Backwater utilizing method for ore-dressing of polymetallic ore

Abstract

The technical scheme of the invention provides a backwater utilizing method for ore-dressing of a polymetallic ore, which comprises the following steps: selecting mixed concentrate of polymetallic ore orderly by adopting step-by-step mixed flotation; and performing separating flotation on the mixed concentrate to obtain the concentrate of a single ore. Intermediate products, concentrate and tailings generated by the mixed flotation of the polymetallic ore are subjected to dehydration; and the generated backwater is returned to a flotation operation used for a single metal ore. The backwater utilizing method of the technical scheme of the invention is suitable for the ore-dressing process of the polymetallic ore, particularly for the ore-dressing process of the polymetallic ore which is capable of obtaining a single metal ore by the step-by-step flotation. The backwater utilizing method for the ore-dressing of the polymetallic ore can improve an ore-dressing index to the maximum and ensures qualified products, meets relative policies of environment protection and pollution prevention of the State Environmental Protection Administration while enabling an enterprise to acquire good economic benefits, so the method has very practical significance for the development of a mine of which the ore properties are complex.

Description

technical field [0001] The invention relates to a method for utilizing backwater of ore dressing, in particular to a method for utilizing backwater of polymetallic ore dressing. Background technique [0002] According to the National Environmental Protection Agency Huanfa (2005) No. 109 document, "Mine Ecological Environmental Protection and Pollution Prevention and Control Technology Policy" in the development of mineral resources should implement "equal attention to pollution prevention and ecological environmental protection, ecological environmental protection and ecological construction As well as the guidelines of prevention first, combination of prevention and control, process control, and comprehensive management, it is required that the water reuse rate of the new, expanded, and reconstructed non-ferrous metal system beneficiation should reach more than 75%. [0003] It is very difficult for the polymetallic beneficiation process to achieve 75% of the return water u...

AI Technical Summary

Problems solved by technology

The metal that should be inhibited is activated into other metal products, resulting in the loss of the metal

[0005] 2. The product is unqualified

The activated metal enters into other products, resulting in the mutual inclusion in the product will exceed the relevant national product standards, and in serious cases, no qualified concentrate will be produced

[0006] For the heavy metal wastewater produced by the mineral processing plant, the method of treating the total tailings is currently used. The wastewater of the total tailings often contains a variety of mineral processing agents.

In terms of research, there are two types of treatment methods: simple chemical methods and physical chemical methods. However, to be widely used in industry, it must be technically mature, easy to operate and economically feasible. Currently, various methods have limitations. Moreover, due to the complex composition of wastewater, the treatment cost will be greatly increased

Therefore, most ore concentrators adopt simple methods of natural precipitation in tailings ponds and sun exposure, and then return to the process for use. As a result, the metal recovery rate is low, resulting in metal loss and waste of resources. In severe cases, qualified products cannot be produced.

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