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A process for recycling valuable metals in waste lead-acid battery lead paste by using iron powder and cone glass

A technology for waste lead-acid batteries and valuable metals, applied in the field of lead paste recycling and treatment, can solve the problems of long process flow, sulfur pollution, large investment, etc., and achieve the effect of low cost and high efficiency

Active Publication Date: 2021-07-27
四川正祥环保技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pre-desulfurization-low-temperature reduction smelting process is to desulfurize the waste lead-acid battery lead paste with sodium carbonate or ammonium carbonate first, to produce lead carbonate and by-product sodium sulfate or ammonium sulfate, and then reduce the desulfurized lead paste. This process can effectively reduce the production of sulfur dioxide in the smelting process, but the process is long, the cost of wet desulfurization is high, the investment is large, and the by-product sodium sulfate or ammonium sulfate is poor in sales; automatic separation of waste lead-acid batteries-new process of oxygen-enriched bottom blowing smelting lead regeneration It is to put the waste lead-acid battery lead paste and lead concentrate into the oxygen bottom-blowing smelting furnace to produce crude lead and high-lead slag, and the SO produced by the smelting reaction 2 The flue gas and concentrate smelting flue gas are sent together to produce sulfuric acid, and the high-lead slag is then reduced to produce crude lead. This process basically solves the problem of sulfur pollution, but the waste lead-acid battery lead paste needs to be combined with the lead concentrate processing, the whole process is long and the system investment is large

Method used

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  • A process for recycling valuable metals in waste lead-acid battery lead paste by using iron powder and cone glass
  • A process for recycling valuable metals in waste lead-acid battery lead paste by using iron powder and cone glass
  • A process for recycling valuable metals in waste lead-acid battery lead paste by using iron powder and cone glass

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Effect test

Embodiment 1

[0044] A process for recycling valuable metals in waste lead-acid storage battery lead paste by utilizing iron powder and cone glass, comprising the following steps:

[0045] S1. Material crushing: crush the conical glass in a pulverizer to obtain conical glass powder;

[0046] S2. Material mixing: Take the lead paste of waste lead-acid batteries from a battery dismantling factory in Ganluo, add goethite slag, cone glass powder, and limestone, mix them with a double-girder grab bridge crane, ferment and solidify for more than 24 hours, and get curing material;

[0047] S3. Press bricks to make blanks: After stirring the solidified materials in a double-shaft mixer, put them into a fully automatic forming static press to pressurize 8000kN to press bricks to make blanks, and then put them into a fully automatic palletizing conveyor for palletizing , stacked at room temperature for 3 days to carry out the brick curing reaction to obtain bricks;

[0048]S4. Reduction smelting in...

Embodiment 2

[0051] A process for recycling valuable metals in waste lead-acid storage battery lead paste by utilizing iron powder and cone glass, comprising the following steps:

[0052] S1. Material crushing: crush the conical glass in a pulverizer to obtain conical glass powder;

[0053] S2. Material mixing: Take the waste lead-acid battery lead paste from a battery dismantling factory in Ganluo, add goethite slag, cone glass powder, and limestone, mix it with a double-girder grab bridge crane, ferment and solidify for more than 24 hours, and get curing material;

[0054] S3. Press bricks to make blanks: After stirring the solidified materials in a double-shaft mixer, put them into a fully automatic forming static press and pressurize them at 9000kN to press bricks to make blanks, and then put them into a fully automatic palletizing conveyor for palletizing , stacked at room temperature for 5 days to carry out the brick curing reaction to obtain bricks;

[0055] S4. Reduction smelting...

Embodiment 3

[0058] A process for recycling valuable metals in waste lead-acid storage battery lead paste by utilizing iron powder and cone glass, comprising the following steps:

[0059] S1. Material crushing: crush the conical glass in a pulverizer to obtain conical glass powder;

[0060] S2. Material mixing: Take the waste lead-acid battery lead paste from a battery dismantling factory in Ganluo, add pyrite slag, cone glass powder, and limestone, mix with a double-girder grab bridge crane, ferment and solidify for more than 24 hours, obtain solidified material;

[0061] S3. Brick making: After stirring the solidified material in a twin-shaft mixer, put it into a fully automatic forming static press and pressurize it to 10,000kN to make bricks, and then put it into a fully automatic palletizing conveyor for palletizing , stacked at room temperature for 7 days to carry out the brick curing reaction to obtain bricks;

[0062] S4. Reduction smelting in the sulfur-fixing furnace: put the b...

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Abstract

The invention discloses a process method for recovering valuable metals in lead paste of waste lead-acid batteries by using iron powder and cone glass, and belongs to the technical field of lead paste recovery and treatment. The method is to mix conical glass, iron powder and lead-acid battery lead paste with auxiliary materials, use the sulfur in the lead sulfate paste and the iron in the iron powder to carry out fermentation and solidification reaction, and then make billets, solidify and use fire smelting to produce lead Alloy, iron columbine, soot and slag, not only achieve the purpose of comprehensive recovery of valuable metals, but also reduce the emission of sulfur dioxide. The process is simple and environmentally friendly, with low cost and high recycling efficiency.

Description

technical field [0001] The invention belongs to the technical field of lead paste recovery and treatment, and in particular relates to a process method for recycling valuable metals in waste lead-acid storage battery lead paste by using iron powder and cone glass. Background technique [0002] In the recycling and disposal process of waste lead-acid batteries, the waste lead-acid batteries are mainly divided into lead sulfate paste, lead grid, plastic particles and waste acid after dismantling. Among them, the lead sulfate paste contains valuable metals such as lead, tin and antimony. It also contains a large amount of harmful sulfates. Lead sulfate paste is a dangerous metal solid waste. In recent years, my country's secondary lead industry has made remarkable progress and has initially formed an independent industry. Some domestic research institutions and enterprises have targeted domestic waste lead acid Low recovery rate, outdated equipment, high cost and low concentratio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/00C22B13/02H01M10/54B28B3/00
CPCB28B3/003C22B7/001C22B13/025H01M10/54Y02W30/84Y02P10/20
Inventor 巫文嵩陈军
Owner 四川正祥环保技术有限公司
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