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Method for recovering and processing waste lead-acid storage battery

A lead-acid battery, recycling technology, applied in battery recycling, waste collector recycling, recycling technology, etc., can solve problems such as pollution, raw material consumption, resource waste, etc. The effect of environmental pollution

Inactive Publication Date: 2012-10-24
尚诚德 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to avoid the shortcomings of the above-mentioned prior art, the present invention provides a method for recycling waste lead-acid batteries, which overcomes the problems of energy, raw material consumption, resource waste and pollution caused by chemical decopper removal

Method used

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Embodiment Construction

[0019] Based on the copper melting point being 1083°C, which is significantly higher than the lead melting point of 327°C; the lead density is 11.34 g / cm3, which is higher than the copper density of 8.9 g / cm3, the specific implementation of this embodiment is carried out in the following manner:

[0020] Use a cutting machine to cut out the battery box cover containing copper connectors and lead connectors in waste lead-acid batteries; use a crusher to break the cut battery box cover into particles, which contain plastic particles of the shell and copper connectors The copper particles and the lead particles of the lead connector, the plastic particles in the particles are floated with water, the floating plastic particles are removed, and the mixed pellets of the lead particles and copper particles deposited on the bottom of the water are obtained; the mixed pellets are heated to 350-400 °C, the lead particles are preferentially melted into lead liquid. At this time, the unmel...

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Abstract

The invention discloses a method for recovering and processing a waste lead-acid storage battery, which is characterized by comprising the following steps of: cutting a storage battery box cover containing a copper connector and a lead connector from the waste lead-acid storage battery and breaking the storage battery box cover into particles, floating and removing plastic particles in the particles by using water to obtain a mixed particle material of the lead particles and the copper particles; heating the mixed particle material to 350-400 DEG C to melt the lead particles to molten lead, directly casting lead pig and simultaneously filtering the copper particles; also crushing a storage battery body into particles, separating lead plaster attached to a grid plate in the particles from the grid plate by using a roller, throwing the grid plate particles into a smelting furnace, melting at 400 DEG C and directly casting; adding sodium carbonate to a lead plaster filtrate to ensure that PbSO4 is changed into PbCO3 by reaction, throwing the filtered and dried PbCO3, PbO and PbS into a smelting furnace for fusion, and then adding iron powder and carbon powder as reducers, thereby obtaining crude lead by utilizing reduction reaction. The method has the advantages of energy saving, power consumption reduction and environmental protection.

Description

technical field [0001] The invention relates to a method for recycling and treating waste lead-acid batteries. Background technique [0002] For waste lead-acid batteries, the main treatment method adopted at home and abroad is to recycle and regenerate and continue to process new lead-acid batteries. There are nearly 500 manufacturers engaged in the recycling and smelting of recycled lead from waste lead-acid batteries in my country, with production capacity ranging from several thousand tons to tens of thousands of tons. The workshop puts the pole plate and the slurry into the furnace at one time, and kneads at a high temperature of 1200°C to obtain the regenerated crude lead. [0003] Since the interior of the battery is composed of four basic structures: copper connectors, lead connectors, grids and lead paste, among them, the copper connectors, lead connectors and grids are made of high-purity copper or lead, and the lead paste is It is made of lead-based alloy, and th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/54
CPCY02E60/12Y02W30/84
Inventor 尚诚德姜家勇
Owner 尚诚德
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