Method for comprehensive treatment of non-ferrous metal tailings

Abstract

The invention discloses a method for comprehensive treatment of non-ferrous metal tailings. The method includes a step (1) of tailing size mixing and impurity removal, a step (2) of tailing recleaningroughing, a step (3) of rough concentrate regrinding, a step (4) of rough concentrate selection for yielding concentrate products, a step (5) of secondary tailing coarse fraction dehydration, a step(6) of secondary tailing fine fraction dehydration and cake making and a step (7) of dehydration and cake making. Two processes are involved: (1) non-metallic old tailings and new tailings are subjected to recleaning (flotation and reselection and the like), residual target minerals and other valuable mineral concentrate products in the tailings are selected and yielded, and the comprehensive utilization rate of resources is improved; (2) comprehensive treatment on secondary tailings is performed, the coarse fraction tailings are converted into building materials or used as agricultural land reconstruction and construction engineering filling materials, fine fraction dehydration is performed to yield mud cakes used as agricultural land reconstruction or construction engineering filling materials, to fundamentally eliminate the environmental hazards of mine tailings and the occupation of land resources.

Description

technical field [0001] The invention relates to the technical field of tailings treatment, in particular to a method for comprehensive treatment of tailings in nonferrous metal mines. Background technique [0002] There are many kinds of mineral resources in my country, and large and small deposits are spread all over the country. Non-ferrous metals refer to metal elements such as copper, lead, and zinc. The market size demand of the product will be further expanded. However, with the continuous and large-scale development and utilization of mineral resources, the amount of mine tailings produced will inevitably increase day by day. The inherent secondary geological hidden dangers of mine tailings, particle dust hazards, free metal pollution, and agricultural land occupation damage, etc. Problems will also become increasingly prominent. [0003] Therefore, how to solve mineral resource development and mine tailings hazards is an urgent problem for those skilled in the art. ...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a comprehensive treatment method for tailings in non-ferrous metal mines, which solves the problems of re-selection and recovery of valuable minerals in tailings, potential safety hazards, environmental pollution, land occupation, etc. "Zero emission" completely eliminates and eradicates the hazards and hidden dangers of mine tailings, and transforms high-polluting industries into environmentally-friendly industries

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