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Method for flotation separation of lead sulfide and zinc sulfide minerals

A lead-zinc sulfide and mineral flotation technology, used in flotation, solid separation, etc., can solve the problems of high economic cost and large dosage of chemicals, and achieve the effect of reasonable process structure, reduction of dosage, and improvement of pulp flotation conditions.

Active Publication Date: 2019-01-11
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the mixed flotation process, it is necessary to solve the separation of mixed concentrates; in the priority flotation process, there are still problems such as large dosage of chemicals and high economic costs, and the problems of cyanide-free process and high-alkali process have not been completely solved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The flotation separation method of galena and sphalerite specifically comprises the following steps:

[0030] (1) Mineral raw materials:

[0031] The content of lead in the selected mineral raw materials is 2.85%, the content of zinc is 4.24%, and the content of silver is 36.37g / t. According to the phase analysis, lead mainly exists in the form of galena, and zinc mainly exists in the form of sphalerite. Gangue minerals mainly exist in the form of carbonates, and there are also a small amount of magnesium-containing, iron-containing minerals and a small amount of silicate minerals.

[0032] (2) Weigh 500g of raw ore, and grind it in a ball mill for 3.56 minutes. In the obtained slurry, the particle size is less than 0.074mm by mass, accounting for 65%.

[0033] (3) Pour the pulp into the flotation tank, and adjust the mass concentration of the pulp to 32%;

[0034] (4) During the roughing process, adjust the pH value of the slurry to 8.5, then add 100g / t potassium fer...

Embodiment 2

[0040] The flotation separation method of galena and sphalerite specifically comprises the following steps:

[0041] (1) Mineral raw materials:

[0042] The content of lead in the selected mineral raw materials is 2.16%, the content of zinc is 5.84%, and the content of silver is 32.15g / t. According to the phase analysis, lead mainly exists in the form of galena, and zinc mainly exists in the form of sphalerite. Gangue minerals mainly exist in the form of carbonates, and there are also a small amount of magnesium-containing, iron-containing minerals and a small amount of silicate minerals.

[0043] (2) Weigh 500g of raw ore, and grind it in a ball mill for 4.82 minutes, and 70% of the obtained slurry has a particle size of less than 0.074mm by mass.

[0044] (3) Pour the pulp into the flotation tank, and adjust the mass concentration of the pulp to 35%.

[0045] (4) During the roughing process, adjust the pH value of the slurry to 9, then add 200g / t potassium ferricyanide, 70...

Embodiment 3

[0051] The flotation separation method of galena and sphalerite specifically comprises the following steps:

[0052] (1) Mineral raw materials:

[0053] The content of lead in the selected mineral raw materials is 1.62%, the content of zinc is 7.35%, and the content of silver is 24.41g / t. According to the phase analysis, lead mainly exists in the form of galena, and zinc mainly exists in the form of sphalerite. Gangue minerals mainly exist in the form of silicates, and there are also a small amount of magnesium-containing, calcium-containing minerals and a small amount of carbonate minerals.

[0054] (2) Weigh 500g of raw ore, and grind it in a ball mill for 5.37 minutes, and 75% of the obtained pulp has a particle size of less than 0.074mm by mass.

[0055] (3) Pour the pulp into the flotation tank, and adjust the mass concentration of the pulp to 37%.

[0056] (4) During the roughing process, adjust the pH value of the slurry to 10, then add 300g / t potassium ferricyanide, ...

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Abstract

The invention relates to a method for flotation separation of lead sulfide and zinc sulfide minerals and belongs to the technical field of mineral flotation separation. The method comprises the stepsthat the pH value of ore pulp is regulated to be 8.5-10.5, zinc sulfate, sodium carbonate and ferricyanide are adopted as an inhibitor of blende, ethyl thio carbamate, xanthate and aerofloat are adopted as a collecting agent of galena, 2<#> oil is adopted as a foaming agent, and a qualified lead concentrate product is separated from the minerals; and then, copper sulfate is adopted as an activating agent of the blende, the xanthate is adopted as a collecting agent, a qualified zinc concentrate product is obtained through flotation, and thus a lead mineral and a zinc mineral are effectively separated. According to the method for flotation separation of the lead sulfide and zinc sulfide minerals, the galena and the blende can be separated through a flotation method, a reagent system is simple, the procedure is reasonable in structure, and the grade and the recovery rate of the lead and zinc minerals can be effectively increased; and a combined reagent containing the ferricyanide is adopted to inhibit the zinc mineral, the advantages of good selectivity, high inhibitive capacity, less dosage and the like are achieved, the ferricyanide is stable and has little influence on the environment, the zinc content in lead concentrates is effectively decreased under the premise of saving the reagent cost and under the precise of the low-alkali environment, and the lead mineral and the zincmineral are efficiently separated.

Description

technical field [0001] The invention relates to a mineral flotation separation method, in particular to a method for flotation separation of lead-zinc sulfide minerals. Background technique [0002] Lead and zinc have a wide range of application values ​​and play an important role in the development of the national economy and the vigorous construction of national defense. my country is the world's largest producer and smelter of lead and zinc and a big consumer. The most efficient recovery of valuable elements from lead-zinc polymetallic sulfide ores and the reduction of waste of resources has become an urgent problem to be solved in the development of my country's non-ferrous metal industry. [0003] The outer electron structures of lead and zinc atoms are similar, they all have strong sulfophilicity, and form the same soluble complex; lead and zinc intercalation particles are fine and complex in structure; lead and zinc ores are generally oxidized to varying degrees, All...

Claims

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Application Information

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IPC IPC(8): B03D1/018B03D1/02B03D1/08B03D101/02B03D101/04B03D101/06B03D103/02
CPCB03D1/018B03D1/025B03D1/08B03D2203/02B03D2201/04B03D2201/02B03D2201/06
Inventor 魏志聪曾明薛晨吴丹丹王衡嵩刘洋彭蓉
Owner KUNMING UNIV OF SCI & TECH
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