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Copper and Molybdenum Flotation Process

2016-04-19 6:55:40   XinHai    Views (287)
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Copper and Molybdenum Flotation Process

Copper and molybdenum are accompanying minerals. Almost over 20 percent molybdenum is recovered from copper and molybdenum. Copper and molybdenum ore, which are mainly copper ore, is existed as porphyry copper with high recovery value and low grade of molybdenum (0.01~0.1%). Copper in copper and molybdenum is existed mainly as CuFeS2, Cu2S, while molybdenum is existed as MoS2. Copper and molybdenum include preferential flotation, part combined flotation and combined flotation.

Preferential flotation contains two processes: one is concentrate molybdenum first, while another is concentrate copper first. There are some shortcomings of preferential flotation: copper and molybdenum is hard to reactivated, flotation process is complex, flotation index is worse, and process cost is high. Copper and molybdenum flotation process is commonly used for copper and molybdenum ore with pretty high grade, while it’s rarely adopted in industrial production.

In part combined flotation process, molybdenum with high floatability will be concentrated first, and then copper and molybdenum combined concentrate are concentrated together. Copper and molybdenum will be separated at the last stage. Separation difficulty and process cost of copper and molybdenum is decreased in this process. This process is appropriate for the molybdenum of high grade.

Copper and molybdenum combined concentrate are recovered firstly in the combined flotation process. Copper and molybdenum will be separated in the following stage. This flotation process is low in cost, of less middling and easy to control and maintenance, which is proper for the copper and molybdenum ore with low grade. Combined flotation process is the most commonly used process. However, copper and molybdenum should be took off reagent before separate, for the redundant reagent is harmful to the copper and molybdenum separation.

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