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A method for preparing lead sulfide superfine powder by using waste lead-acid battery lead paste

A lead-acid battery, lead sulfide technology, applied in the direction of lead sulfide, battery recycling, recycling technology, etc., can solve the problems of low added value of recycled products, waste of resources, environment, pollution, etc., and achieve proper resource treatment and simple operation. Effect

Active Publication Date: 2017-10-27
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at solving the problems of resource waste and environmental pollution caused by waste lead-acid batteries, and proposes a simple, efficient, and pollution-free recycling method for the current situation that the existing technology for recycling waste lead-acid batteries is insufficient and the added value of recycled products is low. Method for preparing lead sulfide superfine powder from waste lead-acid battery lead paste

Method used

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  • A method for preparing lead sulfide superfine powder by using waste lead-acid battery lead paste
  • A method for preparing lead sulfide superfine powder by using waste lead-acid battery lead paste
  • A method for preparing lead sulfide superfine powder by using waste lead-acid battery lead paste

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Experimental program
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Effect test

Embodiment 1

[0033]Firstly, the waste lead-acid batteries are crushed and screened by the conventional process, and the obtained lead paste is dried in an electronic temperature-adjusting electric furnace at 150°C, and then ground into particles with a particle size of 0.05~0.15mm, and then 30g of lead paste and 6g of carbon are weighed. The powder is fully mixed, and the mixed material is loaded into the heating chamber of the tube furnace with a crucible, and the two ends of the heating chamber are isolated with a pipe plug with holes. 10cm from the front end. At the rear end of the pipe plug with holes at the other end of the heating chamber, that is, a quartz plate is placed at a place 60 cm away from the pipe plug in the condensation chamber as a collection base. For details on the location of the crucible and collection base, see figure 1 shown. After the tube furnace is sealed, start the vacuum pump group to exhaust the air in the furnace, so that the vacuum in the furnace is betw...

Embodiment 2

[0035] Firstly, the waste lead-acid batteries are crushed and screened by the conventional process, and the obtained lead paste is dried in an electronic temperature-regulated electric furnace at 150°C, and then ground into particles with a particle size of 0.05~0.15mm, and then 30g of lead paste and 6g of carbon are weighed. The powder is fully mixed, and the mixed material is loaded into the heating chamber of the tube furnace with a crucible, and the two ends of the heating chamber are isolated with a pipe plug with holes. 10cm from the front end. At the rear end of the pipe plug with holes at the other end of the heating chamber, that is, a quartz plate is placed at a place 60 cm away from the pipe plug in the condensation chamber as a collection base. For details on the location of the crucible and collection base, see figure 1 shown. After the tube furnace is sealed, start the vacuum pump group to exhaust the air in the furnace, so that the vacuum degree in the furnace...

Embodiment 3

[0037] Firstly, the waste lead-acid batteries are crushed and screened by the conventional process, and the obtained lead paste is dried in an electronic temperature-regulated electric furnace at 150°C, and then ground into particles with a particle size of 0.05~0.15mm, and then 30g of lead paste and 6g of carbon are weighed. The powder is fully mixed, and the mixed material is loaded into the heating chamber of the tube furnace with a crucible, and the two ends of the heating chamber are isolated with a pipe plug with holes. 10cm from the front end. At the rear end of the pipe plug with holes at the other end of the heating chamber, that is, a quartz plate is placed at a place 60 cm away from the pipe plug in the condensation chamber as a collection base. For details on the location of the crucible and collection base, see figure 1 shown. After the tube furnace is sealed, start the vacuum pump group to exhaust the air in the furnace, so that the vacuum degree in the furnace...

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Abstract

The invention discloses a method for preparation of lead sulfide ultrafine powder from waste lead-acid battery lead paste. The method includes: dismantling and classifying waste lead-acid batteries, under a vacuum condition, fully mixing the lead paste mixed with elemental lead, lead oxide and lead sulfate with carbon powder, then performing heating, and carrying out carbon reduction, evaporation gasification and sulfuration processes, and under inert gas quenching and a heating chamber and condensation chamber under temperature difference gradient, acquiring lead sulfide ultrafine powder. The method provided by the invention can effectively recycle waste lead-acid batteries, and also can be applied to recovery of crude lead waste with high lead content. While reducing the environmental heavy metal lead pollution, the method provided by the invention also prepares high value-added products, and has the characteristics of easy operation, high efficiency, and environmental friendliness, etc.

Description

technical field [0001] The invention belongs to the high-value recycling of electronic waste in the field of environmental protection and resource recycling comprehensive utilization, relates to the resource recycling of lead in electronic waste and the preparation of ultrafine lead sulfide powder, and specifically relates to a method for utilizing waste lead-acid batteries A method for preparing lead sulfide superfine powder from lead paste. Background technique [0002] Due to the advantages of low price, stable operation and wide adaptable operating temperature, lead-acid batteries are widely used as an important power supply equipment in various electrical facilities, especially in developing countries. More than 95% of electric vehicles in China use lead-acid batteries as power sources. The widespread use of lead-acid batteries has prompted a large number of waste lead-acid batteries to be produced every year, which makes waste lead-acid batteries the main raw material...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G21/21B82Y30/00H01M10/54
CPCY02W30/84
Inventor 詹路夏辉鹏
Owner EAST CHINA NORMAL UNIV
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