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Recycling method of waste ternary battery material lithium nickel cobalt manganese

A ternary battery, lithium-nickel-cobalt-manganese technology, which is applied in the field of waste ternary battery recycling and processing, can solve the problems of high energy consumption and water resources, reduce acid and alkali consumption, increase recovery rate, and metal yield high effect

Pending Publication Date: 2021-09-21
四川长虹格润环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, each separation step of this type of technology will consume at least a stoichiometric amount of sodium hydroxide and sulfuric acid, and produce an equal amount of sodium sulfate. All sodium sulfate must be crystallized into by-product yuanming powder, which consumes a lot of energy and water resources.

Method used

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  • Recycling method of waste ternary battery material lithium nickel cobalt manganese
  • Recycling method of waste ternary battery material lithium nickel cobalt manganese
  • Recycling method of waste ternary battery material lithium nickel cobalt manganese

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Raw materials: Waste ternary battery recycling powder model 523, negative electrode powder content 40%, material weight 1000KG.

[0053] Table 1 Composition list of waste ternary batteries

[0054] element Ni co mn Li Cu Al Fe content(%) 20.0 8.0 12.05 4.8 1.0 0.5 0.1

[0055] Sulfuric acid ripening transition to reduction roasting: see Table 2 for process parameters.

[0056] Table 2 Example 1 Sulfuric acid ripening conversion reduction roasting process parameter table

[0057]

[0058] Lithium leaching by alkaline oxidation: See Table 3 for process parameters.

[0059] Table 3 Example 1 Alkaline Oxidation Lithium Immersion Parameter Table

[0060]

[0061] Filtration and washing to obtain lithium sulfate solution and lithium recovery rate are shown in Table 4.

[0062] Table 4 Example 1 Alkaline oxidation lithium leaching result table

[0063]

[0064] Slight acid leaching of nickel and cobalt: see Table 5 for proces...

Embodiment 2

[0077] Raw materials: Waste ternary battery recycling powder model 622, negative electrode powder content 40%, material weight 1000KG.

[0078] Table 9 Composition of waste ternary batteries

[0079] element Ni co mn Li Cu Al Fe content(%) 19.8 6.6 9.9 4.75 1.2 0.7 0.15

[0080] Sulfuric acid ripening transition to reduction roasting: see Table 10 for the process parameters.

[0081] Table 10 Example 2 Sulfuric acid ripening conversion reduction roasting process parameter list

[0082]

[0083] Lithium leaching by alkaline oxidation: See Table 11 for process parameters.

[0084] Table 11 Example 2 Alkaline Oxidation Lithium Immersion Parameter Table

[0085]

[0086] See Table 12 for filtering and washing lithium sulfate solution and lithium recovery rate.

[0087] Table 12 Example 2 Alkaline oxidation lithium leaching result table

[0088]

[0089] Slight acid leaching of nickel and cobalt: see Table 13 for process parameter...

Embodiment 3

[0102] Raw materials: Waste ternary battery recycling powder type 111, negative electrode powder content 40%, material weight 1000KG.

[0103] Table 17 Composition of waste ternary batteries

[0104] element Ni co mn Li Cu Al Fe content(%) 11.0 11.0 11.0 4.6 1.5 0.4 0.3

[0105] Sulfuric acid ripening transition to reduction roasting: See Table 18 for process parameters.

[0106] Table 18 Example 3 sulfuric acid aging conversion reduction roasting process parameter list

[0107]

[0108] Lithium leaching by alkaline oxidation: See Table 19 for process parameters.

[0109] Table 19 Example 3 Alkaline Oxidation Lithium Immersion Parameter Table

[0110]

[0111] See Table 20 for filtering and washing lithium sulfate solution and lithium recovery rate.

[0112] Table 20 Example 3 Alkaline Oxidation Lithium Immersion Result Table

[0113]

[0114] Slight acid leaching of nickel and cobalt: see Table 21 for process parameters.

...

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Abstract

The invention belongs to the technical field of recycling treatment of waste ternary batteries, and particularly relates to a recycling method of a waste ternary battery material lithium nickel cobalt manganese. The technical problem to be solved by the invention is to reduce the consumption of auxiliary materials and improve the metal yield. The method comprises the following steps: a, adding sulfuric acid into the waste ternary battery material, uniformly conducting mixing, and conducting curing and roasting to obtain a roasted material; b, adding water into the roasted material, and carrying out oxidation leaching and solid-liquid separation to obtain solid powder containing nickel, cobalt and manganese and a lithium sulfate solution; c, stirring and mixing the solid powder containing nickel, cobalt and manganese with water, gradually adding an acid d for leaching, conducting heat preservation, and conducting solid-liquid separation to obtain a nickel, cobalt and manganese solution and trivalent solid manganese; and d, sitrring and mixing trivalent solid manganese and water, adding a reducing agent for leaching while an acid is added, and conducting solid-liquid separation to obtain a manganese salt solution. The whole recovery process of the method is low in auxiliary material consumption, high in metal yield and free of environmental pollution.

Description

technical field [0001] The invention belongs to the technical field of recovery and treatment of waste ternary batteries, and in particular relates to a method for recycling waste ternary battery materials lithium nickel cobalt manganese. Background technique [0002] Lithium-ion batteries have high working voltage and energy density, stable discharge voltage, no memory effect, light weight and small size, and are widely used in mobile electronic devices, electric vehicles, power reserve and other fields. Lithium battery cathode materials mainly include lithium cobalt oxide, lithium iron phosphate and ternary composite materials. Among them, ternary batteries have the advantages of high energy density, high voltage, good cycle performance, and safe operation, and are especially suitable for new energy vehicles. Wide application has vigorously promoted the development of new energy vehicles. With the vigorous development of new energy vehicles, on the one hand, the amount of...

Claims

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Application Information

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IPC IPC(8): C01D15/06C01G45/00H01M10/54H01M10/0525C01G53/10C01G51/10
CPCC01D15/06C01G45/00H01M10/54H01M10/0525C01G53/10C01G51/10Y02W30/84Y02E60/10
Inventor 袁茂强李中良刘志东吴建峰戴富书李霞
Owner 四川长虹格润环保科技股份有限公司
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