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Method of extracting metal indium and graphite from waste alkaline zinc margunese battery

A zinc-manganese battery and metal extraction technology, which is applied in the field of environmental protection and resource regeneration, can solve the problems of extraction of metal indium and graphite that are not mentioned, and achieve the effects of no secondary pollution, high purity, and convenient operation

Inactive Publication Date: 2006-06-28
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Patent application number 200510036193.7 "Recycling method of waste alkaline zinc-manganese batteries" discloses a recycling method of waste alkaline zinc-manganese batteries, including separating and extracting the positive and negative materials of waste alkaline zinc-manganese batteries, room temperature lye leaching, separation of zincate, electrolytic production of zinc, preparation of potassium manganate and electrolytic production of potassium permanganate, etc., but this method mainly recovers zinc and manganese, and does not mention the extraction of metal indium and graphite

Method used

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Embodiment 1～3

[0028] Insoluble matter can be prepared by existing methods, such as:

[0029] Method 1: Use the insoluble matter separated by filtration in the process of preparing potassium manganate in the "Recycling Method of Waste Alkaline Zinc-Manganese Batteries" with patent application number 200510036193.7. The specific steps are as follows: First, take out the copper nail of the negative electrode current collector by mechanical means and plastic gaskets and iron explosion-proof rings, and then cut open the battery casing to separate the iron casing from the positive and negative materials and recycle them; soak the separated positive and negative materials in lye at room temperature, and stir for 1 to 2 hours to use The positive and negative materials are dispersed, and the zinc compound is dissolved into zincate; the soaked mixture solution is filtered to obtain the filtrate and filter residue; potassium hydroxide and water are added to the filter residue, air is introduced and hea...

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PUM

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Abstract

This invention puts forward a method for picking up In and graphite from waste ZnMn batteries including separating and picking up the positive and negative substances from the batteries, filtering and separating non-dissolved substances to be dipped in acid to be mixed and filtered to get a solution with In and filtering the residue graphite, then electrolyzing and picking up In from the solution with In and drying the residue to get the graphite.

Description

technical field [0001] The invention relates to the application fields of environmental protection and resource regeneration, in particular to a method for extracting metal indium and graphite from waste alkaline zinc-manganese batteries. Background technique [0002] my country is a big producer and consumer of alkaline zinc-manganese batteries. Due to the low self-discharge rate, high capacity, and high power characteristics of alkaline zinc-manganese batteries, and because the country has formulated a low-mercury and mercury-free battery production policy, from January 1, 2005, domestically produced alkaline Zinc-manganese batteries have been completely mercury-free, and the production and consumption of alkaline zinc-manganese batteries occupy a dominant position in primary batteries. However, the environmental pollution and over-exploitation of mineral resources caused by mass production and use of alkaline zinc-manganese batteries have serious...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M6/52H01M10/54
CPCY02W30/84
Inventor 黄启明李伟善
Owner SOUTH CHINA NORMAL UNIVERSITY