Leaching method of nickel cobalt lithium manganate waste battery positive-negative electrode mixed material

A technology of nickel-cobalt lithium manganese oxide and mixed materials, which is applied in the field of leaching the positive and negative electrode mixed materials of nickel-cobalt lithium manganese oxide waste batteries, can solve the problems of industrial pure oxygen storage, transportation and use, uneconomical industrial pure oxygen for personal use, The industrial pure oxygen amount is not large, etc., to achieve obvious economic and environmental benefits, reduce pollution treatment costs, and improve the effect of metal leaching rate
CN103757336AInactive Publication Date: 2014-04-30SICHUAN NORMAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SICHUAN NORMAL UNIVERSITY
Publication Date
2014-04-30
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention provides a leaching method of a nickel cobalt lithium manganate waste battery positive-negative electrode mixed material, which comprises the following steps: adding a positive-negative electrode mixed material subjected to roasting pretreatment and separated from nickel cobalt lithium manganate waste batteries and vinasse into a pressure-resistant sulfuric-acid / nitric-acid-corrosion-resistant reaction kettle, adding a sulfuric acid-nitric acid mixed solution, and carrying out agitation leaching under sealed conditions.
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Description

technical field

[0001] The invention relates to a method for leaching the positive and negative electrode mixed materials of nickel-cobalt lithium manganate waste battery. Background technique

[0002] Nickel-cobalt lithium manganese oxide battery (battery whose main metal elements are nickel, cobalt, manganese, and lithium in the positive and negative mixed materials) is a new type of battery. After the battery is used and scrapped, a large number of waste batteries will be produced. Because this type of battery contains a large amount of heavy metals, if it is discarded into the environment, it will cause great direct and potential harm to the environment. The positive and negative mixed materials of nickel cobalt lithium manganate battery mainly contain nickel, cobalt, lithium, copper, aluminum and manganese, of which the total content of nickel, cobalt and lithium is as high as 50%, which is very valuable for recycling. At present, the processes for recovering cobalt, ...

Claims

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