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The selection of copper ore beneficiation equipment is mainly based on the beneficiation process. The process flow can be basically divided into: Pre-selection stage, Separation stage and Concentration and dehydration stage. However, in actual mineral processing plants, the mineral processing process needs to be determined according to the properties of the ore.
The pre-selection stage of copper ore mainly includes crushing and screening, grinding and classification. In the crushing stage, a crusher is generally used for multi-stage crushing. The minerals are crushed to 7-8 inches and then completed with a screening machine. The grinding and classification stage is to send the screened qualified materials to the wet ball mill for grinding. After grinding to a certain particle size, it is classified through the cyclone.
Commonly used mineral processing equipment at this stage are: Jaw crusher, circular vibrating screen, wet grid ball mill, and hydrocyclone.
When processing disseminated copper ore, one stage of crushing (the mineral is crushed to 7-8 inches) and one stage of grinding are often used. Mine (grinding fineness is -200 mesh accounting for 50~70%) operation, 1 roughing, 2~3 times of fine selection, 1~2 times of sweeping process. When the particle size of disseminated copper ore is fine, a staged grinding-flotation process can be used.
Commonly used equipment for beneficiation of disseminated copper ores include: Grid ball mill, spiral classifier, xcf flotation machine, kyf flotation machine, concentrator, etc.
When processing bornite, it is often used The process is coarse concentrate regrinding - in the grinding process of the beneficiation stage, a period of coarse grinding, rough selection and scavenging are first carried out, and then the coarse concentrate is ground again and beneficiated to obtain high-quality copper concentrate. ore and sulfur concentrate. The main mineral processing equipment includes wet overflow ball mill, hydrocyclone, SF type flotation machine, JJF type flotation machine, BF flotation machine, high-efficiency stirring tank, etc.
Dense copper ore is generally composed of dense symbiosis of chalcopyrite and pyrite, of which pyrite The ore is often activated by secondary copper minerals, resulting in a higher pyrite content. To obtain copper concentrate and sulfur concentrate at the same time, a two-stage grinding (or stage grinding) + flotation process can be used.
Notes on selecting copper ore flotation equipment: Generally, flotation machines of the same specification are used for roughing and scavenging processes, and finer selection operations often use smaller specifications than roughing. Small equipment.
Copper concentrate dehydration equipment generally uses a cyclone + filter press or concentrator to dewater the copper concentrate. It is concentrated and dehydrated until the water content is less than 25%, and then sent to the smelting plant to obtain copper metal.
Commonly used copper ore concentration and dehydration equipment include: concentrator, hydrocyclone, filter press, filter, etc.
In addition to the above-mentioned main copper ore beneficiation equipment, there are other auxiliary equipment, including: feeders, belt conveyors, mixing tanks, slurry pumps, valves, etc. In actual beneficiation plants, the selection of copper ore beneficiation equipment should be based on the size of the beneficiation plant and the requirements of the beneficiation process, and cannot be applied blindly.
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