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Method of recycling electrode metal material from waste lithium titanate battery

A lithium titanate battery and recycling technology, applied in the field of lithium batteries, can solve problems such as difficult extraction process, and achieve the effects of recycling, high economic benefit, and avoiding environmental pollution.

Active Publication Date: 2020-01-31
浙江遨优动力系统有限公司
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Benefits of technology

This technology allows us reuse or re-use spent Lithium Titanates (LTO) from various sources like used cars that have been discarded after use over time without causing harmful side effects on our ecosystem. It also helps reduce costs by reducing disposal issues associated with LMO's production processes.

Problems solved by technology

This patented technical problem addressed by this patents relates to finding ways to recover valuable metallic elements from waste laminated platy ceramics (LPCs) containing these rare earth element(s). Layered plate structures made up mostly of different types of oxides have been found to be effective at storing lithiating reagents during charging cycles due to their ability to store large amounts of electrical charge without losing effectiveness over time. However, there may still remain certain residual quantities that cannot be recovered effectively through traditional methods like acid leaching processes.

Method used

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  • Method of recycling electrode metal material from waste lithium titanate battery

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Embodiment 1

[0028] See attached figure 1 , the recycling of valuable metals in the waste lithium titanate battery includes the following steps:

[0029] Step (1), roasting, roasting the waste lithium titanate pole piece at 600°C for 8 hours, and controlling the heating rate to 5°C / min;

[0030]Step (2), acid leaching, according to the ratio of solid to liquid 1: 8, the roasted product is put into HCl and H with a molar ratio of 1: 5 and a total concentration of 10 mol / L. 2 o 2 Mix the acid solution, control the temperature at 95° C., stir for 3 hours, and filter to obtain the first filtrate containing mixed salts of Li, Ti, Ni, Co, Mn, and Al.

[0031] Step (3), except Al 3+ , slowly add solid Na to the first filtrate 2 CO 3 Adjust the pH value of the powder to 3.0, the temperature is 80°C, and react for 3 hours to remove Al 3+ , and filtered to obtain the second filtrate.

[0032] Step (4), reclaim Li + , dilute the tributyl phosphate extractant with methyl isobutyl ketone to a c...

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Abstract

The invention relates to a method of recycling an electrode metal material from a waste lithium titanate battery. The method comprises the following steps: step (1) roasting; step (2) acid leaching; step (3) removing Al3<+>; step (4) recovering Li<+>; step (5) recovering and preparing a cathode material; step (6) recovering and preparing an anode material; and step (7) preparing the lithium titanate battery. By taking the waste lithium titanate battery as a raw material to be recycled, environmental pollution is avoided, and meanwhile, the economical benefit is high. The method employing conventional equipment is simple in process flow, easy to control, simple and feasible and green and environmental-friendly, has economical benefits and value, can remove part of impurity elements, and recycles part of metals of a lithium battery.

Description

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Claims

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Application Information

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Owner 浙江遨优动力系统有限公司
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