High ferroalloy treatment process

A processing technology and ferroalloy technology, applied in photography technology, photography auxiliary technology, instruments, etc., can solve the problems of low copper direct yield, high iron removal cost, increase copper extraction agent consumption, etc., and reduce the use of acid. Quantity, reduce process links, improve the effect of economic benefits

Inactive Publication Date: 2014-09-03
TIANJIN MAOLIAN SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The shortcoming of above-mentioned traditional treatment method is, the one, can not fully leach copper sulfide composition in the alloy, and the direct recovery rate of copper is low; It is enriched in the e

Method used

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  • High ferroalloy treatment process

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Experimental program
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Effect test

Embodiment 1

[0015] The alloy powder with the mass percentage composition of Cu 67.87%, Co 5.71% and Fe 23.46% is placed in the liquid after electroplating according to the liquid-solid ratio of 30:1 to carry out the iron-dissolving reaction. The reaction temperature is room temperature -60 ℃, and the obtained The copper powder, alloy and solution are put into the leaching kettle for oxidative leaching. The solution is added with sulfuric acid until the acid concentration is 0.5mol / l, the operating temperature is 370K, the reaction pressure is 0.6MPa, the reaction time is 3 hours, and the amount of additives added is 5g / l. L, the components of the obtained iron slag after filtration and drying are (mass percent) Cu 0.1, Co 0.08, and Fe 50.7. The composition of the leaching solution (g / L) Cu 44.83, Co 3.77, Fe 0.04, the leaching rate of copper is over 99%, and the leaching rate of cobalt is over 99.3%.

[0016] The sulfate solution of copper, cobalt and nickel containing Fe0.04g / L was elect...

Embodiment 2

[0019] The high-iron copper-cobalt alloy powder with the mass percentage composition of Cu 18%, Co 12% and Fe 65% is placed in the liquid after electroplating according to the liquid-solid ratio of 5:1 to carry out the iron-dissolving reaction. The reaction temperature is room temperature -60 ℃. After completing the obtained alloy and the solution, enter the pressure leaching process together, add sulfuric acid to the solution until the acid concentration is 4mol / l, the operating temperature is 410K, the reaction pressure is 0.7MPa, the reaction time is 3 hours, and the amount of additives added is 15g / L to obtain The composition of the iron slag after filtration and drying is (mass percent) Cu 0.08, Co 0.05, Fe55.6. The composition of the leaching solution (g / L) Cu 44.83, Co 3.77, Fe 0.04, the leaching rate of copper is over 99%, and the leaching rate of cobalt is over 99.3%.

[0020] The sulfate solution containing Fe 0.05g / L copper, cobalt and nickel was electrolytically de...

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Abstract

The invention discloses a high ferroalloy treatment process which comprises the following steps: (1) selecting dissolved iron, namely carrying out a reaction on high ferroalloy powder and a post-electrodeposition liquid returned by a copper electrodeposition system in a liquid-solid ratio of (5:1)-(30:1), wherein Cu<2+> in the post-electrodeposition liquid and Fe in the alloy react, so that almost Fe in the alloy powder enters into the solution in a form of Fe<2+> while Cu<2+> in the solution is converted into single substance Cu powder; (2) oxidizing and selecting leached copper, cobalt and nickel, namely supplementing a proper amount of sulfuric acid into the solution obtained by dissolved iron reaction, the copper powder and the alloy powder till the acid concentration of the solution is 0.5-4mol/L and adding an additive at the same time, and jointly conveying to a leaching reaction kettle to oxidize and leach, wherein the use level of the additive is 5-15g/L and the additive can be salts of ammonium salt, manganese salt and chlorides; (3) carrying out electrolytic deposition of copper and electrolytic decoppering, namely oxidizing and selecting to obtain sulfate of copper and cobalt without Fe and directly entering into the copper electrodeposition system to be electrodepositioned so as to obtain standard cathode copper; (4) extracting cobalt from a post-decoppering liquid.

Description

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Claims

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Application Information

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Owner TIANJIN MAOLIAN SCI & TECH
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