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Method for reclaiming and recycling waste nickel-cadmium battery

A nickel-cadmium battery and production method technology, applied in chemical instruments and methods, cadmium compounds, battery recycling, etc., can solve the problems of high production cost and high risk of secondary pollution, and achieve the effect of retaining usability

Inactive Publication Date: 2009-04-15
SOUTHEAST UNIV
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Problems solved by technology

The main disadvantage of this method is high production cost and high risk of secondary pollution

Method used

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  • Method for reclaiming and recycling waste nickel-cadmium battery

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Embodiment Construction

[0021] 1. Mechanical crushing of batteries:

[0022] Existing nickel-cadmium batteries generally adopt the method of coating the positive and negative electrode active materials on nickel foam and perforated steel strip respectively, and using a diaphragm to separate the electrode materials from direct contact. In order to make reprocessing easier, the crushing of the battery should be done in a gentle way. In the laboratory, a hacksaw can be used to saw the battery case that has discharged the residual power; in industry, a machine that can peel off the plastic and metal case of the battery that has discharged the residual power can be used to remove the battery’s shell. The metal case is separated from the contents of the battery.

[0023] 2. Separation of electrolyte from other solid contents

[0024] The electrolyte contained in the battery content can be washed out by using water decarbonated, and the electrolyte can be separated from other solid substances by filtratio...

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Abstract

The invention provides a resource recycling production method of waste nickel cadmium batteries, relating to a physical separation method for the various components of the waste nickel cadmium battery, including a shell, an electrolyte, a positive plate, a negative electrode material and a negative electrode electricity collecting body perforated steel ribbon, and a recycling scheme of a pure electrode material obtained by separation; and the method provides a low-cost way for resource recycling production of the waste nickel cadmium battery. Concretely, all the components of the waste nickel cadmium battery are separated by the physical method at first, then the obtained positive plate and negative electrode powder are chemically treated to prepare new positive electrode material Ni(OH)2 and negative electrode material Cd(OH)2 of the nickel cadmium battery, and then the commercialized nickel cadmium battery production line is used for producing new nickel cadmium batteries.

Description

technical field [0001] The present invention relates to a physical separation method for various components of waste nickel-cadmium batteries, including shell, electrolyte, positive electrode material, negative electrode material, current collector perforated steel strip, and the separated positive electrode material and negative electrode material. The reuse scheme provides a low-cost route for the recycling of waste nickel-cadmium batteries and the recycling production of nickel-cadmium batteries. Background technique [0002] Nickel-cadmium (Ni-Cd) battery, also known as nickel-cadmium battery, is a fairly mature secondary battery. It has the characteristics of long service life, high output power, and short charging time, and is currently mainly used in the power tool industry. Driven by strong market demand, my country has become the world's largest producer of nickel-cadmium batteries, with an annual output of 1 billion nickel-cadmium batteries. Among them, about 800...

Claims

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Application Information

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IPC IPC(8): C01G53/04C01G11/00
CPCY02E60/12Y02W30/84
Inventor 雷立旭曹磊唐琛明
Owner SOUTHEAST UNIV
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