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Zinc material for environment protection battery and its manufacturing method

A battery and environmental protection technology, applied in the electrodes, battery electrodes, circuits of primary batteries, etc., can solve the problems that zinc-manganese batteries do not really meet the requirements of environmental protection and cannot be achieved, so as to reduce harm to human beings and reduce intergranular Corrosion, the effect of improving corrosion resistance

Inactive Publication Date: 2008-08-27
广东绿量电池材料科技股份有限公司
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Problems solved by technology

[0014] From the analysis of the above indicators, we know that the P-type batteries we produce now have to add 0.45% of heavy metal lead to meet their composition requirements, which cannot meet the EU ROHS directive 2002 / 95 / EO to limit lead and its compounds to harmful substances <1000PPM ( 0.1%) indicators, so the zinc-manganese batteries produced now have not really met the requirements of environmental protection

Method used

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  • Zinc material for environment protection battery and its manufacturing method
  • Zinc material for environment protection battery and its manufacturing method
  • Zinc material for environment protection battery and its manufacturing method

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Embodiment Construction

[0031] The zinc material for environment-friendly battery of the present invention is in pure zinc (its impurity content weight ratio Pb≤0.03%, Cd≤0.001%, Fe≤0.003%, Cu≤0.001%), add Mg, Al, Ti, wherein: Mg ≤0.0015%, Al<0.02%, Ti<0.05%; among them, Mg is used to replace the Cd added in the zinc material for the primary battery, and Al and the rare element Ti are used to replace the Pb added to the existing battery zinc material.

[0032] The manufacturing method of above-mentioned battery zinc material, its operation steps are as follows:

[0033] a. Prepare Zn-Mg-Al-Ti alloy;

[0034] b. Heating and melting the above alloy on a flame type reverberatory furnace, and then stirring to remove slag;

[0035] c. Add intermediate alloying elements;

[0036] d. Sampling, analysis and testing in front of the furnace, after all indicators meet the standards;

[0037] e. Using the wheel-type casting method, the coil is rolled by using a two-roller single stand;

[0038] f. Install qu...

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Abstract

The invention discloses zinc materials for making batteries which is consisted of (weight percentage): Pb <=0.03úÑú¼Cd<=0.001úÑú¼Fe<=0.003úÑú¼Cu<=0.001úÑú¼Mg<=0.0015úÑú¼ Al<0.02úÑú¼Ti<0.05úÑ. The invention also discloses the method for making the zinc materials that comprises the steps of: a. preparing Zn-Mg-Al-Ti alloy; b. heating and melting said alloy on flame furnace, mixing and deslagging; c. adding middle alloy elements; d. sampling and analyzing each index; e. if meeting requirement, exploiting wheeled casting method, using two roll devices drawing winding; installing acceptable windings on the punched products; g. producing zinc belt to meet requirement.

Description

technical field [0001] The invention relates to a novel environment-friendly lead-free zinc material for batteries and a manufacturing method thereof. Background technique [0002] my country began to develop and produce battery zinc flakes and zinc granules in the 1950s. The current national standard is GB / T 3610-1997. Its chemical composition: Cd 0.03-0.06%, Pb 0.35-0.80%, Fe 0.015%, Cu 0.002%, Sn 0.003%, the sum of impurities 0.025%, and the rest is Zn; the national standard for battery zinc sheet is GB 1978-88, and its chemical composition XD1: Fe 0.011%, Cd 0.20-0.35%, Pb 0.30-0.50% , Cu 0.002%, Sn 0.002%, the sum of impurities 0.02%, and the rest are Zn; XD2: Fe0.008~0.015%, Cd 0.03~0.06%, Pb 0.35~0.80%, Cu 0.002%, Sn 0.003% of impurities 0.0025%, and the remaining content is Zn. The battery produced with the above-mentioned material is called C-type battery on the market. Because the dielectric used in the production of this battery is ammonium chloride, it is easy to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/42H01M4/66H01M4/08C22C18/00
CPCY02E60/12
Inventor 林良智
Owner 广东绿量电池材料科技股份有限公司
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