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Method for treating and utilizing solid waste sludge in lithium battery factory

A waste sludge and lithium battery technology, applied in sludge treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve problems such as environmental pollution and waste of resources, and achieve environmental protection and sustainable development Effect

Inactive Publication Date: 2018-09-28
张家港市永兴建材厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] With the progress of the times, people's demand for lithium batteries has increased. When producing lithium batteries, sludge will be generated. The sludge contains calcium fluoride ions. Now the sludge containing calcium fluoride ions is not tested on the market. processing, resulting in environmental pollution and waste of resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Dilute the solid waste sludge with liquid until the water content reaches 50%.

[0034] (2) Add reducing agent to solid waste sludge. The reducing agent includes lime, charcoal, coke, graphite, coal, preferably lime.

[0035] (3) Fully stir the sludge and reducing agent. Sludge and reducing agent are fully stirred in the stirring tank.

[0036] (4) Insulate at a temperature of 950-1250° C. for 1, and then dry, pulverize, and sieve to become a powder.

[0037] (5) Grinding the stirred solid waste sludge and lime into powder.

[0038] The composition of the liquid in the step (1) includes one or more of alkalis, carbonates or persulfates.

[0039] The proportioning ratio of lime, charcoal, coke, graphite and coal in the step (2) is 5:2:1:1:1.

[0040] The stirring time of the step (3) is guaranteed to be 2 hours, and the pH value is kept greater than 7.

[0041] The crushing in the step (4) is carried out in a pulverizer.

[0042] The powder in the step (5) can...

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PUM

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Abstract

The invention relates to the technical field of sludge treatment, in particular to a method for treating and utilizing solid waste sludge in a lithium battery factory. The method comprises the following steps that (1) the solid waste sludge is diluted with liquid to the state that the water content is 50-60%; (2) a reducing agent is added into the solid waste sludge, wherein the reducing agent includes lime, charcoal, coke, graphite and coal, preferably the lime; (3) the sludge and the reducing agent are fully stirred in a stirring pool; (4) heat preservation is conducted for 1-12 h at 950-1,250 DEG C, and drying, smashing and screening are conducted to form a powdery material; (5) the stirred solid waste sludge and lime are ground into powder. The environment is protected, the solid wastesludge is treated and fully utilized, and the sustainable development is facilitated.

Description

technical field [0001] The invention relates to the technical field of sludge treatment, in particular to a method for treating and utilizing solid waste sludge in a lithium battery factory. Background technique [0002] "Lithium battery" is a type of battery that uses lithium metal or lithium alloy as the negative electrode material and uses a non-aqueous electrolyte solution. In 1912, the lithium metal battery was first proposed and studied by GilbertN.Lewis. In the 1970s, M.S.Whittingham proposed and began to study lithium-ion batteries. Due to the very active chemical properties of lithium metal, the processing, storage and use of lithium metal have very high environmental requirements. Therefore, lithium batteries have not been used for a long time. With the development of science and technology, lithium batteries have become the mainstream now. [0003] Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium ion batteries. ...

Claims

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Application Information

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IPC IPC(8): C02F11/00
CPCC02F11/00
Inventor 季卫康
Owner 张家港市永兴建材厂
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