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Lead oxide preparation process based on waste lead-acid storage battery lead plaster

A lead-acid battery and a preparation process technology, applied in the direction of lead monoxide, lead oxide, battery recycling, etc., can solve problems such as ecological environment and human health threats, harmful environment and human health, environmental and human hazards, etc., to avoid waste. Acid discharge, avoid the use of sulfuric acid, high recovery effect

Active Publication Date: 2021-11-09
太和县大华能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Lead-acid batteries are closely related to the national economy and the people's livelihood, such as electric power, transportation, information and other industries. They are indispensable products for social production and operation and human life. Development, lead-acid batteries will continue to grow, so the recycling of a large number of scrapped batteries will become a huge social problem. The lead-acid batteries themselves have a scrapping period of 3-5 years due to corrosion, passivation and other reasons. In recent years, my country's A huge number of scrapped lead-acid batteries are replaced every year from vehicles, ships, and communication base stations. Scrapped batteries not only waste resources, but also pose a serious threat to the ecological environment and human health;
[0003] Lead is a metal that is harmful to the environment and human health. The basic raw materials for manufacturing lead-acid batteries are metallic lead and sulfuric acid. With the scrapping of lead-acid batteries, if various lead wastes are not properly recycled, they will cause harm to the environment and human body. Greater hazard
At present, waste lead-acid batteries mainly include waste lead grids and lead paste, of which lead paste accounts for about 60-65% of the lead used in lead-acid batteries. Paste contains various forms of lead and lead compounds, such as lead, lead sulfate, lead oxide, lead dioxide, lead recovery is difficult;

Method used

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  • Lead oxide preparation process based on waste lead-acid storage battery lead plaster
  • Lead oxide preparation process based on waste lead-acid storage battery lead plaster
  • Lead oxide preparation process based on waste lead-acid storage battery lead plaster

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Present embodiment is a kind of preparation method of lead catcher, comprises the steps:

[0057] A1: Add 0.1mol diethanolamine and 50mL triethylamine into a three-necked flask equipped with a stirrer, condensing reflux tube, thermometer and constant pressure dropping funnel, at a temperature of 0°C and a stirring rate of 100r / min. Add 150mL p-toluenesulfonyl chloride dropwise while stirring according to the p-toluenesulfonyl chloride solution a formed by dissolving 0.11mol:50mL in dichloromethane, control the dropping rate at 1 drop / s, and heat up to 20°C after the dropwise addition The reaction was continued under stirring for 4 h, after the reaction was completed, the reaction product was added to ice water, the organic phase was separated and washed twice with dilute hydrochloric acid and distilled water with a mass fraction of 10%, then dried with anhydrous magnesium sulfate, filtered, and the filtrate was rotary evaporated, Obtain intermediate 1;

[0058] A2: Add...

Embodiment 2

[0067] Present embodiment is a kind of preparation method of lead catcher, comprises the steps:

[0068] A1: Add 0.1mol diethanolamine and 50mL triethylamine into a three-necked flask equipped with a stirrer, a condensing reflux tube, a thermometer and a constant pressure dropping funnel, at a temperature of 5°C and a stirring rate of 200r / min. Add 150mL p-toluenesulfonyl chloride dropwise while stirring according to the p-toluenesulfonyl chloride solution a formed by dissolving 0.11mol:50mL in dichloromethane, control the dropping rate at 1 drop / s, and raise the temperature to 25°C after the dropwise addition The reaction was continued under stirring for 6 h, after the reaction was completed, the reaction product was added to ice water, the organic phase was separated and washed 3 times with dilute hydrochloric acid and distilled water with a mass fraction of 10%, then dried with anhydrous magnesium sulfate, filtered, and the filtrate was rotary evaporated, Obtain intermediat...

Embodiment 3

[0078] This embodiment is a process for preparing lead oxide based on waste lead-acid battery lead paste, comprising the following steps:

[0079] Step 1: Weigh 50 parts of waste lead-acid battery lead paste, 10% sodium carbonate solution by mass fraction, 10 parts of lead scavenger from Example 1, and 300 parts of water according to parts by weight, and set aside;

[0080] Step 2: send the waste lead-acid battery lead paste and lye into a ball mill for ball milling for 1 hour to obtain a pre-desulfurization paste;

[0081] Step 3: Stir and react the pre-desulfurization paste, hydrogen peroxide, lead scavenger and water for 5 hours at a stirring rate of 400 r / min to obtain a mixed solution;

[0082] Step 4: Introduce carbon dioxide into the mixed solution, and roast the precipitated product to obtain lead oxide.

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Abstract

The invention discloses a lead oxide preparation process based on waste lead-acid storage battery lead plaster, and relates to the technical field of waste storage battery treatment. The waste lead-acid storage battery lead plaster and alkali liquor are fed into a ball mill for ball milling to obtain pre-desulfurized paste, lead sulfate is formed to generate lead oxide, the pre-desulfurized paste, hydrogen peroxide, a lead catching agent and water are stirred to react, the hydrogen peroxide enables lead and lead dioxide to react to generate lead oxide, then the newly generated active lead oxide and the lead catching agent generate a complexation dissolution reaction to obtain lead complex ions, a mixed solution is obtained, finally a precipitating agent is introduced into the mixed solution, roasting is carried out a precipitation product, and lead oxide is obtained; and the lead oxide preparation process is low in energy consumption, reduces secondary pollution caused by lead dust and sulfur dioxide, is short in process flow, high in recovery rate and high in recovery purity, and is an efficient, environment-friendly and energy-saving lead oxide preparation process, and the lead catching agent and a precipitating agent are recycled.

Description

technical field [0001] The invention relates to the technical field of waste battery treatment, in particular to a process for preparing lead oxide based on lead paste of waste lead-acid batteries. Background technique [0002] Lead-acid batteries are closely related to the national economy and the people's livelihood, such as electric power, transportation, information and other industries. They are indispensable products for social production and operation and human life. Development, lead-acid batteries will continue to grow, so the recycling of a large number of scrapped batteries will become a huge social problem. The lead-acid batteries themselves have a scrapping period of 3-5 years due to corrosion, passivation and other reasons. In recent years, my country's A huge number of scrapped lead-acid batteries are replaced every year from vehicles, ships, and communication base stations. Scrapped batteries not only waste resources, but also pose a serious threat to the ecolo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B13/02C22B13/00C22B1/02C22B1/11H01M10/54C01G21/06C08F126/04
CPCC22B7/006C22B7/001C22B13/025C22B13/045C22B1/02C22B1/11H01M10/54C01G21/06C08F126/04Y02W30/84Y02P10/20
Inventor 代辉朱成龙毛荣海刘俊杰朱乾龙
Owner 太和县大华能源科技有限公司
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