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Processing method of trivalent cobalt nickel oxide waste material and waste cobalt nickel alloy

A technology of cobalt-nickel oxide and a treatment method, which is applied in the field of nickel alloys, processing trivalent cobalt-nickel oxide waste and waste cobalt, can solve the problems of low leaching rate and long leaching time, and achieves short leaching time and leaching rate. High, reducing the effect of discharge

Active Publication Date: 2014-08-27
GEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Usually, one ton of cobalt-nickel oxide containing trivalent requires 1-2 tons of reducing agent, and the leaching time is long, and the leaching rate is not high; while the treatment of one ton of waste cobalt and nickel-containing alloys requires about 0.3-0.5 tons of oxidizing agent , for some alloy particles with very large particles, multiple roasting is required, and the leaching rate is not high

Method used

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  • Processing method of trivalent cobalt nickel oxide waste material and waste cobalt nickel alloy

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Effect test

Embodiment 1

[0021] Adopt following method to process trivalent cobalt-nickel oxide waste material and waste cobalt, nickel alloy, comprise the steps:

[0022] 1. Slurry the nickel trioxide waste with a sulfuric acid solution with a hydrogen ion concentration of 1mol / l, the solid-to-liquid ratio is 1:5, and the reaction temperature is 80°C;

[0023] 2. Add waste alloys containing cobalt and nickel under stirring, the stirring speed is 100-800r / min, the mass ratio of alloy waste to trivalent cobalt-nickel oxide waste is 1:0.5, and the reaction time is 4 hours. The temperature is maintained at 80°C, during which acid needs to be supplemented to maintain the concentration of hydrogen ions. Among them, the particle size of nickel oxide waste is 0.1mm, and the particle size of waste cobalt and nickel-containing alloys is 0.1mm;

[0024] 3. After filtering, the filter residue returns to step 1 for leaching;

[0025] 4. Impurity removal: Add an alkali solution with a concentration of 6mol / l to t...

Embodiment 2

[0027] Adopt following method to process trivalent cobalt-nickel oxide waste material and waste cobalt, nickel alloy, comprise the steps:

[0028] 1. Slurry the trivalent cobalt-nickel oxide waste—lithium cobaltate, with a hydrogen ion concentration of 2mol / l sulfuric acid solution, the solid-to-liquid ratio is 1:20, and the reaction temperature is 99°C;

[0029] 2. Add the alloy scrap containing cobalt and nickel - nickel-iron alloy under stirring, the stirring speed is 100-800r / min, the mass ratio of the alloy scrap to the trivalent cobalt-nickel oxide scrap is 1: 4, and the reaction time is 10 Hours, the reaction temperature is maintained at 99 ° C, during which acid needs to be added to maintain the concentration of hydrogen ions, wherein the particle size of lithium cobaltate is 1.0mm, and the particle size of nickel-iron alloy is 5.0mm;

[0030] 3. After filtering, the filter residue is returned to step 1 for leaching. In addition to cobalt and nickel ions, the filtrate ...

Embodiment 3

[0033] Adopt following method to process trivalent cobalt-nickel oxide waste material and waste cobalt, nickel alloy, comprise the steps:

[0034] 1. Add lithium nickelate waste to a nitric acid solution with a hydrogen ion concentration of 1.5mol / l to make slurry, the solid-to-liquid ratio is 1:10, and the reaction temperature is 90°C;

[0035] 2. Add cobalt-copper alloy waste under stirring, the stirring speed is 100-800r / min, the mass ratio of cobalt-copper alloy waste to lithium nickelate waste is 1:3, the reaction time is 7 hours, and the reaction temperature is maintained at 90°C. It is necessary to add acid to maintain the concentration of hydrogen ions. Among them, the particle size of lithium nickelate waste is 0.5mm, and the particle size of cobalt-copper alloy waste is 2.0mm;

[0036]3. After filtering, the filter residue is returned to step 1 for leaching. In addition to cobalt and nickel ions, the filtrate also contains impurities such as iron, chromium, copper, t...

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Abstract

The application of the present invention provides a method for treating trivalent cobalt-nickel oxide waste and waste cobalt and nickel alloys. First, the trivalent cobalt-nickel oxide waste is slurried with an acid solution with a hydrogen ion concentration of 1-2mol / l, Add alloy waste containing cobalt and nickel under stirring, the mass ratio of alloy waste to trivalent cobalt-nickel oxide waste is 1:0.5-4, and the reaction temperature is maintained at 80-99°C. After filtering, the filter residue returns to the previous step for leaching , the filtrate undergoes chemical preliminary impurity removal and extraction deep purification to obtain a high-concentration, pure cobalt and nickel solution. The treatment method can greatly reduce the consumption of auxiliary materials, increase the leaching rate, shorten the reaction time, reduce the generation of toxic and harmful gases, and have huge economic and environmental benefits.

Description

technical field [0001] The application of the invention relates to a method for treating trivalent cobalt-nickel oxide waste and waste cobalt and nickel alloys, which belongs to the technical field of environmental protection and resource recycling. Background technique [0002] Trivalent cobalt-nickel oxides are mainly used in pigments, ceramics and ceramic glazes, glass, preparation of cobalt-nickel salts, oxidants and catalysts, battery materials, etc. Cobalt and nickel alloys are mainly used in superalloys, hard magnetic alloys, hard alloys, superhard alloys, stainless steel, corrosion-resistant alloys, wear-resistant alloys, etc. [0003] Trivalent cobalt-nickel oxides and cobalt- and nickel-containing alloys are widely used, and in the process of production and use, a large amount of waste materials containing trivalent cobalt-nickel oxides and waste cobalt-nickel-containing alloys will be produced. , these cobalt and nickel-containing wastes will be reused. Usually, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B23/00C22B3/08C22B3/44
CPCY02P10/20
Inventor 王勤陈艳红张功勋王超马琳闫梨
Owner GEM CO LTD
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