Method for producing zinc powder and battery fluid from battery zinc anode waste and battery waste fluid

A technology of zinc anode and battery liquid, which is applied in the production of high-purity branched sheet metal zinc powder and the regeneration of battery waste liquid, can solve the problems of high use cost, difficulty in large-scale development, and large market influence, and achieves stable operation cost and improved Discharge amount, the effect of avoiding environmental pollution

Inactive Publication Date: 2012-06-20
昆明同越科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As far as this kind of battery is concerned, due to the relatively large amount of zinc powder used every day, generally each bus needs to use 500-700 kg of metal zinc powder for 14 hours. The production of...

Method used

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  • Method for producing zinc powder and battery fluid from battery zinc anode waste and battery waste fluid
  • Method for producing zinc powder and battery fluid from battery zinc anode waste and battery waste fluid
  • Method for producing zinc powder and battery fluid from battery zinc anode waste and battery waste fluid

Examples

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Effect test

Embodiment 1

[0024] A method for producing high-metal zinc powder and battery liquid from battery zinc anode waste and battery waste liquid, the steps of which are:

[0025] a. A strong alkaline solution prepared according to the mass ratio of 1 part of NaOH and 99 parts of KOH, the total mass concentration of NaOH and KOH is 20%, to obtain a NaOH / KOH mixed solution;

[0026] b. First measure zinc-air battery waste: NaOH / KOH mixed solution with a solid-to-liquid ratio of 1:2, mix evenly to obtain raw materials, and then stir at 10 degrees Celsius for 3 hours;

[0027] c. Mixing the leaching raw material prepared in step b with the zinc-air battery waste liquid to obtain a zinc-air battery integrated mixed liquid;

[0028] d. The iron, copper, and lead in the zinc-air battery integrated mixed solution prepared in the sulfide purification and separation step c are used to obtain a sulfide purification solution, the sulfide is sodium sulfide, and the amount of sulfide added is calculated ...

Embodiment 2

[0033] A method for producing high-metal zinc powder and battery liquid from battery zinc anode waste and battery waste liquid, characterized in that the steps are as follows:

[0034] a. A strong alkaline solution prepared according to the mass ratio of 99 parts of NaOH and 1 part of KOH, the total mass concentration of NaOH and KOH is 47.7%, to obtain a NaOH / KOH mixed solution;

[0035] b. First measure zinc-air battery waste: NaOH / KOH mixed solution with a solid-to-liquid ratio of 1: 10, mix evenly to obtain raw materials, and then stir at 100 degrees Celsius for 0.1h;

[0036] c. Mixing the leaching raw material prepared in step b with the zinc-air battery waste liquid to obtain a zinc-air battery integrated mixed liquid;

[0037] d. The iron, copper, and lead in the zinc-air battery integrated mixed solution prepared in the sulfide purification and separation step c are used to obtain a sulfide purification solution, the sulfide includes a composition of sodium sulfid...

Embodiment 3

[0042] A method for producing high-metal zinc powder and battery liquid from battery zinc anode waste and battery waste liquid, characterized in that the steps are as follows:

[0043] a. A strong alkaline solution prepared according to the mass ratio of 50 parts of NaOH and 50 parts of KOH, the total mass concentration of NaOH and KOH is 50%, to obtain a NaOH / KOH mixed solution;

[0044] b. First measure zinc-air battery waste: NaOH / KOH mixed solution with a solid-to-liquid ratio of 1:5.5, mix evenly to obtain raw materials, and then stir at 55 degrees Celsius for 2 hours;

[0045] c. Mixing the leaching raw material prepared in step b with the zinc-air battery waste liquid to obtain a zinc-air battery integrated mixed liquid;

[0046] d. The iron, copper, and lead in the zinc-air battery integrated mixed solution prepared in the sulfide purification and separation step c are used to obtain a sulfide purification solution. The sulfide is a composition of potassium sulfide...

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Abstract

The invention discloses a method for producing zinc powder and battery fluid from battery zinc anode waste and battery waste fluid, which relates to the technical field of waste resource regeneration and processing. The method comprises the following steps: (a) 1-99 parts of NaOH and 99-1 parts of KOH are mixed to obtain a strong alkaline solution according to a proportion by weight; (b) NaOH/KOH mixed solution is uniformly mixed at a solid-to-liquid ratio of 1:(2-10) to obtain a leaching material; (c) the leaching material is mixed with zinc-air battery waste fluid to obtain zinc-air battery integrated mixed fluid; (d) sulfide is used for purifying and separating iron, copper and lead to obtain a sulfide purified solution; (e) lime regenerated alkali is used to react with the sulfide purified solution to obtain sodium zincate and potassium zincate solution suitable for electrolysis; (f) the sodium zincate and potassium zincate solution suitable for electrolysis obtained in step (e) is electrolyzed to obtain metal zinc powder; and (g) the lean solution is recycled after the electrolysis. The method of the invention sufficiently utilizes waste resources, and does not cause secondary pollution during the whole production process.

Description

technical field [0001] The invention relates to the technical field of waste resource regeneration treatment, in particular to a method for producing high-purity branch-shaped metal zinc powder from waste resource zinc-air battery zinc anode waste and battery waste liquid and regenerating battery waste liquid. Background technique [0002] Due to the frequent shortage of non-renewable energy such as coal and petroleum, the advent of the post-petroleum era has made people more and more eager to seek, develop and utilize new energy, and the development of the battery power system industry has attracted more and more attention. The invention of "new energy in the 21st century" zinc-air battery has a history of hundreds of years. It is recognized as an excellent energy storage material due to its many advantages such as hidden danger of explosion, abundant resources, and low cost. In 1995, Israel Electric Fuel (ElectricFuel) Co., Ltd. used zinc-air batteries for electric vehicl...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22B3/12C25C1/16C25C5/00C22B19/00
CPCY02P10/20
Inventor 赵由才易天晟朱清渭
Owner 昆明同越科技开发有限公司
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