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Method for removing impurity ions in waste lead-acid storage battery electrolyte

A technology for lead-acid batteries and impurity ions, applied in separation methods, chemical instruments and methods, filtration and separation, etc., can solve the problems of waste of sulfuric acid resources, high energy consumption, etc., achieve low energy consumption, simple operation, and easy large-scale industrialization The effect of promotion

Inactive Publication Date: 2018-05-29
骆驼集团蓄电池研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] (1) The method of electrolysis is used to make Fe 3+ 、Cu 2+ Transform into elemental iron and elemental copper, but this method consumes a lot of energy;
[0005] (2) Alkaline neutralization precipitation method is used to make Fe 3+ 、Cu 2+ It is removed in the form of sediment, but this method will waste a lot of sulfuric acid resources

Method used

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  • Method for removing impurity ions in waste lead-acid storage battery electrolyte
  • Method for removing impurity ions in waste lead-acid storage battery electrolyte

Examples

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Embodiment 1

[0024] Impurity ion Fe in a kind of spent lead-acid battery electrolyte 3+ The removal method consists of the following steps:

[0025] (1) Filter 1200mL of waste lead-acid battery electrolyte through a sand funnel filled with 10g of activated carbon;

[0026] (2) Prepare an organic reagent with an extractant X content of 1 mol / L: Weigh a quantitative amount of extractant X into a 250mL volumetric flask, then slowly add 260# solvent oil to constant volume, mix well and set aside;

[0027] (3) Take 100mL of the filtrate obtained in step (1), add an equal volume of organic reagent obtained in step (2), and stir thoroughly for 20 minutes;

[0028] (4) After stirring, pour all the liquid in step (3) into a 250mL separatory funnel and let it stand for 10 minutes;

[0029] (5) After the organic phase and the acid phase are completely separated, separate the lower acid phase, and take 10 mL for inspection. The remaining acid phase was poured back into the container, and an equal v...

Embodiment ２

[0031] Impurity ion Fe in a kind of spent lead-acid battery electrolyte 3+ The removal method consists of the following steps:

[0032] (1) Filter 1200mL of waste lead-acid battery electrolyte through a sand funnel filled with 10g of activated carbon;

[0033] (2) Prepare an organic reagent with an extractant X content of 1.5 mol / L and an extractant Y content of 0.5 mol / L: Weigh a certain amount of extractant X and Y into a 250mL volumetric flask, and then slowly add 260# solvent oil Constant volume, mix well and set aside;

[0034] (3) Take 100mL of the filtrate obtained in step (1), add an equal volume of organic reagent obtained in step (2), and stir thoroughly for 20 minutes;

[0035] (4) After stirring, pour all the liquid in step (3) into a 250mL separatory funnel and let it stand for 10 minutes;

[0036] (5) After the organic phase and the acid phase are completely separated, separate the lower acid phase, and take 10 mL for inspection. The remaining acid phase was ...

Embodiment ３

[0038] Impurity ion Cu in electrolyte solution of a kind of waste lead-acid battery 2+ The removal method consists of the following steps:

[0039] (1) Filter 1200mL of waste lead-acid battery electrolyte through a sand funnel filled with 10g of activated carbon;

[0040] (2) Prepare an organic reagent with an extractant Y content of 1 mol / L: Weigh a certain amount of extractant Y into a 250mL volumetric flask, then slowly add 260# solvent oil to the volume, mix well and set aside;

[0041] (3) Take 100mL of the filtrate obtained in step (1), add an equal volume of organic reagent obtained in step (2), and stir thoroughly for 20 minutes;

[0042] (4) After stirring, pour all the liquid in step (3) into a 250mL separatory funnel and let it stand for 10 minutes;

[0043] (5) After the organic phase and the acid phase are completely separated, separate the lower acid phase, and take 10 mL for inspection. The remaining acid phase was poured back into the container, and an equal...

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Abstract

The invention relates to a method for removing impurity ions in waste lead-acid storage battery electrolyte, and belongs to the technical field of liquid phase extraction. Impurity removal is implemented by liquid phase extraction. An organic reagent for extraction consists of the following components: 260# solvent oil and an extracting agent with the concentration being 0.5-1.5 mol / L, and the liquid phase is the waste lead-acid storage battery electrolyte. The extracting agent is one or a combination of an extracting agent X and an extracting agent Y. By the method provided by the invention,on the premise of not consuming a large number of electric energy or wasting a large number of sulfur resources, impurity ions Fe3+ and Cu2+ in the waste lead-acid storage battery electrolyte are removed effectively. The method for removing the impurity ions in the waste lead-acid storage battery electrolyte has the advantages of low energy consumption, simplicity in operation, easiness in large-scale industrialized popularization and the like.

Description

technical field [0001] The invention belongs to the technical field of recovery and treatment of waste lead-acid batteries, and relates to an impurity ion Fe in the electrolyte of waste lead-acid batteries. 3+ and Cu 2+ removal method. Background technique [0002] The main component of the waste lead-acid battery electrolyte is a dilute sulfuric acid solution with a mass fraction of about 30% to 40%. It is a heavy metal lead and contains various metal impurity ions Fe. 3+ 、Cu 2+ Toxic waste liquid of various trace inorganic components and organic components such as oil. Due to Fe 3+ 、Cu 2+ It will lead to "self-discharge" phenomenon in lead-acid batteries, so the electrolyte of waste lead-acid batteries cannot be directly recycled and reused. After the used battery is disassembled, the electrolyte inside is often dumped randomly, which brings great hidden dangers to the environment. [0003] At present, in the industry, Fe in the electrolyte of waste lead-acid batter...

Claims

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Application Information

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IPC IPC(8): B01D11/04B01D36/00
CPCB01D11/04B01D11/0492B01D36/00B01D36/008
Inventor 聂斌斌张兴张祖波夏诗忠刘道坦王倩刘长来
Owner 骆驼集团蓄电池研究院有限公司