Оборудование для добычи никелевой руды перерабатывающий завод
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- Поставщик: Jiangxi Walker Machinery Co. Ltd.Jiangxi Ltd.
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Описание и отзывы
Характеристики
Product Description
Nickel ore divides into copper sulfide and copper oxide
The most important nickel mineral is pentlandite, followed by pyrrhotite. Other important classes of ore are the laterites, Garnierite a nickel-magnesium silicate, is the richest in nickel, but nickeliferous limonite, constitutes a major portion of the laterites.
With nickel found in two radically different types of ore, it is not surprising that the mining methods differ. Sulfide deposits are usually mined by underground techniques in a manner similar to copper, although some deposits have been mined using open pits in the early stages. The mining of laterites is basically an earth-moving operation, with large shovels, draglines, or front-end loaders extracting the nickel-rich strata and discarding large boulders and waste material. The ore is loaded into trucks at the face, as would be the case in an open pit, and hauled to the smelter.
With nickel found in two radically different types of ore, it is not surprising that the mining methods differ. Sulfide deposits are usually mined by underground techniques in a manner similar to copper, although some deposits have been mined using open pits in the early stages. The mining of laterites is basically an earth-moving operation, with large shovels, draglines, or front-end loaders extracting the nickel-rich strata and discarding large boulders and waste material. The ore is loaded into trucks at the face, as would be the case in an open pit, and hauled to the smelter.
Extraction and refining
The extraction of nickel from ore follows much the same route as copper, and indeed, in a number of cases, similar processes and equipment are used. The major differences in equipment are the use of higher-temperature refractories and the increased cooling required to accommodate the higher operating temperatures in nickel production. The specific processes taken depend on whether the ore is a sulfide or a laterite. In the case of sulfides, the reaction of oxygen with iron and sulfur in the ore supplies a portion of the heat required for smelting. Oxide ores, on the other hand, do not produce the same reaction heats, making necessary the use of energy from other sources for smelting.
From sulfide ores
Sulfide ores are crushed and ground in order to liberate nickel minerals from the waste materials by selective flotation. In this process, the ore is mixed with special reagents and agitated by mechanical and pneumatic devices that produce air bubbles. As these rise through the mixture, the sulfide particles adhere to their surfaces and are collected as a concentrate containing 6 to 12 percent nickel. The waste material, or tailings, is frequently run through a second cleaning step before it is discarded. Because some nickel-bearing sulfides are magnetic, magnetic separators can be used in place of, or in conjunction with, flotation. In cases such as the Sudbury deposit, where the copper content of the ore is almost equal to that of nickel, the concentrate is subjected to a second selective flotation whereby the copper is floated to produce a low-nickel copper concentrate and a separate nickel concentrate, each to be processed in its respective smelting line.
Nickel flotation process is divided into several parts, such as crushing, grinding and flotation etc.It will be used jaw crusher, ball mill, spiral classifier, flotation machine, the mixing tank, thickener and other equipment.
From laterite ores
Being free of sulfur, laterite nickel deposits do not cause a pollution problem as do the sulfide ores. The range of process options is limited by the nature of the ore. Being oxides, laterites are not amenable to conventional concentration processes, so that large tonnages must be smelted. In addition, they contain large amounts of water (in the range of 35 to 40 percent) as moisture and chemically bound in the form of hydroxides. Drying of moisture and removal of the chemically bound water are therefore major operations. These are carried out in large rotary-kiln furnaces. Dryers 50 metres long and 5.5 metres in diameter are common, while reduction kilns 5 to 6 metres in diameter and more than 100 metres long are required to handle the large tonnages of ore and to provide the necessary retention time.
We have professional engineers team to draw flowchart based on customer's mine site details.
We supplied full set Nickel ore processing plant: hopper, vibrating screen, Shaking table, ball mill, Spiral classifier, magnetic sepatrator, flotation separator, slurry pump, belt conveyor, etc.
Other flowcharts
Successful cases
Packing & Delivery
●Ways Of Packing
1.Small parts packed in the wooden cases.
2.Big parts packed by plastic membrane.
3.The whole big machine is loaded in the container.
2.Big parts packed by plastic membrane.
3.The whole big machine is loaded in the container.
● Shiping by sea/air freight
or any way the customer requires.
Company Introduction
Jiangxi walker Machinery Co.,Ltd, are a professional manufacturer of complete set mining equipments, a sub-company of JXSC mine machinery factory in Jiangxi province.professional at providing complete set processing equipments for Gold ore /Tin ore /Tungsten ore /Iron ore / Diamond/ Coltan ore / Silica sand / Zircon sand/ Black sand/Chrome ore, ect. As well as complete set small lab mining machines.
Our core advantages as below:
1.+30years history factory at mining machinery
2.Provide engineer team after sale service
3.Provide complete set mineral processing plant
4.Provide sample testing service in factory lab for free
5.Provide professional ming soolution consulting
1.+30years history factory at mining machinery
2.Provide engineer team after sale service
3.Provide complete set mineral processing plant
4.Provide sample testing service in factory lab for free
5.Provide professional ming soolution consulting
1.Inquiry and consulting support. 2.Ore sample testing support. 3.View our Factory. 4.Design Flowchart. | 1.Training how to instal the machine, training how to use the machine. 2. 1 year warranty . 3.Engineers available to service machinery overseas. |
FAQ
●Pre-sales service: We provide you with the prophase plan, process flow design and manufacturer equipment according to your special demand.
●Sales service: Send technicians to the site to guide the installation and commissioning, train the operators, and complete the acceptance with you.
●After-sales service: To establish long term friendship, we will regularly pay return visit to customers. Supplying technique, building design, instruction, installation and debugging for free.
●Lifelong service: One year warranty to make sure your machine runs constantly.Always offer lifelong service and provide spare parts for a long term.
●How is the quality of your products?
Answer: Our products are manufactured strictly according to national and international standard, and we will take a test on every grinder before delivery.
●How about the Guaranteed?
Answer: All of our products are guaranteed for one year. If products quality is not consistent with the description as we
described or the promise before you place order, we promise 100% refund.
●How about price?
Answer: For the complete same machine, we can promise our quality is the best when the price same as other competitors, and our price can be lowest when the quality at standard level.
●How about the service and payment terms?
Answer: We can accept T/T or other payment ways you request; 30% deposit, 70% balance before delivery, which is international trade practice; Finished product pictures will provide to customers before delivery.
●Sales service: Send technicians to the site to guide the installation and commissioning, train the operators, and complete the acceptance with you.
●After-sales service: To establish long term friendship, we will regularly pay return visit to customers. Supplying technique, building design, instruction, installation and debugging for free.
●Lifelong service: One year warranty to make sure your machine runs constantly.Always offer lifelong service and provide spare parts for a long term.
●How is the quality of your products?
Answer: Our products are manufactured strictly according to national and international standard, and we will take a test on every grinder before delivery.
●How about the Guaranteed?
Answer: All of our products are guaranteed for one year. If products quality is not consistent with the description as we
described or the promise before you place order, we promise 100% refund.
●How about price?
Answer: For the complete same machine, we can promise our quality is the best when the price same as other competitors, and our price can be lowest when the quality at standard level.
●How about the service and payment terms?
Answer: We can accept T/T or other payment ways you request; 30% deposit, 70% balance before delivery, which is international trade practice; Finished product pictures will provide to customers before delivery.
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