Mineral processing method for recovering low-grade zinc oxide ore from flotation tailings of lead-zinc ore

Abstract

The invention discloses a beneficiation method for recovering low-grade zinc oxide ore from lead-zinc ore flotation tailings and belongs to beneficiation methods for zinc oxide ore. The method includes the steps that the lead-zinc ore flotation tailings are used as raw ore, and desliming is carried out after a regulator is added and stirred for pulp conditioning; and a vulcanizing agent, an inhibitor and a collecting agent are added into ore pulp obtained after desliming and stirred for pulp conditioning, the zinc oxide ore is recovered through a flotation column, and after two times of closed roughing flotation and two times of closed cleaner flotation, zinc oxide concentrate is obtained. According to the method, the agent selectivity is improved firstly, so that the problems that bubbles are sticky and hard to remove are solved; then the sorting effect of equipment on micro-fine particles is improved, so that the concentrate grade and the recovery rate are increased; and finally the technological process is simplified, production cost is lowered, and enterprise benefits and the resource utilization rate are guaranteed. The method has the advantages that the sorting effect is good, the technological process is short, production cost is low, and the method is friendly to environment; efficient sorting of the low-grade zinc oxide ore in the lead-zinc ore flotation tailings is achieved, the comprehensive utilization rate of mineral resources is increased, and high economic and social benefits are achieved.

Description

Technical field [0001] The invention relates to a method for beneficiating zinc oxide ore, in particular to a method for recovering low-grade zinc oxide ore from lead-zinc ore flotation tailings. Background technique [0002] Zinc is an important strategic mineral resource in my country, accounting for more than 30% of the total production and consumption of ten commonly used non-ferrous metals. The sulfide minerals in lead-zinc ore are relatively easy to be enriched by conventional beneficiation methods. However, the low level of zinc oxide ore and unsatisfactory beneficiation indicators make lead-zinc ore piled up in the tailings pond after sulfide mineral flotation recovery. A large amount of zinc oxide metal is lost from the flotation tailings of lead-zinc ore. If lead-zinc ore flotation tailings can be recycled, it will not only help improve the comprehensive utilization rate of resources and increase the economic benefits of enterprises, but also help environmental protect...

AI Technical Summary

Problems solved by technology

[0003] The flotation tailings of lead-zinc ore usually have large mud content, low-grade zinc oxide ore, fine particle size, serious surface pollution, and poor floatability. Its mineral processing is a recognized problem at home and abroad.

The medicament, equipment and process adopted in the prior art have the following deficiencies: one is that the selectivity of the medicament is poor, and the foam is sticky and difficult to defoam; ; The third is that the process is longer and the cost of mineral processing is higher

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