Method and device for recycling metal in waste lithium ion batteries by water-soluble ionic liquid

A technology of lithium-ion batteries and ionic liquids, which is applied in the field of water-soluble ionic liquids to recycle metals in waste lithium-ion batteries, can solve problems such as retention, no complete set of commercial operation processes, and weak research on recycling processes

Active Publication Date: 2013-09-18
苏州清咨威特环保科技有限公司
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Problems solved by technology

[0005] In the treatment process of waste lithium-ion batteries, the discharge and deep resource utilization have been more researched and used, and the recycling pro

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  • Method and device for recycling metal in waste lithium ion batteries by water-soluble ionic liquid
  • Method and device for recycling metal in waste lithium ion batteries by water-soluble ionic liquid
  • Method and device for recycling metal in waste lithium ion batteries by water-soluble ionic liquid

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] Such as figure 1 Shown, a kind of water-soluble ionic liquid of the present invention reclaims the method for metal in the waste lithium ion battery, comprises the steps:

[0024] Step 1: Put the spent lithium-ion battery in salt water for discharge treatment, and then dry it;

[0025] Step 2: Manually disassemble and separate the discharged waste lithium-ion battery to obtain the anode, cathode, diaphragm and the shell containing the circuit board, and separate and classify them. The anode is copper foil and negative electrode material carbon, and the cathode is aluminum foil and Cathode material;

[0026] Step 3: Put [BMIm]BF 4 The ionic liquid was placed in an oil bath, heated to 175°C, and stirred with an electric mixer, and the speed of the electric mixer was controlled at 300rpm;

[0027] Step 4: Add the anode and cat...

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Abstract

The invention discloses a method and a device for recycling metal in waste lithium ion batteries by water-soluble ionic liquid. The method comprises the steps that: (1) a waste lithium ion battery is subjected to electricity discharge treatment; (2) after the electricity discharge, the waste lithium ion battery is disassembled and separated manually so as to obtain an anode, a cathode, a diaphragm and a shell containing a circuit board, and the anode, the cathode, the diaphragm and the shell containing the circuit board are separated and sorted; (3) the water-soluble ionic liquid is heated in an oil bath and is stirred by an electric mixer; (4) the anode and the cathode which are separated are added into the oil bath respectively and stay in the oil bath for 25 minutes for performing the separation of a negative material and a copper foil and the separation of a positive material and an aluminum foil; (5) after the water-soluble ionic liquid in the oil bath is cooled, the aluminum foil and the copper foil which are separated are taken out and washed; (6) the cooled water-soluble ionic liquid is filtered and the positive material and the negative material are separated and washed. The device comprises the oil bath which is capable of performing automatic temperature control and the electric mixer, wherein the electric mixer is inserted in the oil bath and the rotation speed of the electric mixer is adjustable. The method and the device have the characteristics of high disassembly efficiency, high recycling purity of valuable metal and the positive material and environment friendliness.

Description

technical field [0001] The invention relates to the technical field of recycling electronic waste, in particular to a method and a device for recovering metals in waste lithium-ion batteries with a water-soluble ionic liquid. Background technique [0002] The current widespread use of consumer electronics (including laptops, mobile phones, and tablets, etc.) and the acceleration of their replacement have brought about the generation of a large number of waste lithium-ion batteries; at the same time, the development of electric vehicles is in the ascendant, and the huge market and demand will inevitably lead to a large amount of waste. Generation of lithium-ion batteries. It is predicted that the output of waste lithium-ion batteries will reach 500,000 tons in 2020. In addition, like general electronic waste, waste lithium-ion batteries also have dual characteristics of resource and hazard. This type of waste contains high-grade copper, aluminum valuable metals and high-val...

Claims

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Application Information

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IPC IPC(8): H01M10/54
CPCY02W30/84
Inventor 李金惠曾现来
Owner 苏州清咨威特环保科技有限公司
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