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Copper beneficiation equipment

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Copper beneficiation process

Communition (Crushing and Grinding) represents over 50% of the total mineral processing cost. There has been a development towards Autogenous Grinding, which is the grinding of ore by itself rather by special metallic or non-metallic grinding bodies distinct from the ore. Various foreign companies have resorted to Dynamic Heavy Media Separation which is the most efficient pre-concentration process. The other developments have taken place in the field of Better Instrumentation and Improved Crusher Control & Grinding Circuits.


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Tremendous upgradation has taken place in the technology for classification operations by replacement of conventional rake and bowl classifiers with hydroclones, which offer a number of advantages such as effective classification and separation of fines, low consumption of spa re parts, small size equipment and adaptability to automatic controls of the grinding circuit.


In the concentration process, large floatation cells (27 cu.m) are being increasingly used abroad. The technological impact of the giant cells lies in the reduction of the operating and maintenance costs. A new system, called Column Flotation Cell was developed in Canada and is now used in majority of the plants abroad. Its principal characteristic is that the column has no moving parts and solids are kept in suspension by rising bubbles alone and concentrate produced is of higher parity. These cells are also useful in the recovery of Molybdenum.