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Nickel cobalt lithium manganate ternary polymer battery anode waste material recovery method

A technology of nickel-cobalt lithium manganese oxide and ternary polymer, which is applied in the field of positive electrode waste recycling of nickel-cobalt lithium manganese oxide ternary polymer battery, can solve problems such as environmental pollution and waste of resources, and achieve simple process, low cost, Wide recovery effect

Inactive Publication Date: 2018-06-15
浙江格派钴业新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Recycling ternary lithium-ion battery waste can save 51.3% of natural resources, including 45.3% less ore consumption and 57.2% less fossil energy consumption. If necessary recycling is not carried out, it will not only cause waste of resources, but also cause pollution to the environment

Method used

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  • Nickel cobalt lithium manganate ternary polymer battery anode waste material recovery method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) The waste cathode material is slurried with water at 10:1; the reaction temperature is 90°C; the stirring speed is 65rpm; the reaction time is 2h; the reaction process uses H 2 SO 4 Maintain the pH of the solution at 1.0, add Na after 45 minutes of reaction 2 SO 3 , the addition coefficient is 1.4.

[0024] (2) After all the waste materials are completely dissolved, add NaOH to adjust the pH of the solution to 9.0, and continue to stir for 30 minutes. The precipitate is filtered through a plate and frame, and the nickel-cobalt-manganese intermediate product obtained by the filter is used for the adjustment of the iron removal process in the production process of water cobalt ore pH value.

[0025] (3) After the filtered lithium hydroxide solution is further purified by the polymer PE microporous membrane, slowly add 1mol / L of H 3 PO 4 And stir, the solution temperature is 72°C, use liquid caustic soda to control the final pH of the solution to 10, continue to s...

Embodiment 2

[0027] (1) The waste cathode material is slurried with water at 11:1; the reaction temperature is 85°C; the stirring speed is 70rpm; the reaction time is 2.2h; the reaction process uses H 2 SO 4 Keep the pH of the solution at 1.0, and add Na after 50 minutes of reaction 2 S 2 o 3 , the addition coefficient is 1.3.

[0028] (2) After all the waste materials are completely dissolved, add NaOH to adjust the pH of the solution to 9.5, and continue to stir for 30 minutes. The sediment is filtered through a plate and frame, and the nickel-cobalt-manganese intermediate product obtained by the filter is used for the adjustment of the iron removal process in the production process of water cobalt ore pH value.

[0029] (3) After the filtered lithium hydroxide solution is further purified by the polymer PE microporous membrane, slowly add 1.2mol / L of H 3 PO 4 And stir, the solution temperature is 70°C, use liquid caustic soda to control the final pH of the solution to 10, continue...

Embodiment 3

[0031] (1) The waste cathode material is slurried with water at 10:1; the reaction temperature is 95°C; the stirring speed is 75rpm; the reaction time is 2h; the reaction process uses H 2 SO 4 Keep the pH of the solution at 1.0, and add Na after 40 minutes of reaction 2 S 2 o 5 , the addition coefficient is 1.3.

[0032](2) After all the waste materials are completely dissolved, add NaOH to adjust the pH of the solution to 9.0, and continue to stir for 45 minutes. The precipitate is filtered through a plate and frame, and the nickel-cobalt-manganese intermediate product obtained by the filter is used for the adjustment of the iron removal process in the water cobalt ore production process. pH value.

[0033] (3) After the filtered lithium hydroxide solution is further purified by the polymer PE microporous membrane, slowly add 1.4mol / L of H 3 PO 4 And stir, the solution temperature is 80°C, use liquid caustic soda to control the final pH of the solution to 10, continue t...

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Abstract

The invention discloses a nickel cobalt lithium manganate ternary polymer battery anode waste material recovery method. A recovered nickel cobalt lithium manganate battery anode waste material is slurried, is subjected to reduction leaching under acidic condition, alkali lye is used for adjusting a pH value to deposit nickel cobalt manganese, press filtration is carried out to obtain a nickel cobalt manganese intermediate, the intermediate is used for adjusting the pH value during an iron removal process in a heterogenite production process, which can substitute addition of sodium carbonate during the iron removal process; a filtered lithium hydroxide solution is subjected to further purifying through a high-molecular PE microporous membrane, a phosphoric acid solution is slowly added, thealkali lye is used for controlling the pH value of the solution, and a reaction product is subjected to aging, centrifugation filtering, washing with pure water and microwave drying to obtain the micron-level lithium phosphate.

Description

technical field [0001] The invention relates to a method for recycling positive electrode waste of a nickel-cobalt lithium manganate ternary polymer battery, and belongs to the technical fields of secondary resource recycling and circular economy. Background technique [0002] Under the double pressure of environmental pollution and energy crisis, finding clean and green energy is the direction of the world's common efforts. Lithium-ion batteries play an important role in clean energy, especially for cars powered by lithium-ion batteries, which have developed rapidly in recent years and have proposed a new development path for global energy and environmental issues. [0003] Lithium-ion batteries have a variety of cathode materials, layered LiCoO 2 It is currently the main commercial lithium-ion battery cathode material, and its comprehensive performance is excellent, but its high cost restricts its large-scale application; LiNiO 2 The crystal is layered salt rock structur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/54C22B3/00C22B7/00C22B47/00
CPCC22B7/007C22B23/043C22B47/00H01M10/54Y02P10/20Y02W30/84
Inventor 龚丽锋曹栋强王向阳杨扬赵美平
Owner 浙江格派钴业新材料有限公司
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