Flotation method for sulfidization-oxidization mixed lead-zinc ore

A lead-zinc ore and flotation technology, which is applied in flotation, solid separation, grain processing, etc., can solve the problems of large consumption of mineral dressing reagents, complex composition, and low recovery rate of lead and zinc, so as to improve recovery rate and concentrate quality , reduce flotation equipment and energy consumption, and improve flotation efficiency

Inactive Publication Date: 2005-12-07
黎东明
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Problems solved by technology

[0002] my country's lead-zinc ore resources are abundant, but most of them belong to the sulfidation-oxidation mixed lead-zinc ore type, which has the characteristics of high lead-zinc oxidation rate and complex composition. The conventional flotation method is used to produce lead concentrate and zinc concentrate. Problems such as low recovery rate, large consumption of beneficiation agents, and poor economic benefits

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  • Flotation method for sulfidization-oxidization mixed lead-zinc ore

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Embodiment 1

[0011] Using a lead-zinc mine in Yunnan that contains Pb4.11% and Zn4.65% in the raw ore, the oxidation rate of lead-zinc minerals is 34%. The pH is controlled at a pH greater than 11.5, and the pH of the flotation system is controlled at a pH greater than 11; with ethyl dithiazide (amount of 40g / t) and phenylhydroxamic acid (amount of 20g / t) as collectors, flotation can Obtain lead concentrate, its grade Pb is 55%, recovery rate is 80%; Zinc concentrate grade Zn is 48% (sphalerite concentrate); Recovery rate is 85%.

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Abstract

The invention relates to a floating method of sulfide-oxide mixing Pb-Zn mine. The lead floating method adopts the flow process of one fast separation, one roughing separation, one sweeping separation and three classifications so that the mine grouting acidity of the full floating process can keep at pHú¥11. The zinc floating method adopts the flow process of one fast separation, one roughing separation, one sweeping separation and two classifications so that the mine grouting acidity of the full floating process can keep at pHú¥12. It can increase the recovery ratio of PbíóZn over 10% when Pb-Zn mine has oxide ratio over 30%.

Description

technical field [0001] The invention relates to a sulfide-oxidation mixed lead-zinc ore flotation method. Background technique [0002] my country's lead-zinc ore resources are abundant, but most of them belong to the sulfidation-oxidation mixed lead-zinc ore type, which has the characteristics of high lead-zinc oxidation rate and complex composition. The conventional flotation method is used to produce lead concentrate and zinc concentrate. Low recovery rate, large consumption of beneficiation reagents, poor economic benefits and other problems. The traditional flotation technology of lead-zinc ore only considers the flotation of sulfide-lead-zinc ore, while for oxide lead-zinc ore, it only considers the use of activators for activation, and then uses ordinary sulfide ore collectors for flotation. The control parameters of the flotation process are only the concentration of the chemical agent and the pH value of the pulp, ignoring a series of characteristics after the mixin...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00
Inventor 黎东明黎家足黎维中
Owner 黎东明
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