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.

Calcium Carbonate Grinding Plant

Calcium carbonate application

Calcium carbonate is a kind of inorganic compounds, lime rock (abbreviation limestone) and calcite's main ingredient.

According to the calcium carbonate production method is different, can be divided into carbonate heavy calcium carbonate, light calcium carbonate, etc. Heavy calcium carbonate (known as fly powder) it is to use mechanical method (using raymond grinding mill or other high-pressure grinding machine) direct crushing natural calcite, limestone, such as chalk, shells can be made.

Calcium carbonate powder process line

Calcium carbonate powder plays an important role in many industries from agriculture to light and heavy industries, so the calcium carbonate powder process line grinding mill plant is necessary.

Calcium carbonate crushing & grinding equipment

Crushing equipment is necessary to get calcium carbonate. As a professional mining equipment manufacturer, SBM can supply primary crusher, secondary crusher and tertiary crusher for you.

The crushing equipment is: ball mill,SCM ultrafine mill, etc. We also supply portable crusher and mobile crusher for calcium carbonate process line. Our crushing equipment also is used to crush the limestone, marble stone, dolomite rock, coke, graphite,etc.

Garnet Ore Crusher

Garnet Introduction

Garnet is found in Africa, Brazil, Canada, India, Madagascar, Sri Lanka, and the USA (Arizona, Colorado, Georgia, Idaho, New Hampshire, New Mexico, North Carolina, Pennsylvania, Utah, and Virginia). In the United States, only a few companies in three states (Idaho, New York, and Montana) produce garnet for industrial use. There are many significant garnet-producing countries. Noteworthy among them are Australia, China, and India, all of which export significant amounts of garnet. Russia and Turkey also produce large amounts of industrial garnet, but they are not yet exporting much of this material.

Garnet Crushers

As the garnet’s application in industry you should use our garnet crusher and garnet grinding mill. When you get the primary stone of garnet, it is always in different types of big block, so the garnet need to be crushed, sieved and graded into various sizes and thus coated abrasives of various fineness are prepared. In the process you may be use the garnet jaw crusher, garnet impact crusher, garnet cone crusher, vsi garnet crusher, mobile garnet crusher, trapezium garnet grinding mills, garnet ultrafine grinding mill, garnet ball mill grinder etc.

Talvivaara's primary crushing capacity boosted by crusher cavity optimization

Talvivaara mine, located in Northern Finland, is today the biggest sulfide nickel ore mine in Europe. In close cooperation with Metso, and with crusher cavity optimization, Talvivaara recently boosted its primary crushing capacity annually by up to 3.5 million tons.
An open pit nickel deposit with 0.22% average content, Talvivaara is a mine of many superlatives. Today, about 22 million tons of nickel ore is excavated at the mine annually. Using bioheapleaching, the mine currently produces 30,000 tons of metallic nickel per year.
After huge, up to 300,000-ton blasts, the feed material is dumped into the primary gyratory crusher and then transported along a more than two kilometer long conveyor to the secondary and tertiary crushing stages. After activating the ore, bioheapleaching of the ≤8-mm ore takes place in four piles, each 400 x 1200 meters in size. The natural bacteria are used to extract the nickel out of the ore.
A challenge caused by slippery ore
The nickel ore in Talvivaara is hidden inside black schist, which is extremely slippery material to crush. Already the first crushing test indicated that normal capacities would not be easily achievable.
After installing the huge 60 x 89 inch primary gyratory crusher, it immediately became apparent that the capacity would fall far behind the planned capacities. For the total mine economy, this presented a real challenge.
"Our main problem was caused by the profile of the original crusher wear mantle. Its cavity was not the right one for processing slippery ore, and it caused the feed material to jump up from the cavity, thus decreasing the capacity," explains Erkki Kärkkäinen, Manager of Materials Handling at Talvivaara mine.

“Throughout the entire development process, our cooperation has been very open and honest.”
Jyrki Lahenius, Department Engineer, ore processing at Talvivaara

Cavity optimized through cooperation with Metso
In order to quickly find a solution to the primary crusher cavity issue, Talvivaara contacted Metso's crusher wear parts specialists at the Tampere office in Finland. The task presented was to find a cavity that can better process the slippery ore and guarantee the capacities required for the mine economy.
"Actually, we studied all of our crushing-related parameters with Metso in order to find the right solution. Throughout the entire development process, our cooperation has been very open and honest," recalls Jyrki Lahenius, Department Engineer, ore processing, at Talvivaara.
After several meetings, using Metso's crusher cavity optimization process know-how, including 3D mantle design tools, the right angle for the mantle cavity was found, and the suitable manganese type selected. Metso's Tampere foundry casted the huge, two-piece wear mantles in the spring of 2010.
A 15% capacity increase can make a difference

Bioheapleaching extracts the nickel ore from the ore, resulting in a bright green liquid, several million liters of which is pumped daily during the leaching process.

In May of 2010, the Metso mantles and outer wear parts were installed into the primary gyratory. After crushing for 8 months, the results are quite positive. The primary crushing capacity has increased by an average of 15%.
Given as a percentage, the increase sounds quite modest. However, when calculating the annual capacity increase, Erkki Kärkkäinen ends up with a figure of 3.5 million tons of extra capacity.
In terms of hourly capacities, the primary gyratory’s original capacity during test drive was under 3,000 tons, and, after installing the Metso wear parts, it is about 3,500 tons per hour.
"I believe that with more efficient feeding, we can achieve a continuous production that exceeds 3,000 tons per hour. We currently feed the crusher using big Hitachi dump trucks, dumping 150 tons of ore into the crusher every 2.5 minutes," says Kärkkäinen.

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.

200TPH chrome ore crushing plant in South Africa

South Africa mineral resources are very rich, it take 50% mineral resources of Africa countries in amount and the mineral resources is the fifth one of the world. Especially, the platinum metals, the chrome, gold, andalusite, vanadiumore resources are the first one of the world. South Africa is Chrome oxide and there is only one compary (the MMC) have electrolysis Chrome production line. So a large amount of Chrome ore is mainly used for export. While, the quality of South Africa Chrome ore is very good, the Chrome content by weight is about 50%. Great many South Africa Chrome ore crusher are installed here for its advantages.

Chrome Ore Crusher for Sale in South Africa

At the beginning of 2011, one customer from America made one inquiry and would like to invest in building one 200TPH Chrome ore crushing plant in South Africa. Communicated with him and his partner, we have a general idea of their demands and we shared our opinion with them according to their budget.

Finally we got an agreement of one design and they placed an order after visiting Double Company and Double factory. In this Chrome ore crushing plant, one unit vibrating feeder, one unit jaw crusher and two units cone crushers and two units vibrating screen are used.

Chrome ore processing equipment

The whole crushing process begins from dumping the raw ore to steel hopper above the vibrating feeder, which ensure steady feeding process. Double vibrating feeder structure is very simple and we strengthen the wear parts, increasing the service life greatly. To the jaw crusher, we adopt heavy movable jaw and optimized connect methods, in this way, the hard mining ores can be crushed easily.

Obviously, jaw crushers are just primary crushers, they can crush big lumps to small lumps, but the products output size is still bigger than customers’ requirements. So when material discharged from the bottom of the jaw crusher, they are transported to one transfer station by belt conveyors. Under the transfer station, there are two units electric vibrating feeders, they feed the crushed lumps to belt conveyor steadily.

Then the lumps will be fed to the cone crusher. Double has two series cone crusher for sale in South Africa, one is HP series hydraulic cone crusher and another one is S series cone crusher. Here considering the budget, we suggest customer using two set S series cone crushers. By using this type cone crusher, customers can crusher mining ore aggregates to small particles easily.

For example, mining ore lumps can be crushed to 0~5mm, 5~10mm, 10~20mm or 0~1/8”, 1/8”~1/4”, 1/4”~1/2”, 1/2”~3/4” and 3/4”~1”. These size ranges well satisfy the world’s customers’ commonly requirements. Particles outputted from cone crushers are mixed with each other, to separate the different sizes particles, Double vibrating screens are necessary. The wire meshes are changeable, so producers just need to change the wire mesh if they need produce different size products. Finally, the qualified ones are conveyed to the store pile sites and oversize ones are transported to the cone crushers for crushing again.

chrome ore crushing plant

Simple illustration is just like this, now all the equipments have been shipped to South Africa already and it may started to run in the next year. This chrome ore crushing plant in South Africa will help more and more customers know Double products.

If you are interested in mining ore crushing plant, if you want to utilize mining ore crusher well, just be free to contact us. You can chat with our engineer on-line, this way, you will get answer immediately; you can also leave your email address, we will answer you within 24 hour

Beneficiation process of magnetite ore

Iron ore being the essential raw-material for iron & steel industry, its mining arguably is the cynosure of all mining activities undertaken by any country.

About 87% magnetite ore deposits occur in Southern Sector, especially in Karnataka. Of these, hematite is considered to be superior because of its high grade. Indian deposits of hematite belong to the Precambrian Iron Ore Series and the ore is within banded iron ore formations occurring as massive, laminated, friable and also in powdery form.

Magnetite ore beneficiation process

Iron ore beneficiation processes and other mineral processing operations with magnetite in the ore require accurate mass flow measurements to properly balance the grinding and separation circuits as well as to determine the true throughput impact of circuit changes. Determination of the mass flow requires an accurate measurement of the volumetric flow rate and the specific gravity of the slurry.

Magnetic separation and flotation

Magnetic separation and flotation are the most widely accepted technologies for upgrading fine iron ore particles, but both processes result in iron concentrates with high amounts of very fine and/or interlocked silica particles. Gravity separation is a common process used in iron industry, but the separation efficiency becomes unacceptable with finely disseminated materials (<45 microns).

Batch flotation studies were carried out to select either direct or reverse flotation technique to optimize reagent combination and to establish the number of stages of operations. Denver D-12 sub-aeration flotation machine was used for the batch flotation studies.