crushing process of sulfide ore ironbeneficiation com

extraction of iron, process of iron, iron processing, iron mining

1.Large raw iron ore for primary crushing are fed into the jaw crusher by Plate feeder and are reduced to 8 inches or smaller. After first crushing, the material will transferred to cone crusher by belt conveyor for secondary crushing; the crushed iron ore stone will then transferred to vibrating screen for classifying. After classifying, the parts whose size below the mesh size will be transferred away as final products, while the other parts will return to cone crusher, thus forming a closed circuit. Size of final products can be combined and graded according to your specific requirement.

3.This iron ore slurry is pumped to the agitation tank. This iron ore slurry is finally pumped to the flotation machine with the fine sulfide ore (~-0.074 mm) going to froth flotation cells for recovery of iron.

4.In magnetite processing plant,the process of flotation separation is replaced by magnetic separation. The minerals are conveyed to the permanent magnetic dewatering tank for concentrate and then concentrate will enter permanent magnetic drum for a second magnetic separation. The concentrate after filtration and drying are conveyed to warehouse for storage.

Major iron ore beneficiation equipments are including:jaw crusher, cone crusher, vibrating screen,ball mill,spiral classfier,hydrocyclone,flotation machine,magnetic separatior,efficient thickener,press filter,slurry pump,feeder, agitation tank and belt conveyor etc.

Xinhai Mining Machinery Company supplies a wide range of solution for mineral process, including gold,silver,copper,iron,zinc,chrome,molybdenum,feldspar, manganese ore and more other ore materials.We could provide advanced mineral processing technique,benefication plant design, equipment production and installation instructions,and also could provide turnkey project!

introduction of copper ore dressing process - xinhai

Copper ore usually refers to mineral aggregate in the nature that can be used to extract metal copper, generally copper sulfide and copper oxide. Copper minerals in nature mainly include pyrite, chalcopyrite, tetrahedrite, chalcocite, azurite, malachite, etc. Chalcopyrite is the main mining copper ore, followed by bornite and chalcocite.

Current copper ore dressing process includes following stages: firstly, crush the raw ore to a certain size with crushing and grinding equipment, then useful minerals realize full monomer dissociation; Secondly, use certain copper ore dressing process and copper processing equipment to isolate useful minerals according to ore properties. There are various kinds of copper ores with complex ore properties in the nature, and most copper minerals have good flotability, therefore flotation process is common process used in copper ore dressing. Besides, wet-process copper extraction process is also an effective way to process copper ores.

Xinhai usually use crushing equipment to crush copper ore to a certain particle size, which meets the requirements of feeding size in grinding stage. The common crushing stage includes three stage crushing with single closed circuit stage, which is divided into coarse crushing, secondary crushing, fine crushing and screening. Screening stage can ensure the particle size of crushing products. Coarse crushing equipment usually includes gyratory crusher, jaw crusher; secondary crushing equipment usually has jaw crusher and cone crusher, and fine crushing equipment commonly uses cone crusher. Screening equipment often adopts circular vibrating screen or linear vibrating screen. Of course there are some differences in the actual crushing process according to different ore properties.

Grinding is the further crushing process of the ore, which makes the useful minerals fully realize monomer separation and prepares for the subsequent separation. The main ore grinding process is two stage grinding process. a grinding stage often use grid type ball mill because of large processing capacity and coarser ore particle size, and second grinding has higher requirement for the particle size, so it is often processed in overflow type ball mill. In order to control the final grinding particle size, mill products are sent to spiral classifier or hydrocyclone for classifying, then fine products enter to the next operation, coarse products return to ball mill for regrinding. Sometimes, middling is required to further grinding in the separation process, which is usually carried on in small overflow ball mill.

The common copper ore dressing processes are divided into flotation process and wet-process copper extraction process. According to mineral separation sequence, flotation process can be divided into differential floatation, bulk flotation, flotability ranking flotation, part-selective flotation, etc. According to flotation reagents, flotation process can be divided into direct floatation, sulfuration flotation. Wet-process copper extraction process can be divided into acid leaching, amine leaching, microbiological leaching, etc. here are brief introductions as follows.

Direct flotation process can be used for the separation and purification of copper sulphide ore and oxide copper ore, and sulfur atom in copper sulphide ore is the excellent solid-affinitive atom of xanthate collectors, which makes xanthate collectors can be absorbed on ore surface easily and increases its hydrophobicity, then float copper ore with flotation bubble. Direct flotation process is widely applied in the early copper ore flotation process, it is suitable for simple ore that is composed of gangues. It is featured with high recovery rate, poor selectivity, and is now gradually replaced by sulfide flotation process. The agents used in oxidized copper direct flotation have fatty acid, amine collector, chelating agent, thiol and other sulfur compounds. The flotation of oxide copper has higher requirements for gangue mineral types, which restricts the choice of collector.

Sulfide flotation process is suitable for the separation of copper oxide. Copper oxide has poor flotability, which can be separated and purified by adding vulcanizing agent to make sulfur ions adsorb on the ore surface, then using xanthate collectors to achieve separation. Sulfide flotation process can be divided into direct sulfide process and hydrothermal sulfide flotation process. Direct sulfide flotation process means add sodium sulfide, sodium bisulfide, sulfuretted hydrogen, or calcium sulfide to fine-grained copper ore, then use xanthate and aerofloat collector to recycle sulfur minerals. Hydrothermal sulfide flotation process means add sulphur to the pulp under the conditions of 180 and 0.6 ~ 1.0 Mpa, then oxide copper reacts with sulfur and generates sulfide scale for later collector adsorption. Sulfide flotation has advantages of not being restricted by gangue ore type, wide source of collector and low price.

There are many kinds of wet-process copper extraction processes. According to the leaching way, they can be divided into underground leaching, heap leaching, and agitation leaching, biological leaching. According to the leaching reagents, they can be divided into acid leaching, amine leaching and microbiological leaching. Acid leaching commonly uses dilute sulphuric acid as leaching agent, which can leach acid gangue-contained malachite, cuprite, tenorite, etc., this process is generally applied in low grade copper ore or copper mine tailings. Amine leaching is suitable for copper oxide ore with calcium-magnesium carbonate gangues, the leaching agents commonly use amine or amine salt, which is suitable for leaching raw ore, concentrate, middlings and tailings. The advantage of this process is leaching agent can be recycled. Microbiological leaching is a kind of sulphide copper leaching process. It mainly uses oxidative dissolution of some sulfur bacteria to sulfide, then recover copper element from leaching liquor.

The above is only brief introductions to copper ore dressing processes. In practice, ore properties are very complex, and copper ore dressing processes are diverse. Flotation is generally conducted in all kinds of flotation cells and flotation columns, leaching process can be carried on in the leaching tank, or leaching liquid can be sprayed on copper ore directly, such as underground leaching, heap leaching, microbiological leaching. Xinhai is equipped with rich experience in copper ore beneficiation more than20 years. If you want to know more about copper ore dressing processes equipment, please contact us right now!

henan mining machinery and equipment manufacturer - crushing process of sulfide ore

... impurities to make it usable. the first step in separating the copper from a sulfide ore is called crushing. ... process of copper ore fdm jaw crusher ...Chalcopyrite mineral processing production line-Jiangsu Zhongbo ... Chalcopyrite basic operations flotation process, brass ore broken through crush ...

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nickel ore crushing process

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2019/07/20 Nickel Ore Process, Nickel Ore Mining Equipment - Xinhai Copper- Nickel Ore Flotation Process When process copper-sulfide nickel ore, collector and frother will be used in order to better results. A basic principle of copper-sulfide nickel ore process is that it is better to let copper assimilate into nickel ore rather than the ...

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Case There is a large plant of copper-sulfide nickel ore in Ji Lin provice, China. Xinhai providing perfect beneficiation process of three-stage one close crushing, stage grinding, mixing-separating flotation, three stages dehydration ...

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multi-scale impact crushing characteristics of polymetallic sulphide ores - sciencedirect

The effects of crushing energy, ore hardness and particle size of cassiterite polymetallic sulphide ore and leadzinc polymetallic sulphide ore on the crushing characteristics during impact crushing were investigated by mineral liberation analyzer (MLA) and drop weight test. The results show that both ores contain pyrrhotite, sphalerite, jamesonite, gangue mica and quartz except cassiterite. Cassiterite is closely associated with sulphide and quartz to form aggregates, which are mixed with each other in the form of intergrowth or symbiotic disseminated fine grains. Cassiterite has a significant impact on ore crushing characteristics. Ore hardness is negatively correlated with the product of crushing parameters of A and b, i.e. Ab, the effect of crushing energy on crushing fineness is related to crushing parameters A and b, and the influence degree increases with the increase of A. The influence degree increases with the increase of b when crushing energy ECS is less than 1 kWh/t, and the influence degree decreases with the increase of b when crushing energy ECS is greater than 1 kWh/t. The impact of crushing energy on crushing fineness is greater than that of ore particle size when the crushing energy is lower; on the contrary, the impact of ore particle size on crushing fineness is greater than that of crushing energy when crushing energy is higher.

Foundation item: Projects (51874105, 51674064, 51734005) supported by the National Natural Science Foundation of China; Project (2018GXNSFAA281204) supported by the Guangxi Natural Science Foundation, China