Portable crusher classification

A self-propelled portable crusher has its own running gears, which work in the mining face, from the loading equipment (eg excavators) directly to the material, when the advance of mining work for the former, it is to move forward together with the loading equipment. Portable crusher set the frequency shift depends on the advance of loading equipment. As the crusher moves around, so you need to configure highly flexible belt system.

Divided by way of walking, portable crushers are divided into with fluid, track wheel, tire, track, move type. When we choose portable crushers, we must consider the functions like mining geological conditions, running gear under load, the frequency of walking, road gradient, location and exploitation of mining face and progress.

Stationary crusher itself can’t move on their own, with a special need for mobile devices - track truck or truck tires. Vehicles can travel to the crusher below the crusher with hydraulic unit from the top, and moved to new locations. This portable crusher equipment in the mining pit sits near the center of the mining face level. It can take several months to move a few years, with the mining face to maintain a certain distance and height difference.

The overall function of portable crushing plant handling the entire unit as a whole, their work can be relocated within 48h. Crusher will be moved into the unit to the feeding device, crusher and discharge devices Part 3, also removable into a smaller size and weight of moving components. Removing and reinstalling about 30d, each shift of not more than one set 3 ~ 5a. Semi-fixed crusher mounted on a steel platform, the program moved less than a set time interval, with the extension of open-pit mining, crushing machine will be set down repeatedly, until the end of open-pit mining.

The portable crushers unit composition: Portable crusher unit generally consists of three mutually independent components, namely, crusher, feeding device, unloading device, the system also includes maintenance, truck. Into three separate parts of the system, were relocated with the truck. Portable crushing plant equipment and general metal structural members only, there is no concrete and foundation engineering. Portable Crusher is the core equipment, the production capacity of its units play a decisive role. Used portable crusher jaw crusher has, cycle type, rotating jaw, hammer, back-and-roller and so on.

Select the crusher into account when mine production capacity, the nature of ore, size and other requirements of the product. Hard rock selection generally broken jaw crusher and crusher cycles; broken in the hard rock mining multi-cycle type, rotating jaw, jaw, and counterattack hammer type; broken with soft rock and more roll crusher. Cycle type and are usually used for rotating jaw crusher can move on, hammer, counter type, multi-roll crusher used on their own, and thus the production capacity is relatively small, limestone and coal used for other non-metallic mines.

Coal Mining and Preparation Standards

The earliest coal mining system

The earliest coal mining system used in England, from which U.S. practices evolved, was the long wall method. Mining could proceed from the shaft only a short distance because no forced ventilation was available. All the coal within this perimeter was removed prior to extending the shaft deeper or sinking a new one.

No coal preparation of consequence was performed at this time. The room and pillar method was used in underground mines in this country because of the nature of and easy accessibility of the coal beds. Strip mining was introduced during the second decade of this century, after the development of the steam shovel for the Panama Canal, and the long wall system was reintroduced on an experimental basis during the last 20 years. Auger mining was introduced with the spread of coal stripping, as a supporting method of recovering coal from underneath a highwall. SBM can supply you coal quarry crusher, coal quarry mill for sale .

Coal preparation equipment

Until World War II most coal was loaded by hand and was obtained from the better seams of coal. Each worker was responsible for rejecting impurities and (sometimes) fines in the mine. Outside preparation equipment consisted of screens, crushers, and picking tables. Washeries were not common.

Coal cleaning plants

Exhaustion of the best coals and adoption of mechanical mining, which eliminated the removal of impurities in the mine, required the wider use of cleaning plants incorporating screens, crushers, picking tables, and washers. These plants normally practiced hand picking for the lump and egg sizes (more than three inches) and washed the coarser coal (three inches by one quarter of an inch). The fine coal (less than one quarter of an inch) was usually shipped raw. The reject from such a plant was unlikely to exceed ten percent of the run-of-mine (ROM) coal.

“full seam” mining

Introduction of the continuous miner requiring “full seam” mining, elimination of a large portion of the domestic market, and further exhaustion of the best coals imposed further requirements on the coal preparation plants. They were required to clean and dry the fine coal, the state of development that is current today. Picking tables have been eliminated, a fine-coal circuit has been Last Revised: June 22, 1998 5 added, and rejection of 50 percent of the ROM coal is not uncommon.

Coal preparation plants

Fluctuations in coal demand resulted in the dismantling of plants, some of which were incorporated into other or new plants, always of larger capacities. The trend has been to utilize one large plant to process coal from several mines, even from different seams, at the expense of additional freight charges and intensified refuse disposal requirements. Some plants, modified and expanded several times, are still operating at the original site after 50 years, long after the original mine has been abandoned.

Artificial Sand Manufacturing Process

Artificial sand is widely used in road construction, concrete industry, etc. As the field of industry application gradually expanded, the gradual application of natural sand work more and failed to keep pace with the various sectors of modern world development needs. For the most part, artificial sand is produced to meet the great needs. More advanced sand making machines have been invented to push forward human civilization. Here you can learn more about definition of artificial sand application and artificial sand manufacturing process.

Artificial Sand Making Machine

As a professional manufacturer of sand making equipment, SBM also provide the most professional design of sand making palnt. Unitll mow, SBM have designed sand process for thousands of clients from more than 60 countries and serviced for field of sand making and sand shaping for more than ten years.

VSI5X Crusher becomes the core equipment in sand making business. It adopts Germanic advanced technique and owns a number of patents and independent intellectual property rights. VSI5x series VSI crusher is highly recommended to crush high hardness materials as iron ore, nonferrous metals, corundum, and bauxite, quartz sand, basalt, etc

Artificial Sand Making Plant

The raw material is transferred to jaw crusher for primary crushing by vibrating feeder, then the crushed materials whose size is larger than 40 mm are transferred to vsi crusher through belt conveyor for secondary crushing. The materials crushed will be transferred to the vibrating screen. The materials with suitable size will be transferred to vsi crusher, after being washed by sand washers, then clean final products will be discharged. The others with unsuitable size will be screened from vibrating screen, then will be transferred to the vsi crusher, this forms a closed circuit manifold cycles. Sizes of final products will be according to our customers' requirements. If it is the dry process, the classifier and deduster will be attached according to you requirement.

Metso C20 Jaw Crusher

C120 jaw crusher

The latest model of the C jaw crusher product range is the C120. The crusher is designed to be a perfect fit for stationary and for mobile plants. The development of the C series jaw crushers is based on key features: reliability, productivity and safety.
C120 jaw crusher is ideal for:

• Aggregate producers
• Medium and large scale contractors
• Mining companies

Main customer benefits of the C120:

• Maximized reliability for the greatest availability over the product life cycle
• New kinematics and cavity design to achieve outstanding productivity with the lowest possible cost per ton
• Easier and safer operation and maintenance to meet the latest requirements

Main features of the C120:
We believe that the combination of both premium quality components and materials and the latest Metso foundry know-how are the basics for the reliable operation of the C120 jaw crusher. A giant leap was taken for example in the bracket and damper design to ensure incredibly smooth operation and easy installations in totally new or replacement applications.
Based on our field experience it was important to create large feed opening, very aggressive cavity nip angle and extremely long stroke in the bottom of the cavity to achieve the highest possible capacity in this size class.
Huge improvement was also taken in safety when durable composite guards were implemented first time in this jaw crusher size class for easy and safe service and maintenance. Lots of focus was also put to limit the number of service points with easy access.

Gold ore crushing plant in South Africa

Rand aurideposit are famous for it is the largest gold producing area of the world. In South Africa, the gold are the top tree mineral for export and it do bring great much interests to South Africa economy. In South Africa, gold ore do attract a number of businessmen. No matter the scale is big or small, gold ore crushers are widely built in South Africa.

Though these years, the gold ore production cost increase a lot, and the gold market is not so bright with the decline of iron ore price. Many investors are still confident of the South Africa gold industry.

South Africa Gold Ore Crushers

Because many largest gold ore deposits are controlled, most investors’ gold ore crushing plant are small scale. The popular gold ore crushers are small jaw crusher, hammer crusher, ball mill and matched sand washing machines and vibrating screens.

Hammer crusher in South Africa

Double produces many hammer crusher models to satisfy different customers’ requirements. Our hammer traditional hammer crushers are produced according to some customers’ special requirements. Following are the advantages:
1.Simple structure and easy for maintenance
2.Small capacity and wide wide application: some customers may new in the crushing industry and just want to start one small capacity crushing plant, the hammer crusher fit for the customers very well.
3.Adjustable discharge opening size: the hammer crusher has its own grate at the bottom, it is easy for changing. Also, the final products size range is quite wide.
4.Good production sharp. Aggregates crushed by the hammer crusher are almost square, it is good for varies industries.

Double updated hammer crushers for new demand

But there are still some problems in satisfy many customers’ demands. So we update the hammer crusher at the beginning of 2011. Our new style hammer crushers make up shortage of the traditional ones.
1.The new style hammer crusher has big capacity and high crushing ratio. Sometimes, customers may need to produce very fine particles and big capacity,such as many customers may want to crush coal, glass, NPK Granules and some others to fine particles. The new style hammer crusher is competent to this task very well.
2. The rear frame can be opened for convenient maintenance
3. Separate bottom gate is convenient for adjust the discharge opening size

Ball mill for South Africa gold ore

These hammer crushers well satisfy small scale South Africa gold ore producers. Meanwhile, ball mill are very popular, too. It can easily ground the gold ore to small particles. At the bottom of ball mill, one wire mesh is installed, so it separates the qualified ones directly before discharging them from the machine. Actually, ball mills are widely used in sorts of South Africa mining ore beneficiation plants. Such as tin ore beneficiation plants, iron ore dressing plants, manganese ore processing plants, etc. It is really a high performance and price ratio mining processing equipments.
If you are one investor and plan to invest in South Africa gold ore industry, just be free to contact us; if you any problems about the South Africa gold ore crusher, 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.

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

South Africa coal processing equipments offered by SBM 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 plants 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.

Ludowici Screens and Feeders

SCREENS
Ludowici supply a full range of screen media and consumables to complement the world-class screen machines that they manufacture. Whether your requirements be for polyurethane, wedgewire, wire mesh or rubber, Ludowici are able to supply it.

FEATURES OF HORNET HEAVY DUTY BANANA SCREENS
• Capable of operation at up to 50% increased capacity over conventional horizontal screens.
• All major components are computer generated ensuring spare parts will fit with ease.
• High "G" force performance provides increased capacities and efficient desliming or media recovery.
• Deck cross-members are individually bottled for ease of replacement.
• Linear motion (straight-line) provided by the reliable Honert Exciter featuring the flexibility of in-situ stroke adjustment to the screen.
• Integral feed box and discharge lip form part of the screen deck.
• Suitable for modular wedge wire or polyurethane screen surfaces.
• Full continuous fillet welding and stress-relieving of all major component parts.
• Fully Huck-bolted on assembly
• Cross-members and drive beams are machined prior to assembly.
• Available in a wide range of sixes up to 14 ft. wide x 30 ft. long.
FEEDERS

PGM Vibrating Feeder 
Ludowici/Malco PGM Feeders are heavy-duty, high capacity vibrating feeders designed for use in arduous conditions such as primary materials handling applications. The PGM feeders are suitable for installations under large hoppers and can withstand head-loads and impact caused by large material lumps.
The feeder is driven by a twin-shaft, geared mechanism which delivers high "g" force and constant acceleration even under load, ensuring there is no capacity or throughput variation. A single, free-standing electric motor is connected to the mechanism either by a vee-belt drive arrangement or a cardan shaft.
Feeder installation is between horizontal to 10 degrees inclined and mounting is on heavy-duty steel coil springs.

Brute Force Feeder (BRU)
The Ludowici BRU Brute-Force Vibrating Feeders and Grizzly’s are your solution to troublesome primary crushing installations.
These machines are specifically designed to handle primary mineral streams containing maximum lump size of up to 1500 mm.
They are extremely robust and utilise heavy duty hard-faced liner panels, out of balance Exciter Mechanism drive units to ensure high ‘G’ force operation, and are installed on special heavy-duty rubber springs to minimize excessive movement caused by head-loads and impact.
The capacity range of these machines would be 500 – 4500 t/h.
Medium Duty Feeder (UF)
The Ludowici UF medium duty Vibrating Feeders are typically used to handle lighter minerals (coal, aggregate, sand, etc.) at feed rates ranging between 50 – 2500 t/h.
These feeders work best with relatively free-flowing and pre-sized (-250mm) material, delivering positive straight-line motion and consistency throughout due to high ‘G’ force operation.
The UF feeders are suitable for either floor mounting or cable suspension and come in sizes from 0.4m up to 3.3m wide and 0.75m to 5.0m in length.