Recycling method of waste zinc-manganese battery

A zinc-manganese battery, recycling technology, applied in the direction of battery recycling, waste collector recycling, recycling technology, etc., can solve the problems of short process flow, complex process flow, high recovery efficiency, etc., achieve high economic and social value, separate Good effect and simple equipment

Inactive Publication Date: 2010-03-17
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the pyrometallurgical process is sequentially separated according to the volatility difference of different substances in the battery under high temperature conditions. The advantage of this method is that the process flow is short and the recovery efficiency is high. The disadvantage is that the energy consumption is large and the investment in equipment is large. ; The hydrometallurgy method dissolves the battery waste first and then separates it. The process is more complicated, and it is easy to realize the separate recovery of different species in the battery, but this process often brings secondary pollution

Method used

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  • Recycling method of waste zinc-manganese battery

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Embodiment

[0026] The flow chart of the present invention is as figure 1 Shown, the recovery processing method of waste zinc-manganese battery of the present invention, it comprises the following steps:

[0027] 1) The battery is broken and the electrolyte is recovered;

[0028] 2) Separating iron and organic components from the water-washed crushed product;

[0029] 3) acid dissolves and separates the residue;

[0030] 4) Zinc is recovered from the filtrate.

[0031] In the above step 1), the shell of the used battery is opened, and then the electrolyte is separated by washing with water.

[0032] In the above step 1), the shell of the battery is first broken and opened, and the pole core material can fall off from the shell in the subsequent ball milling process, and the electrolyte is recovered by filtering after adding water to the broken material for soaking.

[0033] In the above step 2), the method including ball milling, sieving and magnetic separation is used to separate the...

Embodiment 2

[0046] The recycling method of this embodiment is the same as that of Embodiment 1, the difference is that the battery to be recycled is a waste zinc-manganese dry battery, and in step 1) a cutting machine is used to break the battery, and in step 3) the sulfuric acid concentration of the broken battery is dissolved 6mol / L, in step 4), the electrolysis uses a titanium plate as the electrode material of the electrolytic cell.

Embodiment 3

[0048] The recovery method of this embodiment is the same as that of Example 1, the difference is that the batteries recovered are all alkaline zinc-manganese batteries, and the concentration of sulfuric acid for dissolving the broken battery in step 3) is 0.5mol / L, and in step 4) , Electrolysis uses titanium plates as the electrode material of the electrolytic cell.

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Abstract

The invention relates to a recycling method of a waste zinc-manganese battery, comprising the following steps: (1) the battery is broken and electrolyte is recovered; (2) iron and organic matters areseparated from washing broken matters; (3) separated remnants are dissolved by acid; (4) zinc is recovered from filtrate. The method can recycle zinc-manganese dry batteries and basic zinc-manganese batteries, thereby not only solving the environmental-protection problem caused by the waste batteries, but also realizing reclamation of valuable substances in the waste batteries. The process has high economic and social value; in the process flows, the used equipment is simple, and valuable substances have good separation effect, and the generation amount of secondary pollutants in the recyclingprocess is small, harmless treatment can be carried out, and the process has advancement on technology; the process method can be easily applied to scale production. The recycling method is simple, economic and practical, has easy operation and can recycle the waste zinc-manganese battery in a large scale.

Description

technical field [0001] The invention belongs to the technical field of resource recovery and treatment of solid waste, in particular to a recovery and treatment method for waste zinc-manganese batteries such as zinc-manganese dry batteries and alkaline zinc-manganese batteries, and belongs to an innovative technology for recycling and treatment of waste zinc-manganese batteries. Background technique [0002] Batteries have been widely used in many fields of modern society. Especially through the product structure adjustment of the battery industry in recent years, China has become the world's largest battery producer and exporter. In 2008, the sales revenue of the battery industry exceeded 200 billion yuan, the output of chemical batteries exceeded 32 billion, and the export volume exceeded 25 billion. The production of zinc-manganese batteries (including zinc-manganese dry batteries and alkaline zinc-manganese batteries) accounts for about two-thirds of the output. It is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M6/52H01M10/54
CPCY02E60/12Y02W30/84
Inventor 南俊民胡科水方建章成文肖信马国正汤兴城
Owner SOUTH CHINA NORMAL UNIVERSITY
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