paratungstate), a twenty-one year mine life at an annual mill-feed production rate of 1.2 million tonnes, an average grade of 0.41% WO3, and an after-tax constant-dollar discount rate of 8%.

Brian Wesson, CEO and President of Woulfe, commented, 'The Valuation Opinion is within the range we were expecting. We undertook this valuation to assist the Woulfe Board in evaluating potential transactions that may eventuate. With this document in hand, the Board will be in a better position to make decisions in the best interest of Woulfe shareholders.'

As the information provided in the Valuation Opinion does not contain an economic analysis which conforms with National Instrument 43-101, the economic viability of Sangdong will remain uncertain until completion of at least the Prefeasibility Study, which is expected in a couple of months.

As previously announced, the Company commissioned PricewaterhouseCoopers ('PwC') to undertake a valuation of Sangdong, and this valuation has been completed. However, due to the confidential nature of some of the information contained in the report by PwC, it will not be submitted to SEDAR. The conclusions of the PwC report are consistent with this Valuation Opinion.

Woulfe Mining Corp. is a TSX-V listed company with a diversified portfolio of mining licenses for tungsten, molybdenum, gold, base metals and uranium-vanadium in South Korea. In China, Henan Hongxing is titled as 'China Famous Machinery Brand', there are series of machines, jaw crusher, impact crusher, ball press, ball mill, Raymond mill, limestone jaw crusher.

The company is focused on the development of the Sangdong tungsten mine (one of the World's largest and most renowned tungsten mine's for 40 years) a property that we believe has substantial value for our shareholders. The outcome of the scoping study in March 2010 determined that the project NPV was US$467 million at a commodity price of $25,000 per tonne Ammonium Paratungstate (APT). Today, the APT price is over US$45,000 per tonne. Woulfe has accelerated the project due to the robust project and market. The company's target is to move to production at the end of 2012. In the last 18 months the company has focused on building the Sangdong tungsten mine team and reopening the mine. The project is well staffed with professionals and is moving forward rapidly.

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

12-11-2011 om 02:36 geschreven door annazhao356  

World No. 2 iron ore producer Rio Tinto cited a strategy by bigger rival Vale to divert European shipments to China for a dramatic softening in market prices. Because of the iron ore prices, it affects the jaw crusher markets.

Rio's iron ore division head and Australian chief executive Sam Walsh said a move by Vale to ship more to China had not caused Rio to curb its own iron ore production runs, which are running at full capacity.

'The softening in iron ore prices relates to Vale shipping material that was destined for Europe into China,' Walsh told a business forum in Perth on Tuesday.

Spot iron ore prices have shed 19 percent so far this month in a sell-off largely fueled by slower construction steel demand in China.

China is the world's biggest customer of imported iron ore, accounting for around 400 million tonnes annually.

In Europe, a more important market for Vale than Rio, steel markets have fallen under a cloud of doubt given its debt crisis.

Growth of Europe's steel production will slow in 2012 along with activity in the steel-using sectors, Eurofer, the European steel producers association has forecast.

Spot iron ore prices on Tuesday fell nearly 4 percent. It was the biggest single-day drop since August 2009 as thin demand from China forced some traders to sell at a loss.

'Traders who can't hold positions because they don't have sufficient funding are selling at a loss of $40-$45 a tonne,' said a Singapore-based iron ore trader.

Despite price falls, all three mega-producers including Rio are ramping up production. Many mining machinery prices such as ball mill, energy saving cone ball mill, impact crusher have changed greatly.

'My business is shipping flat out,' Walsh said. 'We are producing at record rates.'

Walsh downplayed the lasting effect of Vale's strategy.

'There's a limit to what they can physically ship,' Walsh later told Reuters on the side of the forum. 'We're not overly concerned about that.'

He said Rio remains confident in the long-term drivers of economic growth and iron ore demand in China.

In the short term, the market was worried about the European crisis, but it was not having a direct impact on Rio's operations, he said.

'The issue is contagion. It's perception, it's fears,' he said. 'When you look at the fundamentals of China, India, South Asia, North Asia, we find it's very robust.'

Vale, the largest of the three top producers, reluctantly discarded the once-a-year-price system in 2010 only after BHP Billiton and Rio bowed out, cognisant it would upset customers. In the end it had no choice but to follow suit.

Now, with spot prices trailing the last quarter's average price mark and lead times on Brazilian cargoes to China much longer than the Australian miners, Vale has announced it is open to alternative pricing systems.

Some analysts have interpreted this as paramount to Vale offering discounted iron ore to boost sales.

12-11-2011 om 02:35 geschreven door annazhao356  

Affected by the earthquake, Japan heavy industry market meet the great losses, which brings the challenge and chance for China machinery market. Japanese steelmakers JFE Holdings and Sumitomo Metal Industries said on Tuesday they would not cancel their currently more expensive long-term iron ore purchasing contracts for October-December despite a plunge in prices on the spot market. We are the professional manufacturer of mining machinery, crushing equipment, sand making equipment, sand washer, roll crusher, rod mill.

The comments came a week after Vale's chief executive said the Brazilian miner was open to discussing different iron ore pricing systems with clients, as a tumble in the price of ore has led to pressure from steel mills for more flexibility.

Weaker demand for steel in China, the world's biggest consumer and producer, has dragged down steel prices and slashed the appetite for iron ore, the key steelmaking raw material.

Some Asian steel giants have been pressuring suppliers as spot iron prices have slid to their lowest in a year and are set to post their biggest weekly decline in 15 months as demand from top importer China remains thin, fuelling expectations prices could drop further.

Asian mills, with margins cut by lower steel prices, are not that keen on paying around $170 a tonne for iron ore -- the fourth-quarter contract rate based on June-August average spot prices -- when the current rate is around $145.

Vale has told Chinese steelmakers it will give them options to buy the raw material cheaper, sources told Reuters this month, as spot prices for iron ore have dropped below the quarterly contract system created last year.

But Sumitomo Metal Industries, which is set to complete a merger with Nippon Steel, the world's No.4 steelmaker, in October 2012, has not yet received offers from miners to change iron ore contract prices for the October-December quarter, a company official told Reuters.

Grasp the chance to develop our mining machinery industry, expand our jaw crusher market, ball mill market and others.

12-11-2011 om 02:35 geschreven door annazhao356  

Cast iron in casting process is very common in the process of cast iron products. For its quality problem is be worthy of attention, so we must learn about the effects of several factors of cast iron pieces of ball mill. Of course, not for ball mill, we also provide the accessories of crushing plant, cement mill, impact crusher, jaw crusher etc.

The first is the process operation.Control and check the quality of the casting in the manufacturing production.

The second is to possess a reasonable casting process.

The third is the quality of raw materials in the casting. If the quality of the raw materials dose not match the standard, it will make the iron casting generate defects, which effects of appearing quality and internal quality or even make the cast iron scrap.

In recent years, wear-resistant casting industry has developed continuously with the development of our national economy. And it now has become an independent industry.

At present, due to the inevitable and objective wear problem in the development of the industry exists in reality. Therefore, as long as the basic raw material industry develops, the needs of casting wear-resistant parts will be also continuous in supply. What's more, as the ceaseless progress of industry and the requirements of energy saving and environmental protecting, the quantity and variety of the wear-resistant parts in demand will continue to expand. The wear-resistant castings industry will be more prosperous and have a stronger vitality. Therefore, we call the wear-resistant casting industry an' immortal industry'. Welding power source should be able to guarantee the long time continuous and stable work. The operation machine can realize automatic welding gun moving vertical and horizontal direction. The positioner can flip horizontal rotation and vertical. Dust removal system is capable purify the welding fume releasing by automatic welding gun.

12-11-2011 om 02:34 geschreven door annazhao356  

In the past practice of grinding technology, in the equipment making, people often only consider whether the basic working state o the equipment can meet the standard and output problem. With the requirement of energy saving and environmental production becomes more and more strict, the extensive production mode of original ball mill is not suitable for the high precision production need of present stage. Therefore, to achieve double bin classified grinding is necessary in the reforming of a ball mill, rod mill and other grinding mills.

Then, how does this kind of ball mill achieve energy saving? From the view of the discharge and the feeding of raw materials, raw materials does not directly enter the inside medium of cylinder through the hollow shaft neck of double chamber ball mill, so the ball mill will not begin the selecting work until the cylinder rotates at a speed around a horizontal axis.

The separation effects are mainly reflected in that bulk material fall into crushing chamber while smaller pieces of material fall into the grinding chamber through the conveying device. In this way, when their own gravity is larger than the centrifugal force, the materials will be disengaged from the inner wall of cylinder.

By the further optimizing the feedback device of the ball mill grinding chamber we can see that we can easily capture the necessary feedback information through the feedback device without further transformation of the situation, which play a supplementary role in the separating warehouse of the ball mill.

After the separating warehouse, the ball mill can be saving ball mill consumable, such as steel ball and lining board consumption.In addition, after the classified chamber the ball mill can play two different effect, one is crushing, the other is the grinding effect. It uses the inertial force of large equipment for crushing, which is the unique property of the classified chamber ball mill.

Comprehensive comparison, the classified chamber type ball mill can save power consumption than traditional ball mill about 40%-50%. Through the power distribution circuit of supercharging effect, the start consumption decrease 3-5 minutes than beforce. While the entire production and the grinding efficiency increased 35%-45%. There are also ultra-fine Raymond ball mill, energy saving ball mill.

12-11-2011 om 02:34 geschreven door annazhao356  

Ball mill is one of the essential part of mineral processing equipment. Many users of ball mill complains that the liner plate of a ball mill is with short service life and a high production costs. Henan Hongxing Mining Machinery summed up key factors influencing the liner wear of a ball mil based on years of production experience, which as a reference for the users of ball mill. Hope it can help the users avoid a similar situation in production and prolong the service life of ball mill liner plate. The key factors influencing the liner wear of a ball mill generally include the following several points:

1, The impact of media material

The generally used crushing media mateial include: various mine materials (manganese, copper, tungsten ore, chrome ore, etc.), various types of stone (limestone, granite, gneiss, basalt, gray rock, etc.) and industry coal used in power. The hardness of the media is the main basis that determines the liner plate wear, the higher hardness of the media, the shorter service life of the liner, on the contrary, if the media is with a lower hardness, the service life of the liner will be prolonged.

2, The impact of operating conditions

1) Eliminate defects not timely.

2) Adjusting undeservedly makes the ball mill running at a short positions.

3, The impact of liner material

The main parameters affecting the anti-wear effect is matching of the two index of hardness and impacting toughness of liner material. If the liner plate has a higher hardness, which means it has a good wear resistance, and the two factor basically is a proportional relationship. The impacting energy depends on the size of the diameter of steel ball and grinding tube.

4, the impact of the ball mill's designing and manufacturing and the installing quality.

The performance of the lining plate generally include the following two: one is to protect the cylinder; another is that the liner plate rotates at a specific speed to raise the ball to the required height to achieve the desired effect.

The quality of the liner plate is also direct factor affecting the normal operation of the mill.

Those above are the main factors affecting ball mill liners, we recommend that you should firstly consult the expert before you buy a ball mill. And you'd better go to the manufacturers with strength production and reputable brand purchase. You can contact us at any time for jaw crusher, ball press machine, untra fine jaw crusher.

12-11-2011 om 02:33 geschreven door annazhao356  

At present, there are various crushers: jaw crusher, cone crusher, hammer crusher, roll crusher, and the crushers can be classified into extrusion type, impact type, shear type according to the main crushing force.

Extrusion type crushing machine mainly comprises jaw crusher, rotary crusher, cone crusher, roll crusher and so on. Its working principle is: materials crushed by the extrusion, splitting and bending force between the crushing mechanism fixed tooth plate and the movable tooth plate. This kind of crusher mixedly crush materials in the crushing cavity, which is vulnerable to the formation of pulverization and easy to form the big shape product, which can't ensure product particle size and with a large power consumption. This kind of crusher is mainly used for crushing hard materials in metal, mining, gravel field and other industries.

Impact type crushing machine mainly comprises impact crusher, hammer crusher etc. This kind of crusher crush the coal by impacting with the hammer, after every impacting, the materials accelerating, then flying to the impact plate, shock, anti - shock, repeated by the same process, at the same time the materials after being hit mutually impact in the crushing cavity. This kind of crusher is difficult to control and which finally will lead to a mount of powder coal. It is worse to use this kind of method to crush the coal with higher fragility and lower hardness and it is strict with the size of the feeding. This kind of crusher is suitable for coarse and medium crushing materials.

The crushing process of the key process in the coal dressing process and is also the important means to improve the technical and economic index of the coal dressing plant. Various forms of broken equipment, because of their different crushing mechanism, has different applicable scope and use. Choose a suitable crushing equipment you should according to the material properties and operational requirements. Accordingly, it is that different forms of crushing machine, because of its crushing principle is different, have different scope of application.

As with different production condition, Henan Hongji provides different crusher. You can select the crusher according to different needs. We sincerely hope new and old customers come to visit our mill. If you have any requirements, don't hesitate to contact us.

12-11-2011 om 02:32 geschreven door annazhao356  

Steel slag, slag and fly ash are collectively referred to the three major industrial wastes. However, the utilization of steel slag is much lower than that of slag and fly ash. Steel slag is usually used for packing or for firing cement, overall the utilization is not high. Steel slag contains a certain number of major mineral in cement clinker, which after being crushed and milled by crusher or grinding machinery can be used for cement mixing materials and concrete admixtures. There are still most of the slag heap abandoned in China, which result in the waste of metal and slag resources. Therefore, the crushing and grinding of the steel slag is the vital link, the development technology of the crushing and grinding equipment will directly promote the recycling of slag resources.

As a professional manufacturer of mining machinery, Henan Hongxing constantly make efforts to develop and update crusher, grinding and screening equipment as well as the gradual replacement of tailings processing equipment. The mechanical equipment of Hongxing Group fully meet the environmental requirements, especially jaw crusher, impact crusher, cone crusher and other crushing equipment, which play a good role in recycling and re-utilization of tailings. In addition, the cone crusher use a hydraulic chamber clearing system which reduce the downtime. Various specifications of crusher have multi-crusher chamber type, so the customers can select the cavity depending on their requirements. Cone crusher take use of grease sealing system to avoid water supply and drainage system from blocking and also avoid blocking the oil-miscible and water deficiencies. The spring safety system is overload protecting device, which can protect the crushing chamber from damaging.

Crusher effectively help remove the contaminated coat of the tailings in a green way. Henan Hongxing Mining Machinery CO., LTD. is a high-tech R&D enterprise, which engages in manufacturing and selling mining mechanical equipments such as crushing machinery,grinding machinery,washing&drying machinery,screening&dressing machinery,etc. The production of our company have passed the authentication of of the international quality certification system ISO9001:2000.We always believe the spirit of developing as absolute principle, forge our brand with quality and promote the brand with service.

12-11-2011 om 02:31 geschreven door annazhao356  

In the process of the high speed road construction, the vast dinas raw materials are essentially required. That only relying on outsourcing can not fundamentally solve the problem of the need, so it is necessary to seek the self-made manner. Thus, the need for compound crusher to provide sufficient dinas raw materials for the high speed road construction. So compound crusher is essential, compound crusher is widely used for medium and fine crushing of the hard and high hard materials in many kinds of ores, cement and other industries. And the compound crusher has been widely used for crushing the mechanism construction sands and stones, and it has the higher efficiency and yeild.

Compound crusher has a greater crushing ratio, the size of the discharging materials can be adjusted arbitrarily without the effect of the plate hammer, liner wear, and without screen settings. It is not easy blocking when crushing materials with high water content, large amount of mud. The compound crusher uses the elastic regulating mechanism, entering unbroken material can be automatically discharged, which protect the crusher from damaging. The structure of the compound crusher rotor is unique, the rotor body is almost has no wear when crushing materials. The back chamber body is installed with a screw rod or a hydraulic opening mechanism, you can easily replace the wearing parts without using the main equipment.

Materials falls into the high-speed rotation impeller from the upper vertical combination crusher, at the function of the centrifugal force, the materials will be crushed by impacting with the other part materials by forming umbrella shunt. Materials are crushed after several the process. The process is the process of compound crusher crushing sand and stones aggregate for high-speed road processing, which proves that the compound crusher is a fundamental crushing equipment of high-speed road.

Our purpose is to promote the territory development through the development of highway using our crushers, ball mills, machines and at the same time promote local economic development. So the manufacturing high performance compound crusher is the historical mission of every crushing machinery manufacturer. And it is the struggling goal of us Hongxing day and night. Prepared for dedicating to the modernization for China.

12-11-2011 om 02:31 geschreven door annazhao356  

Crushers: jaw crusher, impact crusher, cone crusher, hammer crusher, roll crusher, mobile crushing station etc. Small crusher received a variety of energy's role in practice, the role of this energy include: the surrounding medium on the role of energy small crusher , the mission operators , repair personnel and the role of environmental conditions ; with small crusher operation and the agencies working on the internal energy , such as various loads , vibration, temperature, etc. ; in the manufacturing and assembly gathered in small crusher materials and components within the potential energy and so on.

The energy is mainly to small crusher mechanical energy , thermal energy , chemical energy in the form of existence. When the energy reaches a certain value , the process will lead to the emergence of harmful,causing small crusher parts of the initial performance and status changes. For example when it meet the negative a certain degree of power and speed of movement, the friction between the harmful process why results will lead to friction with the vice appear small crusher wear , so that small crusher with the movement of such changes.

With the development of harmful process,which make a small crusher parts injury at first. The specific performance of wear,deformation, cracks,fatigue , corrosion , damage to the emergence of small crusher parts of the structure parameters change,such as tolerance , geometric tolerances ,with the gap and other changes. Structural changes in the parameters has led to a small crusher function output parameters change in the parameters, such as small crusher output power and speed of change .

With the further expansion of the degree of injury , small crusher parts gradually exceeded the structural parameters of allowable values. If the small crusher parts exceed the allowed values of structural parameters , output parameters and functions do not exceed acceptable limits , it appeared that the small crusher potential failure , the corresponding abnormal state of the state .At this time,we should be adopted to eliminate maintenance ;If we used the small crusher a long time , the main components have reached the limits of structural parameters , output parameters and the system features go into serious overrun , with the economy decreased , this time the small crusher needs to overhaul or updated in a state of extreme technology .

12-11-2011 om 02:28 geschreven door annazhao356