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A method for separating and recovering cobalt, copper and iron in white metal

A technology for separation and recovery of white alloy, applied in the field of separation and recovery of cobalt, iron, and copper in white alloy, can solve the problems of low leaching rate, difficult to control, violent reaction, etc., and achieve easy, easy to control, and high leaching rate. Effect

Active Publication Date: 2021-03-16
MEISHAN SHUNYING POWER BATTERY MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Aiming at the technical problems existing in the prior art for the recovery and leaching process of copper, cobalt and iron in white alloy, the reaction is violent, unstable, difficult to control, low leaching rate and difficult to realize large-scale production, etc., the present invention provides a separation Method for recovering cobalt, copper and iron in white metal

Method used

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  • A method for separating and recovering cobalt, copper and iron in white metal
  • A method for separating and recovering cobalt, copper and iron in white metal
  • A method for separating and recovering cobalt, copper and iron in white metal

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Grind the purchased white metal into fine powder with a ball mill, pass through a 100-mesh sieve, pour 200g of white metal powder into a beaker, add 800ml of water, stir and slurry to obtain a slurry mixture, and then add it to the slurry mixture Slowly add concentrated sulfuric acid with a mass fraction of 98% to obtain the first solution, the coefficient n in the volume formula of the added concentrated sulfuric acid is 0.6, heat up to 75°C, and slowly add the sodium nitrate solution with a mass fraction of 10% while stirring. In a solution, react, detect the copper ion content in the solution during the reaction, when Cu 2+ When the concentration is 2.8g / L, stop adding sodium nitrate solution, continue to react for 30 minutes, then add iron powder for replacement, react for 10 minutes, and filter. The filter residue was washed twice. The slag is 107.92g of sponge copper slag, then add hydrogen peroxide to the filtrate, 0.8-1.8 kg of 27% industrial-grade hydrogen per...

Embodiment 2

[0034] Grind the purchased white metal into fine powder with a ball mill, pass through a 100-mesh sieve, pour 180g of white metal powder into a beaker, add 800ml of water, stir and slurry to obtain a slurry mixture, and then add it to the slurry mixture Slowly add concentrated sulfuric acid with a mass fraction of 98% to obtain the first solution, the coefficient n in the volume formula of the added concentrated sulfuric acid is 0.8, heat up to 75°C, and slowly add the sodium nitrate solution with a mass fraction of 10% while stirring. In a solution, react, detect the copper ion content in the solution during the reaction, when Cu 2+ When the concentration is 4.7g / L, stop adding sodium nitrate solution, continue to react for 30 minutes, then add iron powder for replacement, react for 10 minutes, and filter. The filter residue was washed twice.

[0035] The slag is 82.5g of sponge copper slag, then add hydrogen peroxide to the filtrate, 0.8-1.8 kg of 27% industrial-grade hydro...

Embodiment 3

[0038] Grind the purchased white metal into fine powder with a ball mill, pass through a 100-mesh sieve, pour 150g of white metal powder into a beaker, add 800ml of water, stir and slurry to obtain a slurry mixture, and then add it to the slurry mixture Slowly add concentrated sulfuric acid with a mass fraction of 98% to obtain the first solution, the coefficient n in the volume formula of the added concentrated sulfuric acid is 1.1, heat up to 75°C, and slowly add the sodium nitrate solution with a mass fraction of 10% while stirring. In a solution, react, detect the copper ion content in the solution during the reaction, when Cu 2+ When the concentration is 7.6g / L, stop adding sodium nitrate solution, continue to react for 30 minutes, then add iron powder for replacement, react for 10 minutes, and filter. The filter residue was washed twice.

[0039] The slag is 67.85g of sponge copper slag, then add hydrogen peroxide to the filtrate, 0.8-1.8 kg of 27% industrial-grade hydr...

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Abstract

The invention provides a method for separating and recovering cobalt, copper and iron in white metal, comprising the following steps: step 1, mixing white metal powder with water, stirring and slurrying to obtain a slurry mixture; step 2, adding to step 1 In the obtained slurry mixture, after adding concentrated sulfuric acid while stirring, the first solution is obtained; step 3, at a temperature of 70°C to 85°C, adding sodium nitrate solution to the first solution obtained in step 2 while stirring, When Cu in solution 2+ When the ion content is 2g / L~8g / L, stop adding the sodium nitrate solution to obtain the second solution. Step 4, adding iron powder to the second solution obtained in step 3, reacting, and filtering to obtain simple copper and a third solution, the third solution is a mixed solution containing cobalt and iron. Then, iron powder is used to replace copper with copper, so that copper, cobalt and iron are separated, and then further recovery of cobalt and iron is carried out. The method has mild reaction, stability, safety, easy control, high leaching rate and easy realization of large-scale production.

Description

technical field [0001] The invention belongs to the technical field of metal hydrometallurgy, and in particular relates to a method for separating and recovering cobalt, copper and iron in white metal. Background technique [0002] Copper-cobalt white alloy, also known as white alloy or cobalt white alloy, refers to an alloy that mainly contains metals such as cobalt, copper, and iron, and also contains a small amount of metals such as magnesium, manganese, and gallium. Obtained by reduction smelting of raw materials. At present, the common copper-cobalt white alloy recovery process adopts normal pressure acid oxidation leaching and high pressure acid oxidation leaching. The normal pressure acid oxidation leaching is mainly to add oxidants under acidic conditions, such as hydrogen peroxide, sodium chlorate, etc., and also use hydrochloric acid system, and then Chlorine gas is added as an oxidizing agent. However, sodium chlorate is usually added under high temperature cond...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/08C22B3/46C22B3/44C22B3/26C22B15/00C22B23/00
CPCC22B3/08C22B3/44C22B3/46C22B15/0071C22B15/0091C22B23/04C22B3/26Y02P10/20
Inventor 何永赵林赵澎刘伟李莉
Owner MEISHAN SHUNYING POWER BATTERY MATERIALS CO LTD
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