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Method for producing tough cathode with cupric sludge

A technology for cathode copper and copper sludge, which is applied in dewatering/drying/concentrating sludge treatment, improvement of process efficiency, photography process, etc., can solve the problems of copper salt containing many impurities and high process energy consumption, and achieve a simple process flow , mature technology, quick effect

Active Publication Date: 2013-12-04
ZIJIN MINING GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Method for producing tough cathode with cupric sludge
  • Method for producing tough cathode with cupric sludge
  • Method for producing tough cathode with cupric sludge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The copper sludge produced by the treatment of copper-containing acidic wastewater in a gold-copper mine mainly exists in the mixture of copper hydroxide, iron hydroxide, aluminum hydroxide, carbonate and other substances. In addition, there is a small amount of The analysis results of the main elements of the copper sludge are shown in Table 1.

[0033]Table 1 Analytical results of main elements in the sludge generated from the wastewater treatment of a gold-copper mine / % (dry basis)

[0034]

[0035] A method for producing cathode copper from copper-containing sludge comprises the following process steps in sequence:

[0036] The first step of pressing and dehydrating copper-containing sludge: the copper sludge with a moisture content of 96.75% produced by the treatment of copper-containing acidic wastewater from a gold-copper mine is fed and filtered by a slurry pump for 480 minutes, and the feed pressure filter is controlled at 1.0MPa. After the feed filtration ...

Embodiment 2

[0043] The copper sludge produced by the treatment of copper-containing acidic wastewater in an electroplating plant mainly exists in the mixture of copper hydroxide, iron hydroxide and other substances. The main element analysis results of the copper sludge are shown in Table 3:

[0044] Table 3 Analytical results of main elements of the sludge produced by wastewater treatment in an electroplating plant / % (dry basis)

[0045]

[0046] A method for producing cathode copper from copper-containing sludge comprises the following process steps in sequence:

[0047] The first step is dehydration of copper-containing sludge: the copper sludge with a moisture content of 94.63% produced by the treatment of copper-containing acidic wastewater in an electroplating plant is fed and filtered by a slurry pump for 120 minutes, and the feed filter is controlled at 0.6MPa. After the material is filtered, feed compressed air with a pressure of 1.2 MPa into the membrane filter plate to sque...

Embodiment 3

[0055] The copper sludge produced by the treatment of copper-containing acidic wastewater in a copper smelter is mainly a mixture of copper hydroxide, iron hydroxide and other substances. The main element analysis results of the copper sludge are shown in Table 5.

[0056] Table 5 Analysis results of main elements in the sludge produced by wastewater treatment in a copper smelter / % (dry basis)

[0057]

[0058] A method for producing cathode copper from copper-containing sludge comprises the following process steps in sequence:

[0059] The first step is press dehydration of copper-containing sludge: the copper sludge with a moisture content of 96.17% produced by the treatment of copper-containing acidic wastewater in a copper smelter is fed and filtered by a slurry pump for 240 minutes, and the feed filter is controlled at 0.8 MPa. After the feed is filtered, the compressed air with a pressure of 1.4 MPa is introduced into the membrane filter plate to press and dehydrate ...

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Abstract

The invention relates to a method for producing tough cathode with cupric sludge. The method comprises the following processing steps: step 1, squeezing and dewatering: squeezing and dewatering cupric sewage; step 2, heap leaching or pickling: sprinkling acid solution on a columnar heap and feeding obtained heap leaching pregnant solution to an extraction system, or feeding squeezed and dewatered lump sludge to a pickling pool to pickle the squeezed and dewatered lump sludge with acid solution and feeding obtained pickling pregnant solution to the extraction system; step 3, extraction-reverse extraction: performing extraction on the heap leaching pregnant solution or the pickling pregnant solution obtained in the step 2, and performing reverse extraction on obtained loaded organic phase to obtain copper pregnant solution; step 4, electro-deposition: performing electro-deposition on the copper pregnant solution obtained in the step 3 under a copper condition to obtain tough cathode. The method has the advantages of low energy consumption, environmental friendliness, applicability to sludge with a low copper content, easiness in solid-liquid separation, high washing rate, high total recovery rate of copper, mature technology and the like and is applicable to industrial fields such as heavy mineral mining, non-ferrous metal smelting, machining and electroplating.

Description

technical field [0001] The invention relates to a method for producing cathode copper from copper-containing sludge, which is suitable for applications in industrial fields such as heavy mining, nonferrous metal smelting, mechanical processing, and electroplating. Background technique [0002] Heavy mining, non-ferrous metal smelting, mechanical processing, and electroplating are the main industries that produce copper-containing wastewater. Because copper-containing wastewater has the characteristics of persistence, high toxicity, serious pollution, and non-biodegradation, it is extremely harmful to the ecological environment. [0003] In the prior art, the treatment of copper-containing wastewater generally adopts the neutralization precipitation method, that is, the copper ions are converted into copper hydroxide precipitates and other metal ions are converted into other precipitates by adding a neutralizing agent, and then solid-liquid separation is obtained to obtain co...

Claims

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Application Information

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IPC IPC(8): C25C1/12C22B7/00C02F11/12
CPCY02P10/20
Inventor 巫銮东沈贤德谭希发甘永刚林斌邓莉莉丘财庆龙翼
Owner ZIJIN MINING GROUP
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