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Method for recycling nickel, cobalt and manganese synchronously from waste residues containing nickel, cobalt and manganese

A nickel-cobalt-manganese and waste slag technology, which is applied in the field of environmental protection and resource recycling, and can solve the problem of high cost of raw materials

Active Publication Date: 2017-01-11
JINGMEN GEM NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the influence of magnesium impurities, nickel, cobalt, manganese and magnesium need to be separated first, so the cost of raw materials is relatively high

Method used

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  • Method for recycling nickel, cobalt and manganese synchronously from waste residues containing nickel, cobalt and manganese

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Embodiment 1

[0066] See figure 1 In the process flow diagram, a method for synchronously reclaiming nickel-cobalt-manganese from nickel-cobalt-manganese waste slag is provided in the present embodiment one, comprising the following steps:

[0067] (1) Sulfuric acid leaching: take the waste residue containing nickel, cobalt and manganese, which comes from waste batteries, manganese liquid purification residue, low-grade laterite ore and other mixtures; add the mass fraction according to the solid-liquid ratio of 100:1g / L Carry out acid leaching for 30% sulfuric acid solution, the temperature of acid leaching is 50°C, the time of acid leaching is 30min, the pH at the end of leaching is controlled to be 1.0, the solid and liquid are separated by filtration, and the leachate is collected;

[0068] The concentrations of main components in the leachate are: Ni 2.84g / L, Co 40.8g / L, Mg 12.7g / L, Mn7.2g / L, Fe 1.53g / L, Al 93mg / L, Cu 770mg / L, Ca 547mg / L, Zn 631mg / L;

[0069] (2) Iron removal, alumi...

Embodiment 2

[0078] A method for synchronously recovering nickel, cobalt and manganese from sulfuric acid leaching solution containing nickel, cobalt and manganese waste residue, comprising the following steps:

[0079] (1) Sulfuric acid leaching: take the waste residue containing nickel, cobalt and manganese, add a mass fraction of 25% sulfuric acid solution for acid leaching according to the solid-liquid ratio of 120:1g / L, the temperature of the acid leaching is 60°C, and the time of acid leaching is 35min, control the pH at the end of the leaching to 0.5, filter and separate the solid and liquid, and collect the leachate;

[0080] The concentrations of the main components in the leachate are: Ni 5.23g / L, Co 18.5g / L, Mg 6.5g / L, Mn8.2g / L, Fe 2.19g / L, Al 147mg / L, Cu 1370mg / L, Ca 416mg / L, Zn 330mg / L;

[0081] (2) Iron removal, aluminum: get above-mentioned leaching solution, add oxidant sodium chlorate (being n(NaClO 3 )=0.42n(Fe 2+ )), adjust the pH=5.3 with NaOH, age at a temperature o...

Embodiment 3

[0090] A method for synchronously recovering nickel, cobalt and manganese from sulfuric acid leaching solution containing nickel, cobalt and manganese waste residue, comprising the following steps:

[0091] (1) Sulfuric acid leaching: take the waste residue containing nickel, cobalt and manganese, add a sulfuric acid solution with a mass fraction of 20% according to the solid-liquid ratio of 150:1g / L for acid leaching, the temperature of the acid leaching is 80°C, and the time of acid leaching is 15min , control the pH at the end of leaching to be 1.2, filter and separate the solid and liquid, and collect the leachate;

[0092] The concentrations of main components in the leachate are: Ni 5.12g / L, Co 27.3g / L, Mg 9.9g / L, Mn10.4g / L, Fe 1.87g / L, Al 165mg / L, Cu 965mg / L, Ca 732mg / L, Zn 1030mg / L;

[0093] (2) Iron removal, aluminum: get above-mentioned leaching solution, add oxidizing agent sodium hypochlorite (being n(NaClO)=0.75n(Fe 2+ )), adjust pH=5.0 with NaOH, age at a tempe...

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Abstract

The invention discloses a method for recycling nickel, cobalt and manganese synchronously from a sulfuric acid leaching solution containing waste residues of nickel, cobalt and manganese. The method comprises the steps of firstly, removing iron and aluminum from the leaching solution through an oxidation and precipitation method; then, removing the element copper through extraction; then, extracting zinc; and finally, extracting nickel, cobalt and manganese synchronously with tributyl phosphate and saponified neodecanoic acid. By means of the method, nickel, cobalt and manganese in the leaching solution containing the waste residues of nickel, cobalt and manganese can be extracted and recycled synchronously; calcium and magnesium in a raw solution cannot exert an influence on the extraction process; separation cost for recycling the elements nickel, cobalt and manganese separately is lowered; and raw material cost for preparing a nickel-cobalt-manganese-salt ternary battery material is lowered.

Description

technical field [0001] The invention relates to the fields of environmental protection and resource recycling, in particular to a method for synchronously recovering nickel, cobalt and manganese from waste residue containing nickel, cobalt and manganese. Background technique [0002] Nickel-cobalt-manganese ternary cathode material is a new type of lithium-ion battery cathode material, which has the advantages of high capacity, good thermal stability, and high cost performance. Nickel-cobalt-manganese salt is the main raw material for preparing the precursor of nickel-cobalt-manganese ternary positive electrode material. Usually, cobalt sulfate, nickel sulfate and manganese sulfate are hydrolyzed and crystallized under alkaline conditions in a certain proportion to prepare nickel-cobalt-manganese ternary precursor. [0003] Cobalt is mostly associated with nickel, and most of the minerals appear at the same time, such as in nickel laterite ore. In many industries, waste res...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22B47/00C22B23/00C22B15/00C22B19/30C22B19/20
CPCC22B7/007C22B15/0071C22B19/22C22B19/30C22B23/043C22B47/00Y02P10/20
Inventor 许开华盛广宏
Owner JINGMEN GEM NEW MATERIAL
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