Method for utilizing return water of separation flotation for copper and molybdenum bulk concentrates

Abstract

The invention discloses a method for utilizing return water of separation flotation for copper and molybdenum bulk concentrates. The method includes that overflow water of a copper concentrate thickener used during separation for the copper and molybdenum bulk concentrates is used as pulp regulating water for copper and molybdenum bulk concentrates after reagents in the copper and molybdenum bulk concentrates are removed, and is fed into a copper and molybdenum separation flotation process; copper concentrates acquired after copper is separated from molybdenum are fed into the thickener to be thickened, the overflow water is fed into a pulp storage tank, and is fed into a copper and molybdenum bulk concentrate pulp regulating tank by sand pump, pulp is regulated by the overflow water and copper and molybdenum bulk concentrate filter cakes, and obtained pulp is used as crude ore for copper and molybdenum separation flotation and is fed into a copper and molybdenum separation process. The return water generated during copper and molybdenum separation can be effectively utilized by the method, discharge of mineral processing wastewater can be reduced, and the copper and molybdenum separation return water can be treated. Compared with other methods for treating copper and molybdenum separation return water, the method has the advantages of simple technological processes, convenience in operation, stability in processes and the like.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and relates to a method for utilizing copper-molybdenum mixed concentrate separation flotation return water. Background technique [0002] In the separation and flotation process of copper-molybdenum mixed concentrate, in order to achieve effective separation of copper and molybdenum, it is necessary to add collector kerosene, dispersant water glass and a large amount of inhibitor sodium hydrosulfide. These flotation agents and their decomposition products, metal ions dissolved in minerals, and suspensions formed by fine mineral particles will remain in the flotation return water. Direct discharge not only causes the loss of unused flotation reagents in the process, but also pollutes the local environment with harmful substances in the backwater. Therefore, the return water should be used to the maximum extent without affecting the selection index, and at the same time, the remaining ...

AI Technical Summary

Problems solved by technology

The direct treatment process is complicated, the operation is difficult for workers, and the cost of mineral processing is increased

The return water from copper and molybdenum separation directly enters the tailings pond and mixes with the mixed flotation tailings water to increase the amount of tailings water, and the tailings pond cannot withstand the degradation products of free sulfhydryl ions, mainly sulfur-containing salts, which continue to be oxidized into SO 4 = The acid produced needs to be fully mixed with the mixed flotation tailings water and can be returned to the mixed flotation process after natural precipitation. Direct discharge will not only bring storage pressure to the tailings pond, pollute the environment and cause metal loss; separation of copper and molybdenum mixed concentrates Adding a large amount of inhibitor sodium hydrosulfide and directly returning to the copper-molybdenum mixed flotation process will have a certain inhibitory effect on copper minerals and affect the mixed flotation index

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