A kind of method for selectively recovering copper from chloride mixed solution

A technology of chloride and copper chloride, which is applied in the field of hydrometallurgy and circular economy, can solve the problems of difficult recycling of copper, and achieve the effect of saving costs and solving difficult selection

Inactive Publication Date: 2020-09-22
CENT SOUTH UNIV
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  • Description
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Problems solved by technology

[0003] Aiming at the deficiencies in the existing technology of selectively recovering copper from chloride mixtures, the purpose of the present invention is to provide a method for converting copper ions existing in the form of cations into copper chloride molecules or chlorine in complex chloride solution systems. Copper complex anion form, and then using anion exchange resin to effectively adsorb and separate it, this method realizes the selective separation of copper from complex chloride solution systems containing tin, manganese, germanium or cobalt to achieve The purpose of resource recycling can effectively solve the problem of difficult recycling of copper in complex chloride systems

Method used

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  • A kind of method for selectively recovering copper from chloride mixed solution

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Embodiment 1

[0027]Using the copper chloride mixed solution produced by a certain enterprise in the production process of germanium as raw material, the content of copper in the raw material solution reaches 12.8g / L, and the content of germanium is 1.2g / L, and is recovered from the mixed solution of chloride through the following steps copper:

[0028] Add manganese chloride to the chloride mixture so that the concentration of chloride ions in the entire system rises to 7mol / L, then control the temperature at 25°C and shake for 0.5h, keep the temperature of the entire system at 25°C after the complexation is complete, use The peristaltic pump controls the injection rate to be 1BV / h (meaning that the volume of the solution passing through the ion exchange column per hour is 1 times the volume of the loaded resin bed) and passes through the loaded D201 anion exchange resin bed in the way of "top in and bottom out". layer. Then, the residual adsorption liquid was diluted by corresponding tim...

Embodiment 2

[0030] Using the copper chloride mixed solution produced by a certain enterprise in the production process of germanium as raw material, the content of copper in the raw material solution reaches 12.8g / L, and the content of germanium is 1.2g / L, and is recovered from the mixed solution of chloride through the following steps copper:

[0031] Add calcium chloride to the chloride mixture to increase the concentration of chloride ions to 9mol / L, then control the temperature at 15°C and shake for 1.5h, keep the temperature of the entire system at 15°C after the complexation is complete, and use a peristaltic pump to control The injection rate is 1BV / h, and the 201×4 anion exchange resin bed is loaded in the way of “top in and bottom out”. Then the adsorption residual liquid was diluted by corresponding times and then sent to ICP for analysis. Finally, the separation and recovery rate of copper was 90.57%, and the adsorption rate of germanium was 0.19%. For the saturated resin bed,...

Embodiment 3

[0033] Using the copper chloride mixed solution produced by a certain enterprise in the production process of germanium as raw material, the content of copper in the raw material solution reaches 19.2g / L, and the content of germanium is 0.8g / L, and is recovered from the mixed solution of chloride through the following steps copper:

[0034] Add calcium chloride to the chloride mixture to increase the concentration of chloride ions to 7mol / L, then control the temperature at 25°C and shake for 1 hour, keep the temperature of the entire system at 25°C after the complexation is complete, and use a peristaltic pump to control the The sample rate is 2BV / h, and the D201 anion exchange resin bed is loaded in the way of "top in and bottom out". Then the adsorption residual liquid was diluted by a corresponding multiple and then sent to ICP for analysis. Finally, the separation and recovery rate of copper was 89.10%, and the adsorption rate of germanium was 0.23%. For the saturated res...

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Abstract

The invention provides a method for selectively recovering copper from chloride mixed liquor. The method for selectively recovering copper from chloride mixed liquor comprises the following steps of adding a chlorine ion complexing agent into a chloride solution containing copper ions for coordination reaction so as to convert copper ions into copper chloride molecules and / or copper chloride complex anions, adsorbing the copper chloride molecules and / or the copper chloride complex anions in the separating solution by adopting an anion exchange resin, and loading copper chloride molecules and / or the anion exchange resin of the copper chloride complex anions is desorbed by adopting an acid solution or water to obtain a copper ion solution. According to the method for selectively recovering copper from chloride mixed liquor, copper is removed from tin and manganese, germanium, cobalt and other complex chlorination solution systems, the aim of recycling and utilizing resources is achieved,so that the problem that copper in a complex chloride solution system is difficult to recycle is effectively solved.

Description

technical field [0001] The invention relates to a method for selectively recovering copper from complex chloride mixed liquids, in particular to selectively converting copper cations in complex chloride solution systems containing tin, manganese, germanium or cobalt into copper chloride complexes The invention relates to a method for realizing the adsorption and separation of anion resins by using a substance molecule or anion, and belongs to the fields of hydrometallurgy and circular economy. Background technique [0002] Copper, as a ductile, electrically and thermally conductive metal, has become an integral part of cables, electronic components and alloys. my country's annual copper consumption has exceeded 3 million tons, but China's copper production is largely dependent on imported copper concentrates, blister copper and electrolytic copper. In fact, in the process of extracting copper and smelting other copper-associated non-ferrous metal concentrates, a large amoun...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/42C22B3/44C22B15/00
CPCY02P10/20
Inventor 周康根彭长宏陈伟吴业惠子程钰尧
Owner CENT SOUTH UNIV
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