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Beneficiation method for recovering low-grade zinc oxide ore from lead-zinc ore flotation tailings

A technology for flotation tailings and zinc oxide ore, which is applied in flotation, solid separation, etc., can solve the problem of large mud content in lead-zinc ore flotation tailings, low concentrate grade and recovery rate, and sticky foam that is difficult to eliminate Bubble and other problems, to achieve the effect of ensuring enterprise benefits and resource utilization, good sorting effect, and low production cost

Inactive Publication Date: 2016-07-27
CHINA UNIV OF MINING & TECH
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  • Abstract
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  • Application Information

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

Method used

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  • Beneficiation method for recovering low-grade zinc oxide ore from lead-zinc ore flotation tailings
  • Beneficiation method for recovering low-grade zinc oxide ore from lead-zinc ore flotation tailings

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Embodiment

[0030] Example: such as figure 1 Shown, a kind of beneficiation method that reclaims low-grade zinc oxide ore from lead-zinc ore flotation tailings, comprises the following steps and condition:

[0031] (1) Desliming: Take the flotation tailings of a lead-zinc mine in Xinjiang as the raw ore, containing 1.26% Zn, of which the oxidation rate of zinc is 75%, and the fineness is -0.074mm79.82%, adding 1250g of sodium carbonate as an adjusting agent / t, stirring, after pulping, enter the desliming hopper for desliming, and the desliming yield is 10%;

[0032] (2) Flotation: First, add 3400g / t of sodium sulfide as a vulcanizing agent, 400g / t of water glass as inhibitor and 10g / t of ether amine as collector to the ore pulp treated in step (1), stir, and then enter Crude I cyclone-static micro-bubble flotation column for the first rough separation to obtain crude I tailings and crude I concentrate, adding 300g / t of sulfide sodium sulfide and 10g of collector ether amine to the crude...

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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 mineral processing method for zinc oxide ore, in particular to a mineral processing method for recovering low-grade zinc oxide ore from flotation tailings of lead-zinc ore. 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 nonferrous metals. The sulfide minerals in lead-zinc ore are easy to be enriched by conventional beneficiation methods, but the grade of zinc oxide ore is low and the beneficiation index is not ideal, so that the lead-zinc ore is piled up and discarded in the tailings pond after the sulfide minerals are recovered by flotation, resulting in A large amount of zinc oxide metal is lost from the flotation tailings of lead-zinc mines. If the flotation tailings of lead-zinc ore can be recycled, it will not only help to improve the comprehensive utilization rate of resources and incr...

Claims

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Application Information

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IPC IPC(8): B03D1/00
CPCB03D1/00
Inventor 廖寅飞马子龙曹亦俊靳晨曦何棒
Owner CHINA UNIV OF MINING & TECH
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