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Method for leaching ore concentrate from copper oxide ores based on complexing reaction, and its leaching agent

A technology of copper oxide ore complexation reaction, applied in the field of mineral metallurgy, can solve the problems of undiscovered high-efficiency copper leaching technology solutions, and achieve the effect of simple operation and low process cost

Inactive Publication Date: 2015-03-11
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, reports on the application of complexation reactions to extract copper are limited to ammonium chloride, ammonium sulfate, ammonium nitrate and other ammonium salts or ammonia water, and no technical solutions for efficiently leaching copper based on other complexation reactants have been found so far.

Method used

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  • Method for leaching ore concentrate from copper oxide ores based on complexing reaction, and its leaching agent
  • Method for leaching ore concentrate from copper oxide ores based on complexing reaction, and its leaching agent
  • Method for leaching ore concentrate from copper oxide ores based on complexing reaction, and its leaching agent

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Embodiment 1

[0033] An embodiment of the present invention provides a leaching agent for a complex reaction with copper oxide ore concentrate with a copper grade of 25%. The leaching agent is prepared by uniformly mixing 5-sulfosalicylic acid and water. The concentration of the solution containing 5-sulfosalicylic acid in the leaching agent is 0.05mol / L. The leaching rate of copper is about 85.5% under the conditions of temperature 30°C, ore particle size less than 74 μm accounted for 80% by weight, leaching agent solution and copper oxide concentrate powder mass liquid-solid ratio of 20:1.

Embodiment 2

[0035] The embodiment of the present invention provides a leaching agent for complex reaction with copper oxide ore concentrate with a copper grade of 25%. The leaching agent is mainly prepared by uniformly mixing 5-sulfosalicylic acid and water. The concentration of the solution containing 5-sulfosalicylic acid in the leaching agent is 0.10mol / L. Under the conditions of temperature 30°C, ore particle size less than 74μm accounted for 80% by weight, leaching agent solution and copper oxide concentrate powder mass liquid-solid ratio of 20:1, the copper leaching rate is about 94.2%.

Embodiment 3

[0037] The embodiment of the present invention provides a leaching agent for complex reaction with copper oxide ore concentrate with a copper grade of 25%. The leaching agent is mainly prepared by uniformly mixing 5-sulfosalicylic acid and water. The concentration of the solution containing 5-sulfosalicylic acid in the leaching agent is 0.20mol / L. The leaching rate of copper is about 96.8% under the conditions of temperature 30°C, ore particle size less than 74 μm accounted for 80% by weight, leaching agent solution and copper oxide concentrate powder mass liquid-solid ratio of 20:1.

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Abstract

The invention belongs to the technical field of mineral metallurgy, and concretely discloses a method for leaching ore concentrate from copper oxide ores based on a complexing reaction, and its leaching agent. The method is characterized in that 5-sulfosalicylic acid is used as a leaching agent to leach copper from the copper oxide ores with the copper level of above 15%, the leaching temperature is 20-60DEG C, copper oxide ores with the granularity of below 74[mu]m account for 75-95% of the weight of the copper oxide ores, the concentration of 5-sulfosalicylic acid is 0.05-0.25mol / L, the 5-sulfosalicylic acid leaching agent is mixed with copper oxide ore powder according to a liquid / solid mass ratio of 5-20:1, and the obtained mixture is fully stirred for 25-50min to obtain a copper-containing solution suitable for later lead extraction and electrodeposition treatment. The leaching agent and the leaching method have the advantages of high leaching rate and short leaching time; and the leaching method guarantees the high copper leaching rate without high temperature or a pressurizing device, and also has the advantages of simple operation and low process cost.

Description

technical field [0001] The invention belongs to the technical field of mineral metallurgy, and in particular relates to a method for leaching copper oxide ore concentrate based on complexation reaction and a leaching agent thereof. Background technique [0002] Copper is one of the most ubiquitous and valuable metals with a wide range of applications in both life and industry. In nature, the minerals that can be used to recover copper are mainly copper sulfide minerals and oxide minerals. Copper sulfide minerals mainly include chalcopyrite (CuFeS 2 ), Bornite (Cu 5 FeS 4 ), copper blue (CuS), chalcocite (Cu 2 S) etc. Copper oxide minerals mainly include malachite (Cu 2 (OH) 2 CO 3 ), Chrysocolla ((Cu,Al) 2 h 2 Si 2 o 5 (OH) 4 ·nH 2 O) and azurite (Cu 3 (OH) 2 (CO 3 ) 2 ), among which malachite is the most common. Copper sulfide minerals have good floatability, and copper concentrate can be easily obtained by flotation. However, due to the decreasing resour...

Claims

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Application Information

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IPC IPC(8): C22B3/16C22B15/00
CPCY02P10/20
Inventor 邓久帅吴丹丹文书明王聪聪张英曹沁波贾陆和
Owner KUNMING UNIV OF SCI & TECH
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