Method for industrially extracting cobalt, copper and iron by taking cobalt-copper alloy as raw material

A technology for cobalt-copper alloy and cobalt-copper-iron is applied in the field of industrial extraction of cobalt, iron and copper from cobalt-copper alloy as raw material, which can solve the problems of short process flow, difficulty in recovering cobalt-copper alloy with high efficiency, low production cost, etc. The effect of short process, high leaching operation efficiency and low production cost

Active Publication Date: 2011-02-16
XIAMEN TUNGSTEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings of the existing treatment methods, solve the problem of high-efficiency recovery of cobalt-copper alloys in the wet process industry, and provide a method for industrially extracting cobalt, copper, and iron using cobalt-copper alloys as raw materials, and the process flow is short , Low production cost, conducive to the comprehensive recovery of cobalt-copper alloy metal elements, suitable for industrial production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0029] Example one: concentrated sulfuric acid (concentration 98%) 2000ml, nitric acid (concentration 60%) 1500ml, hydrofluoric acid (concentration 55%) 1000ml, add in 6000ml water and mix uniformly, be mixed with mixed acid solution. Weigh 2000 g of massive cobalt-copper alloy, add it into the mixed acid solution one by one, keep the reaction temperature at 85° C., and continue the reaction for 5 hours.

[0030] Results: The measurement showed that the pH at the end point of the reaction was 2.5, and the obtained leaching filtrate contained 67.5g / L cobalt, 54.3g / L copper, and 66.4g / L iron. The fully reacted cobalt-copper alloy is separated from the leaching solution.

[0031] The unreacted cobalt-copper alloy continues to react with the newly prepared mixed acid solution, the cobalt-copper alloy is basically dissolved, the leaching rate of cobalt reaches 99.2%, the leaching rate of copper reaches 98.5%, and the leaching rate of iron reaches 99.8%.

example 2

[0032] Example two: concentrated sulfuric acid (concentration 98%) 2000ml, nitric acid (concentration 60%) 2000ml, hydrofluoric acid (concentration 55%) 2000ml, add in 6000ml water and mix uniformly, be mixed with mixed acid solution. Weigh 2000 g of the massive cobalt-copper alloy, add it to the mixed acid solution one by one, keep the reaction temperature at 85° C., and continue the reaction for 3 hours.

[0033] Results: The measurement showed that the pH at the end of the reaction was 2.0, and the obtained leaching filtrate contained 60.4g / L cobalt, 51.7g / L copper, and 63.6g / L iron. The fully reacted cobalt-copper alloy is separated from the leaching solution.

[0034] The unreacted cobalt-copper alloy continues to react with the newly prepared mixed acid solution, the cobalt-copper alloy is basically dissolved, the leaching rate of cobalt reaches 99.4%, the leaching rate of copper reaches 99.5%, and the leaching rate of iron reaches 99.8%.

example 3

[0035] Example three: concentrated sulfuric acid (concentration 98%) 1500ml, nitric acid (concentration 60%) 3000ml, hydrofluoric acid (concentration 55%) 800ml, add in 6000ml water and mix uniformly, be mixed with mixed acid solution. Weigh 2000 g of massive cobalt-copper alloy, add it into the mixed acid solution one by one, keep the reaction temperature at 88° C., and continue the reaction for 5 hours.

[0036] Results: The measurement showed that the pH at the end point of the reaction was 3.5, and the obtained leaching filtrate contained 64.2g / L cobalt, 49.8g / L copper, and 67.3g / L iron. The fully reacted cobalt-copper alloy is separated from the leaching solution.

[0037] The unreacted cobalt-copper alloy continues to react with the newly prepared mixed acid solution, the cobalt-copper alloy is basically dissolved, the leaching rate of cobalt reaches 98.5%, the leaching rate of copper reaches 97.8%, and the leaching rate of iron reaches 99.7%.

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Abstract

The invention discloses a method for industrially extracting cobalt, copper and iron by taking a cobalt-copper alloy as a raw material, which is characterized by comprising the following steps: (1) an oxidation leaching process, wherein water, concentrated sulfuric acid, concentrated nitric acid and a catalyst are prepared into mixed acid solution in a volume ratio of 10:0.5-6:0.5-6:0.1-10, and then a cobalt-copper alloy block is added to the mixed acid solution, so that the cobalt, the copper and the iron of the cobalt-copper alloy are leached into the solution; and (2) a solid-liquid separation process, wherein when the reaction is carried out to make the acidity of the solution reach 10-50g / L, liquid supernatant is sucked in a siphon mode to separate from the cobalt-copper alloy which is not completely dissolved, and the cobalt-copper alloy which is not completely dissolved is continuously leached according to a method in the process (1). The method has short process flow and low production cost, contributes to comprehensive recovery of metallic elements of the cobalt-copper alloy, and is suitable for industrial production.

Description

technical field [0001] The invention relates to a method for industrially extracting cobalt, copper and iron from a cobalt-copper alloy as a raw material, which is a method for leaching cobalt, copper and iron from the cobalt-copper alloy by using a relatively simple process. Background technique [0002] With the development of the economy, especially the rapid development of battery materials, ultrafine powder materials and superhard materials, the consumption of related non-ferrous metal materials is also growing rapidly, especially the rapid consumption of cobalt resources. However, China’s cobalt resources are relatively scarce. According to statistics, there are currently about 26 manufacturers in China that use cobalt concentrates to produce various cobalt products, with a total annual output of 15,000 tons of cobalt metal, of which Jinchuan’s production accounts for 27%. China has become the world's second largest cobalt producer and plays a pivotal role in the globa...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C22B23/00C22B3/06C22B15/00C21B15/00
CPCY02P10/20
Inventor宋阜马跃飞刘会明苏志宏
OwnerXIAMEN TUNGSTEN