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Method for preparing high-quality cobalt oxide from copper cobalt oxide ore copper extraction raffinate

A technology of extracting copper residue and copper oxide, which is applied in the direction of improving process efficiency, can solve the problems of high cobalt loss, high impurity content, and increasing the depth of impurity removal process steps, and achieve the effect of low energy consumption

Pending Publication Date: 2021-12-28
SHENYANG RES INST OF NONFERROUS METALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of high impurity content and high cobalt loss in copper oxide cobalt ore extraction copper residue liquid cobalt extraction and product preparation process, the present invention provides a method for extracting cobalt from copper oxide cobalt ore copper extraction residue liquid and preparing high-quality cobalt oxide The method, the method increases the deep impurity removal process step, uses the precipitation method to prepare the cobalt oxalate precursor, and is calcined to become high-quality cobalt oxide

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Measure 30 mL of copper extraction liquid, add 70% calcium oxide slurry, stir at room temperature until the final pH 4.0, take out and filter; add 70% magnesium oxide slurry to the filtered liquid to pH 5.5 and filter immediately; add 1.75 Doubling the amount of calcium and magnesium sodium fluoride powder, heating and stirring at 95°C for 60 minutes, and filtering to obtain the filtrate; use 1moL / L dilute sulfuric acid to adjust the pH of the filtrate to 3.0, with a saponification rate of 70% and a concentration of 20% P 2 o 4 Mix the extractants at 1:1, stir at room temperature for 5 minutes, let stand to separate the liquid; add oxalic acid to the raffinate obtained in the previous step to adjust the pH to 1.0, stir at room temperature for 3 hours and then filter. Drying to remove moisture; calcining the prepared cobalt oxalate powder at a temperature of 500°C, taking it out for cooling and packaging after 3 hours.

[0043] Through the above-mentioned process, the o...

Embodiment 2

[0045] Measure 50 mL of the residual copper extraction solution, add 70% calcium oxide slurry, stir at room temperature until the final pH 3.5, take out and filter; add 70% magnesium oxide slurry to the filtered solution to pH 5.7 and filter immediately; add 2 Doubling the amount of calcium and magnesium sodium fluoride powder, heating and stirring at 90°C for 30 minutes, and filtering to obtain the filtrate; use 1mol / L dilute sulfuric acid to adjust the pH of the filtrate to 2.5, with a saponification rate of 50% and a concentration of 20% P 2 o 4Mix the extraction agent 1:1, stir at room temperature for 10 minutes, let stand to separate the liquid; add oxalic acid to the raffinate obtained in the previous step to adjust the pH value to 1.1, stir at room temperature for 3 hours and then filter, and the filtered cobalt oxalate 70 Dry at ℃ to remove moisture; calcine the prepared cobalt oxalate powder at 500℃, take it out for cooling and package after 3 hours.

[0046] Through...

Embodiment 3

[0048] Measure 100ml of the copper extraction liquid, add calcium oxide slurry with a concentration of 70%, stir at room temperature until the final pH 4.5, take out and filter; add 70% magnesium oxide slurry to the filtered liquid to pH 5.0 and filter immediately; add 1.75 times to the filtrate Calcium-magnesium sodium fluoride powder, heated and stirred at 95°C for 60 minutes, filtered to obtain the filtrate; 1mol / L dilute sulfuric acid was used to adjust the pH of the filtrate to 3.5, with a saponification rate of 80% and a concentration of 20% P 2 o 4 The extractant was mixed according to O / A 1:2, stirred at room temperature for 5 minutes, and allowed to stand for liquid separation; adding oxalic acid to the raffinate obtained in the previous step to adjust the pH value to 0.9, stirring at room temperature for 4 hours and then filtering. The cobalt oxalate was dried at 70°C to remove moisture; the prepared cobalt oxalate powder was calcined at a temperature of 500°C, and i...

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Abstract

The invention belongs to the field of nonferrous metallurgy and hydrometallurgy, and relates to a method for extracting cobalt from copper cobalt oxide ore copper extraction raffinate and preparing high-quality cobalt oxide. The method comprises the steps of removing iron and aluminum from calcium oxide; removing copper from magnesium oxide; removing calcium and magnesium from sodium fluoride; saponifying and preparing an extracting agent P2O4; conducting extracting and removing impurities; preparing a cobalt oxalate precursor; and preparing high-quality cobalt oxide. In order to solve the problems of high impurity content and large cobalt loss in the cobalt extraction and product preparation process of the copper cobalt oxide ore copper extraction raffinate, the deep impurity removal process step is additionally arranged in the method, and the cobalt oxalate precursor is prepared by using a precipitation method and is calcined into high-quality cobalt oxide. The method has the advantages of being thorough in impurity removal and high in cobalt recovery rate.

Description

technical field [0001] The invention belongs to the field of hydrometallurgy of non-ferrous metallurgy, and relates to a method for extracting cobalt from copper-cobalt oxide ore copper extraction residue and preparing high-quality cobalt oxide. Background technique [0002] Cobalt is a very important strategic metal with excellent physical and chemical properties, good wear resistance, high strength, corrosion resistance, and strong magnetism. It is widely used in new energy, aerospace, machinery manufacturing, chemical, medical and other fields. Cobalt oxide is a common cobalt-containing product in the industry. It is used as the positive electrode material of cobalt-lithium batteries, as a catalyst in the chemical industry, and also used as glass, enamel, ceramics, magnetic materials, adhesives, sky blue, cobalt blue, cobalt Green and other color colorants, trace element nutrients for livestock. [0003] With the development of economy, the global demand for cobalt resou...

Claims

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Application Information

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IPC IPC(8): C22B3/38C22B23/02C22B23/00
CPCC22B23/0461C22B23/02Y02P10/20
Inventor 詹光舒方霞李辉
Owner SHENYANG RES INST OF NONFERROUS METALS
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