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A method for producing electrolytic copper from copper-containing sludge

A technology of electrolytic copper and copper sludge, which is applied in the direction of electrolysis process, electrolysis components, recycling technology, etc., can solve the problems of high process energy consumption, high impurities in copper salt, etc., and achieve the effect of reducing emissions

Active Publication Date: 2015-08-19
ZHAOQING FEINAN METAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has a simple process, does not need to add other reagents, and is easy to operate, but the energy consumption of the process is high, and the copper salt produced contains more impurities

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1, the present invention utilizes the method for producing electrolytic copper from copper-containing sludge:

[0025] (1) Sintering ： The copper sludge containing 80% crystal water is placed in a differential sintering machine for sintering until honeycomb or granular sintered blocks are obtained.

[0026] (2) Oxygen-enriched side blowing smelting: mix the honeycomb or granular sintered agglomerate obtained in step (1) with 7kg / tCu quartz stone, 4kg / tCu limestone and 11kg / tCu carbon, transfer to the melting furnace, and continue Calcination is carried out by feeding air with an oxygen volume concentration of 90%, wherein the calcination temperature is 1250°C, and oxygen-enriched oxidation is blown until a mixture of blister copper and matte with a copper content of 95% is obtained.

[0027](3) Rotary refining: transfer the mixture of blister copper and matte obtained in step (2) to a rotary refining furnace, add 6kg / tCu quartz stone, 3kg / tCu limestone, 2kg...

Embodiment 2

[0029] Embodiment 2, the present invention utilizes the method for producing electrolytic copper from copper-containing sludge:

[0030] (1) Sintering ： The copper sludge containing 80% crystal water is placed in a differential sintering machine for sintering until honeycomb or granular sintered blocks are obtained.

[0031] (2) Oxygen-enriched side-blowing smelting: mix the honeycomb or granular sintered agglomerate obtained in step (1) with 6kg / tCu quartz stone, 3kg / tCu limestone and 10kg / tCu carbon, transfer to the melting furnace, and continue Calcination is carried out by feeding air with an oxygen volume concentration of 90%, wherein the calcination temperature is 1200°C, and oxygen-enriched oxidation is blown until a mixture of blister copper and matte with a copper content of 89% is obtained.

[0032] (3) Rotary refining: transfer the mixture of blister copper and matte obtained in step (2) to a rotary refining furnace, add 8kg / tCu quartz stone, 4kg / tCu limestone, 1k...

Embodiment 3

[0034] Embodiment 3, the present invention utilizes the method for copper-containing sludge to produce electrolytic copper:

[0035] (1) Sintering ： The copper sludge containing 80% crystal water is placed in a differential sintering machine for sintering until honeycomb or granular sintered blocks are obtained.

[0036] (2) Oxygen-enriched side blowing smelting: mix the honeycomb or granular sintered agglomerate obtained in step (1) with 8kg / tCu quartz stone, 4kg / tCu limestone and 12kg / tCu carbon, transfer to the melting furnace, and continue Calcination is carried out by feeding air with an oxygen volume concentration of 90%, wherein the calcination temperature is 1250°C, and oxygen-enriched oxidation is blown until a mixture of blister copper and matte with a copper content of 90% is obtained.

[0037] (3) Rotary refining: transfer the mixture of blister copper and matte obtained in step (2) to a rotary refining furnace, add 4kg / tCu quartz stone, 2kg / tCu limestone, 2kg / tC...

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Abstract

The invention relates to a method for producing electrolytic copper by utilizing copper-containing sludge, and belongs to the field of waste utilization. In order to overcome the technical defects of heavy environmental pollution and low content of copper in a final product in the traditional pyrogenic copper smelting process, the method for producing the electrolytic copper by utilizing the copper-containing sludge is provided. In the technical process, because the pollution to atmosphere is low, the content of copper in the obtained electrolytic copper product can be up to 99.99 percent, and the yield of copper elements in the whole process is up to more than 85 percent; therefore, the method has wide application prospect.

Description

technical field [0001] The invention relates to a method for producing electrolytic copper by using copper-containing sludge, belonging to the field of waste utilization. Background technique [0002] With the rapid development of electroplating industry, metal surface treatment industry, printed circuit board industry and other industries, a large amount of copper-containing wastewater is produced. At present, factories usually use neutralization and sedimentation treatment for this type of wastewater, resulting in a large amount of copper-containing sludge. If this kind of sludge is piled up randomly, the copper ions in the sludge are likely to be dissolved out and re-enter the water body or soil to cause secondary pollution. In addition, as a non-renewable resource, if copper is discarded at will, it will inevitably cause a great waste of resources. Therefore, vigorously promoting circular economy, turning copper-containing sludge into treasure, and reducing environmental...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25C1/12C25C7/06C22B7/00C22B15/00
CPCY02W30/54Y02P10/20
Inventor 俞挺
Owner ZHAOQING FEINAN METAL