There is copper oxide and copper sulfide for copper ore with main beneficiation method of floatation separation to gain the ideal beneficiation efficiency. However, many copper mines are not profitable to enrich by floatation separation. And other treatment has to be taken into consideration before floatation separation. Here is some preconcentration method for some low grade copper ore.
Copper sulfide is in intergrowth tight together with pyrite, so the pyrite will be enriched together with copper to realize the highest recovery rate. However, the pyrite is usually in coarse inlay, and its density is very big, so gravity separation can be used to get the pyrite concentrate with copper inside, and here the gravity separation becomes the best method as the preconcentration way for low copper ore.
Gravity separation makes use of density difference between useful material and the gangue. For pyrite of coarse inlay with big density difference, gravity separation is an ideal method as kind of preconcnetration way for copper ore with its small plant investment, low production cost and high efficiency. And gravity separation can work well for most of copper sulfide ore. The raw low grade copper ore went for the copper jig gravity separator, and the concentrate from gravity separation can go for floatation separation to gain great beneficiation efficiency, and it makes the ore of no profit to start practical to beneficiate. This is the core meanings for the gravity separation.
The combination of gravity separation and floatation separation lowers the plant investment and the floatation cost to improve the beneficiation efficiency making the low grade copper ore worthwhile to exploit. Gravity separation as the preconcentration for copper ore plays an important role in copper processing line and it is the main method of copper preconcentration.
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