Method for recycling waste cathode materials of lithium battery

A cathode material and lithium battery technology, which is applied in the field of resource utilization of waste cathode materials of lithium batteries, can solve the problems of difficult impurity removal and low process efficiency, and achieve the effects of high solution quality, easy impurity removal and purification, and less impurities.

Active Publication Date: 2019-04-05
尤尼瑞克科技(成都)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a method for recycling waste positive electrode

Method used

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  • Method for recycling waste cathode materials of lithium battery
  • Method for recycling waste cathode materials of lithium battery
  • Method for recycling waste cathode materials of lithium battery

Examples

Experimental program
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Example Embodiment

[0062] Example 1

[0063] A method for resource utilization of waste cathode materials of lithium batteries includes the following steps:

[0064] (1) Preparation of liquid-solid reaction components: mix 10kg of crushed and 80-mesh waste cathode material powder with 1kg of cobalt powder to obtain 11kg of solid components; mix the obtained solid components with 25L of steam condensed water to make slurry , And after stirring evenly, add 500 mL of 30% hydrogen peroxide to obtain the liquid-solid reaction components that meet the requirements;

[0065] (2) Preparation of gas phase reaction components: mix sulfur dioxide, sulfur trioxide, nitrogen monoxide, nitrogen dioxide and oxygen in a volume ratio of 1:0.5:1:1.5:2.4 to obtain the required sulfur dioxide, three Gas-phase reaction components mixed with sulfur oxide, nitrogen monoxide, nitrogen dioxide and oxygen;

[0066] (3) Three-phase one-step reaction: the liquid-solid phase reaction components obtained in step (1) and the gas-pha...

Example Embodiment

[0074] Example 2

[0075] A method for resource utilization of waste cathode materials of lithium batteries includes the following steps:

[0076] (1) Preparation of liquid-solid reaction components: 10kg of waste cathode material powder crushed and passed through a 100-mesh sieve was mixed with 0.8kg manganese powder and 0.2kg cobalt powder to obtain 11kg solid components; the obtained solid phase components were mixed with 50L The steam condensed water is mixed to make slurry, and after stirring evenly, 450 mL of 28% hydrogen peroxide is added to obtain the liquid-solid reaction components that meet the requirements;

[0077] (2) Preparation of gas-phase reaction components: pass the exhaust gas containing sulfur dioxide concentration of 10%, nitric oxide concentration of 1%, and oxygen concentration of 10% into the catalytic reactor to convert part of sulfur dioxide and nitric oxide into three Sulfur oxide and nitrogen dioxide to obtain a mixed gas with a sulfur dioxide concentra...

Example Embodiment

[0086] Example 3

[0087] A method for resource utilization of waste cathode materials of lithium batteries includes the following steps:

[0088] (1) Mixing of liquid-solid reaction components: 20 kg of waste cathode material powder crushed and passed through a 120-mesh sieve is mixed with 0.5 kg of cobalt powder, 0.5 kg of manganese powder and 0.5 kg of nickel powder to obtain 21.5 kg of solid components; The solid phase components are mixed with 50L steam condensed water to make slurry. After stirring evenly, 600mL of 28% hydrogen peroxide is added to obtain the liquid-solid reaction components that meet the requirements;

[0089] (2) Preparation of gas phase reaction components: add 1% sulfur trioxide gas to the exhaust gas containing 10% sulfur dioxide concentration, 0.9% nitrogen monoxide concentration, 0.1% nitrogen dioxide concentration, and 10% oxygen concentration. Obtain a mixed gas of sulfur dioxide, sulfur trioxide, nitrogen monoxide, nitrogen dioxide and oxygen;

[0090...

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Abstract

The invention discloses a method for recycling the waste cathode materials of a lithium battery. The method comprises the following steps: (1) preparing a liquid-solid mixed component system; (2) preparing a gas-phase component; (3) performing a three-phase one-step reaction; (4) performing solid-liquid separation; (5) purifying a leaching liquid; (6) preparing a nickel-cobalt-manganese precursor;(7) recovering lithium resources; (8) preparing a new ternary cathode material; (9) recovering ammonia; and (10) recovering sodium. The unique three-phase one-step reaction system provided by the method can realize that the waste cathode material having any component can obtain high cobalt-nickel-manganese-lithium one-step reaction leaching efficiency.

Description

technical field [0001] The invention belongs to the technical field of lithium battery materials, and in particular relates to a method for recycling waste positive electrode materials of lithium batteries. Background technique [0002] As an energy storage product, lithium-ion batteries are widely used in electric tools, electric vehicles, mobile phones, notebook computers and other fields, and play an important role in people's production and life. In recent years, the high demand for energy storage products has led to an increase in the production of lithium-ion batteries year by year. After repeated charging and discharging of lithium-ion batteries during use, the electrode material will be separated from the current collector after repeated expansion and contraction, resulting in poor contact. At the same time, the crystal form of the positive electrode material will also change during repeated charging and discharging, which will cause Some lithium ions cannot be free...

Claims

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Application Information

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IPC IPC(8): H01M10/54C22B7/00C22B23/00C22B26/12C22B47/00
CPCC22B7/00C22B23/0407C22B26/12C22B47/0054H01M10/54Y02P10/20Y02W30/84
Inventor 邹廷军任燕
Owner 尤尼瑞克科技(成都)有限公司
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