Mining Equipment Blog

Tuesday, December 13, 2011

Mobile asphalt plant

The mobile crusher asphalt equipment in a single process unit thus eliminating process heat loss due to material transportation. The asphalt minerals also benefit from the conducted heat from the drum shell thus effecting further savings.

mobile-asphalt-plant-300x225

Features of mobile asphalt mining equipment

1. Modern Wet Mix Macadam Technology.
2. Produces High Quality Mix.
3. Portable or Stationary.
4. High Production Rate.
5. Easy to Operate.
6. Highly Accurate Aggregate & Additives Feeder.
7. Manufactured as per MORTH Specification.
8. All components used in the plant are of top quality, with ISI Certification wherever available.
9. All moving parts and electrical parts of wet mix plant are provided with safety covers.
10. Ease of Lubrication and dismantling has been built into the design for efficient maintenance and repair.
12. Manufacturing is done with advance, internationally recognized techniques.

Mobile asphalt mixing machine

This kind of mobile asphalt mixing plants and equipments is widely used for producing asphalts, known as a type of industrial materials that do play an essential role in nowadays construction and maintenance work of asphalt roads.

We are always working to provide you with latest technology and world class standard mobile asphalt mixing machine. our asphalt mixing plants & equipments has been acclaimed worldwide. Totally dedicated to full customer satisfaction we strive for the best in terms of sales and service.

Thursday, December 8, 2011

Nordberg HP4 and HP5 Cone Crushers from Metso

The Nordberg HP5 follows the successful HP4 as the second model of an all-new range of high-performance cone crushers, benefiting from the

very latest in Metso crushing technology. Its heavy duty design derives from our 70+ years of experience with the Symons cone crusher, known worldwide for its rugged construction and application versatility. Labor-saving features such as hydraulic setting adjustment, tramp release and cavity clearing recall the innovative Nordberg Omnicone and first generation of Nordberg HP crushers. The HP4 and HP5 achieve new heights with unique features that produce the highest reduction ratios, ease of operation and low maintenance requirements.
Highest performance
The HP4 and HP5 cone crusher enable you to produce much finer products with fewer crushing stages, thereby lowering costs and saving energy. With a combination of optimized speed and large throw, HP4 and HP5 provide the highest reduction ratios of any current cone crusher. Due to their highly efficient crushing action, the HP4 and HP5 have high power utilization per cone diameter. As a result, you save twice with lower energy costs per ton of crushed end product and with lower recirculation load.

Higher cavity density improves crushing action for end products with more consistent gradation and superior shape. The new crushers maintain the proven threaded rotating bowl design. Comparative tests show equalized wear and more consistent setting around the entire circumference of the crushing chamber. Also the use of a newly designed tramp release system, with fixed return point, ensures that the crusher setting is maintained even after passing a piece of tramp iron.

Less downtime
Another way the crushers deliver is less downtime and increased operator confidence. Dual-acting hydraulic tramp release cylinders let the HP4 and HP5 pass tramp iron that would stall, or damage, many other crushers. If the jaw crushers does stop under load, the dual-acting cylinders provide a large clearing stroke, independent of liner wear, to quickly clear the crushing cavity.

An advanced fastening system for the mantle and bowl liner makes backing material unnecessary, and makes liner changes faster. When liners are changed or the crusher is reconfigured, the same hydraulic motors that rotate the bowl for setting adjustment will rotate the bowl completely out of the adjustment ring threads, greatly simplifying liner replacement. A new fixed counterweight guard protects the counterweight and seals out dust.
Easy to maintain
Bronze bushings used throughout provide superior load capability in the dusty, high-shock crushing environment. They cost less than rolling element bearings and are easy to replace in the field with normal tools. The HP4 and HP5 are easy to disassemble. All components are accessible from the top or side. The bowl and head are easily removed with no interference fit.

Versatility
Due to their strength, speed range and ease of converting from coarse to extra fine applications, the HP4 and HP5 provide superior application flexibility.

  • Save stockpile space by re-crushing excess or slow moving products without an intermediate crushing stage.
  • Converting from coarse to extra fine application and back again just by changing liners and rpm.
  • Liner and rpm combinations go from secondary applications to sand manufacturing.

Asset Protection
The new tramp release design also protects the main frame by smoothing out the impact forces and returning the bowl to its original position after passing tramp iron. Inside, a new fixed guard protects counterweight and seals out dust. An optional cover around the crusher protects employees from casual contact with adjustment and tramp release mechanisms. It also helps protect the workplace with reduced dust emissions. The environment benefits too from the advanced fastening system for mantle and bowl liner that do not require backing material.

Why Nordberg HP4 and HP5 Cone Crushers?

  • Highest performance
  • Less downtime
  • Easy to maintain
  • Versatility

Tuesday, December 6, 2011

Coal processing equipments in South Africa

South Africa is not only rich in metal mining, but also rich in the nonmetal mining resources. For example, the coal reserve is the seventh of the world. Now South Africa is one the chief coal production countries, it is the fourth largest exporting country of coal and it is also the leader production country of liquid fuel made of coal. So coal crusher for sale in South Africa has big market. With more investors focus on the South Africa coal industry, Double has won more and more gaze from these investors.

Coal-processing-equipments-in-South-Africa[1]

Coal Processing Equipment
South Africa coal processing equipments offered by Double are mainly jaw crusher, impact crusher, hammer crusher, ball mill and LM series grinding mills and feeder, screens and belt conveyors, etc. Many producers produce coal aggregates, the coal crushing plants are able to satisfy their requirements. Many producers produce coal powders or process coal ash; in this case, the coal grinding machineries are very important.
Coal crusher plants

The commonly process of coal crusher plant in South Africa are similar with each other. Jaw crushers crush big coal lumps to small ones when they dig out from well or from deposits. It is really a easy work for Double jaw crusher. Actually, Double jaw crushers can be used to crush numerous mining ores and different stones, such as granite, marble, basalt, gravels, limestone, gypsum, clay, manganese ore, chrome ore, iron ore, gold ore, copper ore and zinc ore and so on. As to the impact crushers, if the raw coal size is not very big, they can crush the lumps to small particles directly; if the raw coal size is big, impact crushers are used behind the jaw crushers. Though the application of impact crushers is wide, but impact crushers should used in crushing soft materials. If the coal deposit is small and producers just want to build one small coal production line in South Africa, Double hammer crushers are really good choices. Also, the output size of hammer crusher is quite small and adjustable, no other better machines are better than them in this function.

Coal grinding process

In the coal grinding process, ball mill and LM series grinding mills  are widely used. It is well-known that many factors must be cared when producers grind coal powders, for example the inflammability. Double LM series grinding mill and ball mill well solve these problems. And they are really high performance and price ratio products.

Till now, Double has many coal crushers and coal grinding mills used in South Africa. Though the scales are not very large, they do make many more South Africa people know Double. And we do believe our service and our products will help us enlarge our market in South Africa in the near future.

If you are one investor and plan to invest in South Africa coal industry, just be free to contact us; if you any problems about the coal crushing plants just be free to contact us. You can chat with our engineer on-line, the answer will be shown you immediately; you could also leave your email address with us, we will get in touch with you within 24 hours.

 

Gypsum Processing Equipments In Mauritania

Sunday, December 4, 2011

Steel structure mining processing plants

Tanzania is rich is many kinds of mining resources, such as the gold resources, coal resources, iron ore resources and limestone and so on. These rich mineral resources attract a number of investors invest in Tanzania and build many Tanzania mining ore crushing plants every year.

Steel-structure-mining-processing-plants-[1]

Double has helped many customers build plenty of mining ore processing plants in Tanzania, for example, we help customers build mobile crushing plants, fix mining ore crushing plants on cement foundation and crushing plants on steel structure, which greatly help customers save time to build the foundation.

The advantages of Steel structure machine

Steel structure foundation belongs to movable crushing plants, but it is not as flexible as the mobile crushing plants. Compared with the cement foundation, it has many advantages.

With the development of modern mining industry, many customers would like to save the cost of investment and the time to build foundation. To satisfy these customers’ requirements, Double R&D team spend a lot of time to design the steel structure that fit for Double mining ore processing equipments, such as Double mining ore jaw crusher, Double mining ore cone crusher, Double mining ore impact crusher and Double vibrating feeders, vibrating screens, etc.

By using these steel structure mining processing plants, producers just need to build simple foundation, it do greatly save the time to transport materials to build cement foundations. Supposing building cement foundation will spend three months, using the steel structure mining ore processing plants will save at least one month. Meanwhile, good cement foundations do cost a lot of money, greatly increase the invest cost. So by using steel structure, investors can get return earlier.

Steel structure mining processing plants

On the other hand, many mining working sites environments are very bad; producers have to spend a lot of time to making working sites, they use excavators dig the mountain to make suitable platform. It does bring a lot of troubles to investors. But if producers adopt Double steel structure, these problems are easy to be solved.

Meanwhile, the steel structure can be disassembled. Once one mining deposits work out, producers can disassemble the plants and transport to another deposits easily. And they can run the new mining ore crushing plants quickly.

Comparing with Double mobile crusher plant, the flexible of steel structures have many limits. But it is really good choice for many customers. And it is cheaper than the mobile crushing plants.

Tanzania mining ore crushing industry

If you plan to invest in Tanzania mining ore crushing industry, if you are interested in the steel structure crushing plants, just be free to contact us.

Chat with our engineers on-line, you can get answers immediately; leave your email address or your phone number, we will get in touch with you within 24 hours. We would like to help you solve your problems with you together.

Tanzania Mining Crushing Plant

Tanzania mineral resources are abundant; there are eight greenstone belts. Million tons of gold are fond in the history. Now the mainly proven mineral reserves are as followings:
Diamond reserve is about 2.5 million tons (content 6.5 carats/tons); gold reserve is around 800000 tons, there are 324 million tons of coals, 130 million tons iron ore, 10 million tons of phosphate, etc. Most of the mineral resources are not yet mined beside gold. It does be good chance for investors to build mining ore crushing plants in Tanzania.

Tanzania-Mining-Crushing-Plant[1]

Tanzania Mining Distribution

In Uluguru province, rhabdophane and titano-magnetite ore are fond in Wipu and Kisaki of Morogoro Mountain. The reserves of titano-magnetite in Kisaki is estimated of 20million~40 million tons, the grade is quite appreciable. Also gem, graphite and quartzite are found in Kisaki
The mining deposits in northwest zone of Iringa province are about 50 meters in thickness, along the TAZARA Railway. So it is really a good invest environments.
A lot of coal mines are fond in Liganga. And one 400MW heat power station are promised to built here. It bring great demands of coal. So investors can benefit from the problem greatly if they could build coal crushing plants here.
The famous copper mines locate in Kigugwe. Here the copper content is about 1.5% and latest data shows that it may reach to 4.0%.

Tanzania Mining Crushing Plant

Double is one professional mining crushing equipments and mining ore powder grinding mills manufacturer in China. Our mining ore processing equipments are very popular in Tanzania, For example, Double PE series jaw crusher, impact crusher, vibrating screens, vibrating feeders and cone crushers, MTM series grinding mills, MTW series grinding mills, ball mill, hammer mill and some other matched equipments are very hot.
Till now, we help customers build many mining ore crushing plant in Tanzania, such as coal crushing plants, copper ore crushing plants, iron ore crushing plants and quartzite crusher plants, etc. Now many of the mining ore crushing plants in Tanzania have been started to run. Some are still in building. Once all of the crushing plants are running, many more investors that invest in Tanzania mining industry will know Double better.

Tanzania mining crushing industry

If you are also interested in Tanzania mining crushing industry, if you have any questions about building one crushing plants in Tanzania, do not hesitate to contact us. We would like to help you solve your problems with you together.
Chat with our engineers on-line, you can get answers immediately; leave your email address or your phone number, we will get in touch with you within 24 hours.

Friday, December 2, 2011

Crusher plant production and maintenance

The production line of crusher plant mainly consists of Vibrating Feeder, Jaw Crusher, Impact Crusher, Vibrating Screen, Belt Conveyor, Electric Control Box, etc. Double equipment design different production lines ranging 50 t/h to 500 t/h by combining different models of equipments also matching Cone Crusher, Bag Dust Catcher, etc. to satisfy different customers’ technological requirements.

Crusher-plant-production[1]

Crusher plant maintenance

Convenient maintenance is so important in the quarrying crusher plant industry. Maintenance can be defined as working on something to keep it in a functioning and safe state and preserving it from failure or decline. Maintenance activities at quarries range from the maintenance of machines, equipment and vehicles to the keeping of roadways on site in good order, attending to such matters as providing edge protection and securing excavations.

It’s important to keep structural costs down, to design for ease of maintenance and operation, and to combine best practices with advances in fabrication and erection.

Best installation for crusher plant

In mining operations, the layout of crushing plants and ancillary equipment and structures is a crucial factor in meeting production requirements while keeping capital and operational costs to a minimum.Since the crushing plant’s structure and enclosure can represent the largest single cost element in a primary crushing plant, it is imperative to optimize these structural and construction costs to suit the life of the operation.

The fundamental goal for the design of a crushing plant is an installation that meets the required production requirements, operates at competitive cost, complies with today’s tough environmental regulations, and can be built at a reasonable price despite the rising costs of equipment, energy and construction labor.

Tuesday, November 29, 2011

Nickel beneficiation process

nickel-ore-processing-plant-300x225Nickel ore is primarily divided into sulfide copper-nickel mine and nickel oxide ore, whose ore dressing and processing techniques are entirely various.

beneficiation Procedure nickel oxide ore presently utilized crushing and screening processes to pre-remove bulk rocks with weak degree of weathering and low nickel ore.In quarry nickel the nickel within the nickel oxide ore frequently scattered in gangue minerals within the type of isomorphism and their grain sizes are extremely fine, nickel oxide ore can’t be enriched by mechanical dressing techniques. On the contrary, they should be only sent for direct smelting.

Nickel ore process

Nickel Ore Mining procedure in South Africa Nickel Ore Mining consists of preparation for mining and extracting of nickel extract. Consists of the activities of separating and sorting the nickel ore until it becomes guli (shots) within the type of ferro nickel and also the use of nickel which can’t be separated administratively from the mining of the nickle.

Within the both nickel ore beneficiation procedure of sulfide copper-nickel mine and nickel oxide ore, nickel ore crushing and grinding are needed. Cs series cone crusher is widely utilized for nickel ore crushing. You will find regular cone crusher and brief head cone crusher. Both them have been utilized as nickel ore crusher. Following crushed by cone crusher, the supplies should be grinded by rod mill and ball mill prior to becoming sent to flotation. Vibrating screen is utilized to separate various sizes of nickel ore. The screening mining equipment is also essential for nickel ore crushing and grinding mill..

Nickel extraction and purification

Main nickel is produced from two extremely various ores, lateritic and sulfidic. Most sulfide ores are processed by utilizing pyrometallurgical methods to create a matte for further refining.

Throughout nickel processing, nickel is extracted from its ores by conventional roasting and reduction processes. Nickel ore is stockpiled in the nickel plant. It’s firstly fed into a SAG mill feed bin, then convoyed to SAG mill for main grinding. The grinded supplies pass to regular cone crusher after which brief head cone crusher for further grinding. The crushed particles are passed to a vibrating screen for separation. Fine particles move to fine ore bin, whilst big particles return to cone crusher for regrinding. The fine nickel ores move from fine ore bin to rod mill after which to ball mill whilst adding xuanthate and lime.

The nickel grinding procedure yields usually a metal of higher than 75% purity, that is needed for nickel liberation. The nickel ore particles that are fine sufficient following grinding will pass to flotation procedure for magnetic separation and refining.