Method for recycling valuable metals from waste lithium ion batteries and/or other materials

A lithium-ion battery and valuable metal technology, applied in the field of resources and the environment, can solve problems such as complex process, depletion, and inability to directly discard slag, and achieve the effect of simplified process and efficient recovery

Active Publication Date: 2014-01-22
CHANGSHA RES INST OF MINING & METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This process has the advantages of being able to process various types of battery waste and avoiding safety explosions and environmental pollution risks in ...

Method used

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  • Method for recycling valuable metals from waste lithium ion batteries and/or other materials
  • Method for recycling valuable metals from waste lithium ion batteries and/or other materials

Examples

Experimental program
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Effect test

Embodiment 1

[0052] The waste and old steel shell lithium ion battery, limestone, silica and metallurgical coke are mixed to obtain a mixed material, wherein, the limestone of 23.7wt%, the silica of 17.3wt%, and the metallurgical coke of 12wt% are mixed; in the mixed material, CaO / SiO 2 =1.3.

[0053] Put the mixed material into the shaft furnace at a speed of 300kg / h for reduction smelting, the melting temperature is 1450°C, the melting time is 60min, and the flue gas temperature at the top of the furnace is 450°C. After the slag is completely separated from the alloy melt, the superalloy and the slag are released from the alloy port and the slag outlet respectively to obtain Cu-Co-Ni alloy and slag.

[0054] Among the produced alloys, the recoveries of Cu, Co and Ni were 96.9%, 98.1% and 96.8%, respectively; Cu, Co and Ni contained in the slag were 0.35wt%, 0.31wt% and 0.05wt%, respectively. The results show that the present invention reduces the content of valuable metals in slag whi...

Embodiment 2

[0056] The waste steel shell lithium ion battery, copper slag (Cu1wt%, TFe42wt%), nickel slag (Cu0.2wt%, Ni0.35wt%, TFe44wt%), cobalt slag (Cu3wt%, Co3.5wt%, TFe42wt%), Limestone and metallurgical coke are mixed, obtain mixed material, wherein, by the copper slag of 10.4wt%, the cobalt slag of 6.9wt%, the nickel slag of 17.3wt%, the limestone of 21.7wt%, the metallurgical coke of 9wt% are mixed; In mixed materials, CaO / SiO 2 =1.3.

[0057] The mixed material was put into the shaft furnace at a rate of 300kg / h for reduction smelting, the smelting temperature was 1450°C, the smelting time was 60min, and the flue gas temperature at the top of the furnace was 450°C. After the slag is completely separated from the alloy melt, the superalloy and the slag are released from the alloy port and the slag outlet respectively to obtain Cu-Co-Ni alloy and slag.

[0058] Among the produced alloys, the recoveries of Cu, Co and Ni were 97.1%, 96.9% and 96.0%, respectively; Cu, Co and Ni cont...

Embodiment 3

[0060] Mix waste and old aluminum case lithium-ion batteries, copper slag (Cu1wt%, TFe42wt%) and limestone to obtain a mixed material, wherein, mix 49.8wt% copper slag and 25.4wt% limestone; in the mixed material, CaO / SiO 2 =1.3.

[0061]Put the mixed material into the shaft furnace at a speed of 300kg / h for reduction smelting, the melting temperature is 1450°C, the melting time is 60min, and the flue gas temperature at the top of the furnace is 450°C. After the slag is completely separated from the alloy melt, the superalloy and the slag are released from the alloy port and the slag outlet respectively to obtain Cu-Co-Ni alloy and slag.

[0062] Among the produced alloys, the recoveries of Cu, Co and Ni were 95.8%, 97.0% and 95.2%, respectively; Cu, Co and Ni contained in the slag were 0.45wt%, 0.41wt% and 0.10wt%, respectively. The results show that the present invention reduces the content of valuable metals in slag while realizing efficient recovery of valuable metals. ...

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Abstract

The invention provides a method for recycling valuable metals from waste lithium ion batteries and/or other materials. The method comprises the following steps that the waste lithium ion batteries and/or the other materials, metallurgical coke and fluxing agents and/or waste containing one or more of Cu, Co and Ni are mixed to obtain mixed materials; the metallurgical coke accounts for 0-20wt % of the mixed materials, and CaO/SiO2 is equal to or higher than 1, or (CaO +MgO)/SiO2 is equal to or higher than 1 in the mixed materials; the mixed materials are subjected to reduction smelting under the temperature of 1400-1600 DEG C, and alloy containing valuable metals and slags are obtained. According to the method, alkaline slags are adopted for smelting, efficient recycling of valuable metals can be achieved, and the amount of valuable metals in slags is reduced.

Description

technical field [0001] The invention relates to the technical field of resources and environment, in particular to a method for recovering valuable metals from waste lithium ion batteries and / or materials thereof. Background technique [0002] Since its commercialization in 1990, lithium-ion batteries have been widely used in communication electronic products such as mobile phones and notebook computers, as well as various electronic instruments and in power tools. As a major producer and consumer of lithium-ion batteries in the world, my country's total output of lithium-ion batteries reached 4 billion in 2012 alone. With the rapid popularization of modern electronic communication equipment and the development of the electric vehicle industry, the consumption of secondary batteries has increased sharply, and a large number of waste lithium-ion batteries will be produced. On the one hand, waste lithium-ion batteries contain more valuable metals such as cobalt, nickel, and ...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22B15/00C22B23/00
CPCY02P10/20
Inventor 肖松文谢美求任国兴唐三川陈坚潘炳夏星
Owner CHANGSHA RES INST OF MINING & METALLURGY
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