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Recycling process of waste battery lead

A technology for discarding batteries and processes, applied in the direction of photography process, photography auxiliary process, improvement of process efficiency, etc., can solve the problems of reduced ductility and corrosion resistance, unsuitable for industrial use, increase in lead hardness, etc. The effect of repeated recycling and easy processing

Active Publication Date: 2016-09-07
GUANGDONG NEW ENVIRONMENTAL PROTECTION TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the presence of impurities, not only the hardness of lead increases, but the ductility and corrosion resistance decrease, which is not suitable for industrial use, but also causes waste of precious metals.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A recovery process for waste battery lead is characterized in that it is completed according to the following steps:

[0024] (1) Lead-acid batteries are mechanically cut and crushed, and then rinsed and screened with alkaline solution by a rotary sieve washing machine to screen out plastics, waste electrolyte and crude lead, and the waste electrolyte is transported to the ultrafiltration membrane treatment system for further processing deal with;

[0025] (2) The waste electrolyte and crude lead treated in step (1) are discharged into the desulfurization tower for precipitation and filtration, and a sufficient amount of dilute sulfuric acid is added to the waste electrolyte and crude lead and heated to 100~200°C to completely convert to lead sulfate, stop the reaction;

[0026] (3), suction filtration, filter cake is cleaned to neutrality with distilled water, obtains wet product, then wet product is put into oven, is dried under the condition above 160 ℃, obtains dry...

Embodiment 2

[0042] A recovery process for waste battery lead is characterized in that it is completed according to the following steps:

[0043] (1) The lead-acid battery is mechanically cut and crushed, and then washed and screened by the rotary sieve washing machine with potassium hydroxide to screen out plastics, waste electrolyte and crude lead, and the waste electrolyte is transported to the ultrafiltration membrane treatment system for further processing. For processing, the product of potassium hydroxide and potassium carbonate isotopic potassium will not produce excess metal ions, and potassium element is a relatively active metal, which is not easy to be replaced and is very soluble in water, so it is easy to handle;

[0044] (2) The waste electrolyte and crude lead after treatment in step (1) are discharged into the desulfurization tower for precipitation and filtration, and a sufficient amount of dilute sulfuric acid is added to the waste electrolyte and crude lead and heated to...

Embodiment 3

[0051](1) Lead-acid batteries are mechanically cut and crushed, and then rinsed and screened with alkaline solution by a rotary sieve washing machine to screen out plastics, waste electrolyte and crude lead, and the waste electrolyte is transported to the ultrafiltration membrane treatment system for further processing deal with;

[0052] (2) The waste electrolyte and crude lead after treatment in step (1) are discharged into the desulfurization tower for precipitation and filtration, and a sufficient amount of dilute sulfuric acid is added to the waste electrolyte and crude lead and heated to 100°C to completely convert into lead sulfate , stop the reaction;

[0053] (3), suction filtration, filter cake is cleaned to neutrality with distilled water, obtains wet product, then wet product is put into oven, is dried under the condition of 160 ℃, obtains dry lead sulfate and is cooled to normal temperature;

[0054] (4) Add the lead sulfate obtained in step (3) to a saturated po...

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Abstract

The invention relates to the technical field of battery recycling equipment, in particular to a recycling process of waste battery lead. The recycling process is completed according to the following steps that a lead storage battery is mechanically cut off and broken and then is washed and screened at the same time by a rotary screen washing machine through an alkaline solution, plastic, waste electrolytes and lead bullion are screened out, and the waste electrolytes are conveyed to an ultrafiltration membrane processing system to be processed; lead carbonate is subjected to electromagnetic induction heating, sufficient oxygen is led in, the electromagnetic induction frequency ranges from 8 KHz to 60 KHz, the control temperature ranges from 330 DEG C to 460 DEG C, heat preservation is performed for 5 h to 6 h, and completely-oxidized lead tetroxide will be obtained; and in the electrolysis period, an electromagnetic induction magnetic field is applied at the bottom of an electrolytic tank, the magnetic induction intensity is 800 mT, and national standard number 1 lead is obtained. The recycling process has the beneficial effects that refining of the lead is achieved through a method that electrolysis is used in cooperation with electromagnetism, the purity of the lead is greatly improved, and repeated recycling of precious metal is also achieved; and the recycling process is simple, machining is easy, the recycling process is suitable for large-scale recycling, and therefore the recycling cost is reduced.

Description

technical field [0001] The invention relates to the technical field of battery recycling equipment, in particular to a recycling process for waste battery lead. Background technique [0002] At present, my country's secondary lead industry has gradually developed under the condition of emphasizing environmental protection and resource comprehensive utilization policy requirements. With the rapid development of my country's automobile, communication and chemical industries, the requirements for lead continue to increase, and the secondary lead industry has become an indispensable and important part of the sustainable development strategy of the lead metal industry. [0003] Lead plates and lead pipes are often used as acid-resistant linings and anti-corrosion covers for smelting and chemical equipment, and lead is also used as protective layers and protective screens in the atomic energy industry and X-rays. Lead compounds are used in the pigment industry, glass industry, pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B1/00C25C1/18C22B13/00C22B3/08C22B3/46C02F1/44
CPCC02F1/444C22B1/005C22B3/08C22B3/46C22B7/007C22B13/045C25C1/18Y02P10/20
Inventor 朱松庭
Owner GUANGDONG NEW ENVIRONMENTAL PROTECTION TECH CO LTD
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