Full-wet recovery process of waste lithium batteries

A waste lithium battery, all-wet technology, applied in the direction of battery recycling, waste collector recycling, recycling technology, etc., can solve the problems of high waste gas treatment pressure, cumbersome process flow, high equipment investment, etc. Short, low equipment investment effect

Active Publication Date: 2020-01-24
HUNAN YACHENG NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of this method is that it can recover all components of waste ternary batteries, and the recovery rate of metal elements is high. However, its disadvantage is that the process is too cumbersome; additional products: low value of plastic, steel shell, aluminum, copper; production line Too long, high investment in equipment; high pressure on waste gas treatment

Method used

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  • Full-wet recovery process of waste lithium batteries

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Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1 of the present invention is: a kind of all-wet recycling process of waste lithium battery, such as figure 1 As shown, it specifically includes the following steps:

[0039] (1) Add 1.5kg of water to the spray water storage tank, turn on the spray water, and put 100 waste soft-packed ternary (nickel-cobalt-manganese) lithium-ion batteries weighing about 31.11g / piece into the shredder for the second stage Crushing, the particle size of the crushed material is about 0.1-2cm, the crushed material enters the receiving bin with the spray water, removes the plastic and diaphragm floating above the liquid level of the receiving bin tank, and the spray water collected in the tank Perform reflux spraying according to the reflux ratio of 0.1:1.

[0040] (2) The material in the receiving bin of the crusher is transferred to the reaction kettle by the screw elevator and the water pump, the stirring tank rotating speed is 300r / min, and the reaction temperature is 20°C, ...

Embodiment 2

[0045] Embodiment 2 of the present invention is: an all-wet recovery process for waste lithium batteries, specifically comprising the following steps:

[0046] (1) Add 0.88kg of water to the spray water storage tank, turn on the spray water, and put 100 waste cylindrical 18650 ternary lithium (nickel-cobalt-manganese) ion batteries with a weight of about 44g / piece into the shredder for the second stage Crushing, the particle size of the crushed material is about 0.1-5cm, the crushed material enters the receiving bin with the spray water, removes the plastic and diaphragm floating above the liquid level of the receiving bin tank, and the spray water collected in the tank Perform reflux spraying according to the reflux ratio of 0.5:1.

[0047] (2) Transfer the material in the receiving bin of the crusher to the reaction kettle through the screw elevator and the water pump. The rotation speed of the stirring tank is 600r / min, the reaction temperature is 60°C, and the speed is 0.7...

Embodiment 3

[0052] Embodiment 3 of the present invention is: a full-wet recovery process of waste lithium batteries, specifically comprising the following steps:

[0053] (1) Add 2.5kg of water into the spray water storage tank, turn on the spray water, put 100 waste lithium cobaltate soft pack batteries weighing about 50g / each into the shredder for secondary crushing, and the crushed The particle size of the material is about 0.1-5cm. The broken material enters the receiving bin with the spray water to remove the plastic and diaphragm floating above the liquid level of the tank in the receiving tank. The spray water collected in the tank is carried out according to the reflux ratio of 0.2:1. Backflow spray.

[0054] (2) The material in the crusher receiving bin is transferred to the reaction kettle by the screw elevator and the water pump, the stirring tank rotating speed is 400r / min, and the reaction temperature is 30°C, and 12.25kg nitric acid (wt%) is added in 4h =68%), carry out lea...

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Abstract

The invention discloses a full-wet recovery process of waste lithium batteries. The full-wet recovery process comprises the following steps of wet charged crushing, direct leaching of battery scraps,in-situ impurity removal of leachate, deep impurity removal, material re-preparation and the like. The process can realize recovery of waste lithium ion batteries through a short process, and has theadvantages of high recovery rate of nickel, cobalt, manganese and lithium element, low equipment investment, small waste gas and waste water yield and the like.

Description

technical field [0001] The invention relates to the technical field of battery recycling, in particular to a full wet recycling process for waste lithium batteries. Background technique [0002] Lithium-ion batteries have been used more and more widely since they became commercially available in the early 1990s. Today, lithium-ion batteries are found in virtually everything from laptops and mobile phones to electric vehicles and energy storage devices. What followed was an alarming increase in the number of discarded lithium-ion batteries. The recycling of valuable resources in waste lithium batteries is of great significance both in terms of environmental protection and resource recycling. Some studies predict that by 2030, the global scrapped lithium-ion batteries will reach more than 11 million tons. Therefore, the recycling market of lithium-ion batteries has a bright future. [0003] The current recycling of waste lithium batteries is mainly aimed at the recycling of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B23/00C22B26/12C22B47/00H01M10/54
CPCC22B7/006C22B7/007C22B23/0415C22B23/0461C22B26/12C22B47/00H01M10/54Y02W30/84Y02P10/20
Inventor 刘志成万文治张洲辉王玉龙颜志雄廖扬青
Owner HUNAN YACHENG NEW MATERIAL CO LTD
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