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Regenerated lead copper removal agent and preparation method thereof

A technology of copper removal agent and regenerated lead, which is applied in the field of regenerated lead, can solve problems such as poor separation effect of slag and lead, environmental pollution, and reduced lead yield, so as to improve the separation effect of slag and lead, solve environmental pollution problems, and improve contact The effect of the reaction area

Inactive Publication Date: 2019-11-26
骆驼集团蓄电池研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of sulfur copper removal are: (1) The specific surface area of ​​sulfur is small, and the contact efficiency with copper in the lead liquid is low, resulting in long copper removal time, high energy consumption, large sulfur consumption, low production efficiency and high cost
(2) The copper scum formed by the reaction of sulfur and lead liquid contains a large amount of lead sulfide, the separation effect of slag and lead is poor, the amount of slag is large, and the slag contains high lead, which reduces the lead yield
(3) Sulfur reacts easily to produce SO after contacting with liquid lead 2 , leading to waste of copper removal agent, while SO 2 Emissions cause environmental pollution

Method used

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  • Regenerated lead copper removal agent and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0021] A regenerated lead copper remover comprises the following components by mass fraction: 70% of pyrite, 10% of fluorite, 15% of sulfur and 5% of sodium carbonate.

[0022] The copper removal agent is prepared through the following steps:

[0023] 1) Mix pyrite and fluorite according to the formula ratio, then crush, sieve, sort, dry at 105°C for 60 minutes, and then cool naturally to obtain semi-finished raw materials with a particle size of 0.5-30 μm;

[0024] 2) Mix the pyrite and fluorite powder produced in step 1 with flaky sulfur and sodium carbonate according to the formula ratio, and stir at a speed of 60r / min for 60min to obtain a copper removing agent.

Embodiment 2

[0026] A regenerated lead copper remover comprises the following components by mass fraction: 65% of pyrite, 15% of fluorite, 10% of sulfur, and 10% of sodium carbonate.

[0027] The copper removal agent is prepared through the following steps:

[0028] 1) Mix pyrite and fluorite according to the formula ratio, then crush, sieve, sort, dry at 110°C for 65 minutes, and then cool naturally to obtain semi-finished raw materials with a particle size of 0.5-30 μm;

[0029] 2) Mix the pyrite and fluorite powder produced in step 1 with flaky sulfur and sodium carbonate according to the formula ratio, and stir at a speed of 60r / min for 60min to obtain a copper removing agent.

Embodiment 3

[0031] A regenerated copper remover for lead comprises the following components by mass fraction: 75% of pyrite, 10% of fluorite, 10% of sulfur, and 5% of sodium carbonate.

[0032] The copper removal agent is prepared through the following steps:

[0033] 1) Mix pyrite and fluorite according to the formula ratio, then crush, sieve, sort, bake at 115°C for 70 minutes, and then cool naturally to obtain semi-finished raw materials with a particle size of 0.5-30 μm;

[0034] 2) Mix the pyrite and fluorite powder produced in step 1 with flaky sulfur and sodium carbonate according to the formula ratio, and stir at a speed of 60r / min for 60min to obtain a copper removing agent.

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Abstract

The invention discloses a regenerated lead copper removal agent and a preparation method thereof. The regenerated lead copper removal agent comprises the following components of, in parts by mass, 60%-80% of pyrite, 1%-20% of fluorite, 5%-30% of sulfur and 1%-10% of sodium carbonate. The method comprises the following steps that the pyrite and fluorite are mixed, then the mixture is subjected to crushing, sieving, sorting, drying and cooling to meet the requirements of the particle size and the water content, wherein the drying temperature is 90-150 DEG C, and the drying time is 30-90 minutes;and the pyrite and the fluorite powder are mixed together with sulfur and sodium carbonate according to a formula to obtain a regenerated lead copper removal agent. According to the regenerated leadcopper removal agent, the specific surface area is large, the copper removal reaction efficiency can be improved, the slag amount and the slag lead content can be reduced, the lead direct yield is improved, meanwhile, SO2 is basically not generated in the reaction process, so that the problem of environmental pollution caused by SO2 emission is solved.

Description

technical field [0001] The invention belongs to the technical field of regenerated lead, in particular to a regenerated lead copper remover and a preparation method thereof. Background technique [0002] At present, the principle of copper removal and refining of secondary lead is copper removal by vulcanization, and the copper removal agent used is generally flake sulfur. The temperature of adding sulfur to remove copper is generally around 350°C. The copper in the lead liquid reacts with sulfur to form copper sulfide and floats on the surface of the lead liquid to form copper scum by stirring with a mixer. The copper scum is removed by salvaging the copper scum. The copper content of the final lead liquid is generally 0.001%~0.01%. The disadvantages of sulfur copper removal are: (1) The specific surface area of ​​sulfur is small, and the contact efficiency with copper in the lead liquid is low, resulting in long copper removal time, high energy consumption, large sulfur c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B13/02
CPCC22B13/02
Inventor 孔庆波张行祥舒绍明李顺海王进李培文
Owner 骆驼集团蓄电池研究院有限公司
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