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Cobalt copper sulfide ore processing method

A treatment method and technology of cobalt sulfide, applied in the direction of improving process efficiency, can solve the problems of high cost and low leaching rate of cobalt and copper, and achieve the effect of reducing leaching cost and improving leaching efficiency

Active Publication Date: 2012-05-23
GEM CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the embodiment of the present invention provides a cobalt-copper sulfide ore treatment method to solve the technical problem of low cobalt-copper leaching rate and high cost in the cobalt-copper sulfide ore treatment method in the prior art

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  • Cobalt copper sulfide ore processing method
  • Cobalt copper sulfide ore processing method

Examples

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Effect test

Embodiment 1

[0053] After ball milling, 100g of cobalt copper sulfide ore (Co7.3%, Cu8.2%, Fe5.6%) is passed through a 50-mesh sieve, according to the solid-liquid ratio of 1:5, adding sulfuric acid solution, adjusting the pH to 0.5, and the temperature is 75 ℃, add 15.5g of sodium sulfite, and react for 2 hours; maintain the pH value of the system, adjust the temperature to 70°C, then add 1.2g of sodium chlorate, and react for 1 hour; adjust the temperature of the reaction system to 50°C, and maintain the original pH of the system Value, add sodium chlorate, react for 0.5 hours, then adjust the pH value of the system to 6, add alkali solution, filter, collect the filtrate for extraction. The final cobalt leaching rate was 98.1%, and the copper leaching rate was 97%.

Embodiment 2

[0055] After ball milling, 100g of cobalt-copper sulfide ore (Co7.3%, Cu8.2%, Fe5.6%) was passed through a 100-mesh sieve. According to the solid-liquid ratio of 1:4, nitric acid solution was added to adjust the pH to 0.6, and the temperature was 65 ℃, add 16g of sodium sulfite, and react for 3 hours; maintain the pH value of the system, adjust the temperature to 67°C, then add 1.3g of sodium chlorate, and react for 2 hours; adjust the temperature of the reaction system to 65°C, and maintain the original pH value of the system , add sodium chlorate, react for 0.5 hours, then adjust the pH value of the system to 5, add alkali solution, filter, collect the filtrate for extraction. The final cobalt leaching rate was 99.1%, and the copper leaching rate was 97.9%.

Embodiment 3

[0057] After ball milling, 100g of cobalt-copper sulfide ore (Co7.3%, Cu8.2%, Fe5.6%) was passed through a 150-mesh sieve. According to the solid-liquid ratio of 1:4.5, hydrochloric acid solution was added to adjust the pH to 0.7, and the temperature was 70 ℃, add 18g of sodium sulfite, and react for 2 hours; maintain the pH value of the system, adjust the temperature to 70°C, then add 1.4g of sodium chlorate, and react for 3 hours; adjust the temperature of the reaction system to 70°C, and maintain the original pH value of the system , add sodium chlorate, react for 0.5 hours, then adjust the pH value of the system to 3.5, add alkali solution, filter, collect the filtrate for extraction. The final cobalt leaching rate was 99.3%, and the copper leaching rate was 98.4%.

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Abstract

The invention which is suitable for the technical field of mineral processing provides a cobalt copper sulfide ore processing method. The method comprises the following steps: 1, grinding the cobalt copper sulfide ore, mixing the cobalt copper sulfide ore with sulfurous acid or a sulfite according to a ratio of the total mass of cobalt and copper in the cobalt copper sulfide ore to the mass of sulfurous acid or the sulfite of 1:1-3, adding an acidic solution to adjust the pH value of the obtained system to 0.5-1, and reacting for more than 1h at 65-80DEG C; and 2, maintaining the pH value andthe temperature of the system, adding chloric acid or a chlorate according to a ratio of the total mass of residual cobalt and residual copper in the system to the mass of chloric acid or the chlorate of 1:1-3, and continuously reacting for more than 1h. The cobalt copper sulfide ore processing method of the invention, which allows cobalt and copper in the cobalt copper sulfide ore to be fully leached by carrying out primary leaching with sulfurous acid or the sulfite and carrying out secondary leaching with chloric acid or the chlorate, allows the leaching efficiency of cobalt and copper in the cobalt copper sulfide ore to be substantially improved. Sulfurous acid or the sulfite is used as an oxidant and a reductant in the primary leaching process, and chloric acid or the chlorate is used as an oxidant in the secondary leaching process, so the processing cost is substantially reduced.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, in particular to a method for processing cobalt-copper sulfide ore Background technique [0002] At present, conventional methods for treating cobalt-copper sulfide mixed concentrates include high-pressure ammonia leaching, high-pressure oxygen leaching, sulfated roasting, bioleaching, etc., but the high-pressure leaching method requires high equipment, and the sulfated roasting method can High energy consumption, complex equipment, and long bioleaching discharge cycle are not suitable for processing high-grade concentrates. However, the full-wet atmospheric pressure treatment of cobalt-copper concentrates has the characteristics of simple equipment and short process flow. However, the current full-wet process has The cobalt or copper leaching rate is not high, and the cost is high. Contents of the invention [0003] In view of this, the embodiment of the present invention provides ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/08C22B15/00C22B23/00
CPCY02P10/20
Inventor 王勤何显达
Owner GEM CO LTD
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