Technique of adjusting and controlling electric potential for floatation of sulphide ore of lead and zinc

A potential control, sulfide ore technology, applied in flotation, solid separation and other directions, can solve the problems of long operation and control of lead-zinc sulfide ore flotation process, low resource utilization rate, poor product quality and other problems, and can achieve flotation power. The effect of reducing energy consumption and equipment operating costs, shortening the flotation process, and improving the recovery rate

Inactive Publication Date: 2005-01-12
南京银茂铅锌矿业有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the existing lead-zinc sulfide ore flotation process is long and difficult to operate and control, the product quality is poor, and the resource utilization rate is low. High-efficiency lead-zinc sulfide ore flotation process with low pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0018] Utilize raw ore ore sample to add the lime of different dosage in table 1 in mill, ore is ground to -200 order 72%, make lead, zinc, sulfur fully monomer dissociation, add 40 grams / ton ethylsulfide nitrogen at the same time, then Add foaming agent into the ground pulp for lead selection. See Table 1 for relevant technical indicators.

[0019] It can be seen from Table 1 that when the lead potential is controlled at 150-180mv, the recovery rate of lead and the grade of lead reach the best at the same time, and the floatability of sulfur iron and zinc is poor at this time. When the potential is at 166mv, the grade and recovery rate of galena are the best at the same time, and the floatability of sphalerite and pyrite is very poor. Effective separation of lead, zinc and sulfur.

[0020] Lime dosage kg / t

example 2

[0022] Use raw ore samples to add lime into the mill, grind the ore to -200 mesh 72%, so that lead, zinc, and sulfur are fully dissociated, and at the same time add the same amount but different ratios of ethiazide and butyl xanthate Collector, the pulp potential is controlled at 160-170mv, and then a foaming agent is added to the ground pulp for lead selection. See Table 2 for relevant technical indicators.

[0023] As can be seen from Table 2, the selected lead potential is controlled at 160-170mv, and the recovery rate of lead with a certain proportion of butylxanthate properly mixed in the selected lead collector will be higher. When the ratio of ethiazide and butyl xanthate is 3:1, the grade and recovery rate of lead are both higher, which is the optimal ratio of medicaments.

[0024]

example 3

[0026] Use raw ore samples to add lime to the mill, grind the ore to -200 mesh 72%, so that the lead, zinc, and sulfur are fully dissociated, and at the same time add ethiazide as the main butyl xanthate as the auxiliary lead selection and capture Collecting agent, adding different amounts of zinc sulfate to carry out the comparison test of the amount of inhibitor zinc sulfate, the pulp potential is controlled at 160-170mv, and then add foaming agent to the ground pulp for lead selection. See Table 3 for relevant technical indicators.

[0027] It can be seen from Table 3 that adding a small amount of zinc sulfate is still helpful to improve the main grade of lead concentrate and reduce the lead and zinc content.

[0028] Inhibitor

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PUM

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Abstract

An electric level controlled floatation technology for lead zinc sulfuride ore features that in the step of floating lead, the electric level of ore sludge is regulated to 140-210 mv by adding lime into grinder while the capturer is added, and in the step of floating zinc the electric level of ore sledge is regulated to 150-170 mv by adding lime to lead tailings while adding capturer. Its odvantage is high recovery rate.

Description

technical field [0001] The invention relates to a potential regulating flotation mineral processing technology in mineral processing technology, in particular to a potential regulating flotation process of lead-zinc sulfide ore. Background technique [0002] At present, the beneficiation and separation process of lead-zinc polymetallic sulfide ores, especially high-sulfur lead-zinc ores at home and abroad is usually based on the sequence of natural buoyancy of minerals. , Flotation collectors usually use black medicine or xanthate collectors to select lead, xanthate to select zinc, or first mix lead and zinc to float out, first throw tails and sulfur iron, and then use zinc sulfate and sulfurous acid or Sulphite inhibits zinc for lead-zinc separation, and some lead-zinc beneficiation plants still use cyanide to inhibit zinc and levitate lead, but these processes have poor effect, low resource utilization, poor product quality, long flotation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00B03D1/002B03D1/018
Inventor 孙水裕王方汉刘如意缪建成顾国华汤成龙胡继华肖斌云
Owner 南京银茂铅锌矿业有限公司
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