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Method for separating lead concentrate from ore

A technology for separating lead and ore, which is applied in solid separation, flotation, etc., and can solve the problems affecting the recovery rate of galena, large consumption, and many types

Inactive Publication Date: 2017-12-08
CHINA ENFI ENGINEERING CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Pb sulfide polymetallic ores often contain high levels of pyrite and sphalerite. The flotation process of this type of ore is generally lead flotation-zinc flotation process or lead-zinc mixed flotation-lead-zinc separation process. However, because the natural buoyancy of galena, pyrite and sphalerite is similar, the collector of galena usually has a strong collection effect on pyrite and sphalerite, so it is generally used Lime inhibits pyrite, and zinc sulfate and sodium sulfite inhibit the method of sphalerite flotation galena, so that the types of inhibitors used are many and the amount is large; in addition, conventional inhibitors lime, zinc sulfate and sodium sulfite, especially Lime will have a certain impact on the flotation of galena and seriously affect the recovery rate of galena

Method used

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  • Method for separating lead concentrate from ore

Examples

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Effect test

Embodiment 1

[0037] In a lead-zinc mine in Inner Mongolia, the lead rough concentrate ore contains 14.96wt% Zn, 25.44wt% Pb, and 40.22% pyrite. The ore is mixed with water, and the ore mixed with water is sent to a ball mill for ball milling. , to obtain an ore pulp with a mass concentration of 25wt% and a particle size of not more than 0.074 mm, accounting for 50-90%; then first mix and stir sodium thioglycolate and the ore pulp according to a mass ratio of 15:100000, and stir for 2-6 minutes to obtain the first mixed After the liquid, the collector ethiazide, the foaming agent terpineol oil and the first mixed liquid were mixed and stirred according to the mass ratio of 2:1.5:100000, and stirred for 2-6 minutes to obtain the second liquid with a pH value of 5.0-12.0. The second mixed liquid is then subjected to flotation for 3-10 minutes to obtain galena rough concentrate and tailings; finally, the galena rough concentrate is subjected to secondary concentration to obtain lead concentrate...

Embodiment 2

[0039] In a copper-lead-zinc mine in Canada, the lead rough concentrate ore contains 16.57wt% Zn, 12.36wt% Pb, and 51.12% pyrite. The ore is mixed with water, and the ore mixed with water is sent to a ball mill for ball milling treatment to obtain a pulp with a mass concentration of 33wt% and a particle size of no more than 0.074 mm, accounting for 50-90%; then first mix and stir sodium thioglycolate and the pulp according to a mass ratio of 12:100000, and stir for 2-6 minutes to obtain the first Mix the liquid, then mix and stir the collector xanthate, foaming agent methyl isobutyl carbinol and the first mixed liquid according to the mass ratio of 8:4:100000, stir for 2-6min, and obtain a pH value of 5.0- 12.0 of the second mixed liquid, and then flotation the second mixed liquid for 3-10 minutes to obtain galena coarse concentrate and tailings; finally, the galena coarse concentrate is subjected to three times of beneficiation to obtain lead concentrate . The grade of the l...

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Abstract

The invention discloses a method for separating lead concentrate from ore. The ore comprises galena, pyrite and marmatite. The method comprises the following steps: 1, carrying out wet grinding treatment on the ore to obtain ore pulp; 2 mixing the ore pulp with an inhibitor, a collecting agent and a foaming agent to carry out flotation treatment so as to obtain rough concentrate and tailings of galena; and 3, carrying out selection treatment on the rough concentrate of galena to obtain lead concentrate. With adoption of the method, the grade of the lead concentrate can be increased by 68% or above, the cost is low, the environmental protection is realized and the economic benefit is remarkable.

Description

technical field [0001] The invention belongs to the field of lead concentrate purification, in particular, the invention relates to a method for separating lead concentrate from ore. Background technique [0002] Pb sulfide polymetallic ores often contain high levels of pyrite and sphalerite. The flotation process of this type of ore is generally lead flotation-zinc flotation process or lead-zinc mixed flotation-lead-zinc separation process. However, because the natural buoyancy of galena, pyrite and sphalerite is similar, the collector of galena usually has a strong collection effect on pyrite and sphalerite, so it is generally used Lime inhibits pyrite, and zinc sulfate and sodium sulfite inhibit the method of sphalerite flotation galena, so that the types of inhibitors used are many and the amount is large; in addition, conventional inhibitors lime, zinc sulfate and sodium sulfite, especially It is lime that will have a certain impact on the flotation of galena and serio...

Claims

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Application Information

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IPC IPC(8): B03D1/012B03D1/008B03D101/02B03D101/04B03D101/06B03D103/02
CPCB03D1/008B03D1/012B03D2201/02B03D2201/04B03D2201/06B03D2203/02
Inventor 于传兵刘志国郭素红王传龙李明川
Owner CHINA ENFI ENGINEERING CORPORATION
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