Method for treating cobalt intermediate product

A treatment method and leaching solution technology are applied in the treatment field of cobalt intermediate products, which can solve the problems of large amount of chemical reagents, increased waste residue weight and high cost, and achieve the effects of improving iron removal, leaching effect and low price.

Inactive Publication Date: 2020-08-25
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

The amount of chemical reagents consumed in leaching is large and the cost is high. At the same time, these reducing agents will also introduce impurity elements. The

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for processing cobalt intermediates, characterized in that: comprising the steps of:

[0027] S1 Acid-dissolution leaching: add cobalt intermediate product into water, prepare ore slurry, add sulfuric acid leaching during stirring, wherein the composition of cobalt intermediate product is as follows: containing 26.90% of cobalt, containing 1.58% of copper, containing 3.99% of manganese, containing 1.62% of calcium, containing Manganese 4.09%, iron 5.09%;

[0028] S11: Take 200g of the cobalt intermediate product in a 3L beaker, add 1000mL of water, heat in a 60°C water bath, stir evenly and set aside;

[0029] S12: Adding mass concentration to the spare slurry is 1.84g / cm 3 Sulfuric acid to adjust pH=1.5, react for 30min;

[0030] S2 Reductive leaching: add hydrogen peroxide as a reducing agent for further leaching, and then filter to obtain leaching liquid and leaching residue;

[0031] S21: Slowly add 40ml of hydrogen peroxide to the S12 slurry, and contin...

Embodiment 2

[0036] A method for processing cobalt intermediates, characterized in that: comprising the steps of:

[0037] S1 Acid-dissolution leaching: add cobalt intermediate product into water, prepare ore slurry, add sulfuric acid leaching during stirring, wherein the composition of cobalt intermediate product is as follows: containing 26.90% of cobalt, containing 1.58% of copper, containing 3.99% of manganese, containing 1.62% of calcium, containing Manganese 4.09%, iron 5.09%;

[0038] S11: Take 200g of the cobalt intermediate product in a 3L beaker, add 1000mL of water, heat in a 60°C water bath, stir evenly and set aside;

[0039] S12: Adding mass concentration to the spare slurry is 1.84g / cm 3 Sulfuric acid to adjust pH=1.8, react for 30min;

[0040] S2 Reductive leaching: add hydrogen peroxide as a reducing agent for further leaching, and then filter to obtain leaching liquid and leaching residue;

[0041] S21: Slowly add 50 ml of hydrogen peroxide to the S12 slurry, and conti...

Embodiment 3

[0046] A method for processing cobalt intermediates, characterized in that: comprising the steps of:

[0047] S1 Acid-dissolution leaching: add cobalt intermediate product into water, prepare ore slurry, add sulfuric acid leaching during stirring, wherein the composition of cobalt intermediate product is as follows: containing 26.90% of cobalt, containing 1.58% of copper, containing 3.99% of manganese, containing 1.62% of calcium, containing Manganese 4.09%, iron 5.09%;

[0048] S11: Take 600g of the cobalt intermediate product in a 9L beaker, add 3000mL of water, heat in a 60°C water bath, stir evenly and set aside;

[0049] S12: Adding mass concentration to the spare slurry is 1.84g / cm 3 Sulfuric acid to adjust pH=1.5, react for 30min;

[0050] S2 Reductive leaching: add hydrogen peroxide as a reducing agent for further leaching, and then filter to obtain leaching liquid and leaching residue;

[0051]S21: Slowly add 120ml of hydrogen peroxide to the S12 slurry, and contin...

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Abstract

The invention discloses a method for treating a cobalt intermediate product. The method for treating the cobalt intermediate product comprises the steps that S1, acid dissolution leaching is carried out, specifically, water is added to the cobalt intermediate product to prepare pulp, and sulfuric acid is added to the pulp during stirring for leaching, the cobalt intermediate product contains the following components: 26.90% of cobalt, 1.58% of copper, 3.99% of manganese, 1.62% of calcium, 4.09% of manganese and 5.09% of iron; S2, reduction leaching is carried out, specifically, hydrogen peroxide is added as a reducing agent for further leaching, and then filtering is carried out to obtain leaching liquid and leaching residue; and S3, iron removal is carried out, specifically, carbonate isadded to the leaching liquid to adjust the pulp, and then solid-liquid separation is carried out to obtain iron removal slag and iron removal liquid. The method for treating the cobalt intermediate product is simple in process and is realized through three steps of acid dissolution leaching, reduction leaching and iron removal. The hydrogen peroxide is adopted to reduce Co3+ which is difficult toleach in the leaching process, and the leaching of cobalt and the removal of iron can be quickly and effectively achieved without any environmental pollution, and the method for treating the cobalt intermediate product belongs to clean production. Compared with other commonly used reducing agents, the reagent cost of the hydrogen peroxide is lower in price, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of hydrometallurgy, in particular to a method for processing cobalt intermediates. Background technique [0002] my country's cobalt ore resources are scarce and have always relied on imports. In recent years, with the continuous expansion of domestic cobalt smelting capacity and changes in the international supply of cobalt raw materials, domestic smelters have begun to import and purchase more intermediate cobalt products out of various considerations. Cobalt intermediates are mainly cobalt hydroxide, and sulfuric acid leaching is generally used for the treatment of cobalt intermediates, while cobalt intermediates contain a small amount of Co 3+ ,Co 3+ Not easily leached by acid, usually needs to be reduced to Co 2+ Then leaching is carried out. [0003] At present, the commonly used reducing agents in the leaching process of cobalt intermediate products include ferrous sulfate, sulfur dioxide, sodium ...

Claims

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Application Information

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IPC IPC(8): C22B3/08C22B3/44C22B23/00
CPCC22B3/08C22B3/44C22B23/043C22B23/0461Y02P10/20
Inventor 曹栋强龚丽锋王红忠黄飞中方志国罗瑞平
Owner 浙江格派钴业新材料有限公司
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