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Process for deep copper removal through electrodeposition

A production method and copper removal technology, applied in the direction of photography process, photography auxiliary process, process efficiency improvement, etc., can solve the problems of copper metal loss, high energy consumption, low metal recovery rate, etc. Huge losses and the effect of improving metal recovery

Active Publication Date: 2015-07-01
李东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problems of serious loss of copper metal, low metal recovery rate and high energy consumption in the production process of the existing induced decoppering method, and to provide a process production method for deep decoppering by electrowinning

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0028] Example 1: There are 6 electrowinning cells in one group, and the liquid intake in each group is 1.5m 3 / h, the copper content of the electrolyte is 20g / L (converted to 20kg / m 3 ) The average current efficiency is calculated as 50%, and the volume of electrolyte stored in the last tank is 3m 3 , its copper content is 2g / L (converted to 2 kg / m 3 ) The target value of copper content in the final solution is set to 1 g / L (converted to 1Kg / m 3 ) The current intensity that needs to pass is:

[0029] I=

[0030] = (1.5m 3 / h×20 Kg / m 3 )÷(50%×1.1852g / A·h×6×10 -3 )

[0031] =8437.4A

[0032] The time required to remove the electrolyte in the last tank to 1g / L after the liquid feeding is stopped is:

[0033] t=

[0034] =[3m 3 ×(2-1)Kg / m 3 ]÷(8437.4A×50%×1.1852g / A·h×10 -3 )

[0035] =0.6h

[0036] In this embodiment, the electrolyte is removed through the main liquid inlet pipe into the first electrowinning tank, and then energized and sequentially removed ...

example 2

[0039] Example 2: There are 8 electrowinning cells in one group, and the liquid intake in each group is 2.5m 3 / h, the copper content in the electrolyte is 24g / L (converted to 24kg / m 3 ) The average current efficiency is calculated as 80%, and the volume of electrolyte stored in the last tank is 2.5m 3 , its copper content is 3g / L (converted to 3 kg / m 3 ) The target value of copper content in the final solution is set to 1g / L (converted to 1 Kg / m 3 ) The current intensity that needs to pass is:

[0040] I=

[0041] = (2.5m 3 / h×24 Kg / m 3 )÷(80%×1.1852g / A·h×8×10 -3 )

[0042] =7910A

[0043] The time required to remove the electrolyte in the last tank to 1g / L after the liquid feeding is stopped is:

[0044] t=

[0045] =[2.5m 3 ×(3-1)Kg / m 3 ]÷(7910A×80%×1.1852g / A·h×10 -3 )

[0046] =0.67h

[0047]In this embodiment, the electrolyte is removed through the main liquid inlet pipe into the first electrowinning tank, and then energized and sequentially removed ...

example 3

[0049] Example 3: There are 10 electrowinning cells in one group, and the liquid intake in each group is 2m 3 / h, the copper content in the electrolyte is 22g / L (converted to 22kg / m 3 ) The average current efficiency is calculated as 65%, and the volume of electrolyte stored in the last tank is 3m 3 , its copper content is 5g / L (converted to 5 kg / m 3 ) The target value of copper content in the final solution is set to 1g / L (converted to 1 Kg / m 3 ) The current intensity that needs to pass is:

[0050] I=

[0051] = (2 m 3 / h×22 Kg / m 3 )÷(65%×1.1852g / A·h×10×10 -3 )

[0052] =5711.5A

[0053] The time required to remove the electrolyte in the last tank to 1g / L after the liquid feeding is stopped is:

[0054] t=

[0055] =[3m 3 ×(5-1)Kg / m 3 ]÷(5711A×65%×1.1852g / A·h×10 -3 )

[0056] =2.727h

[0057] In this embodiment, the electrolyte is removed through the main liquid inlet pipe into the first electrowinning tank, and then energized and sequentially removed t...

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Abstract

A process for the deep copper removal through electrodeposition is characterized in that an electrolyte enters a first electrodeposition tank through a primary solution inlet tube for removal, enters a plurality of electrodeposition tanks sequentially and undergoes pipelining copper removal through power-on to make copper in the electrolyte be deposited on copper plates in the electrodeposition tanks, and the process concretely comprises the following steps: 1, filing certain amounts of a final discharge solution into the last two electrodeposition tanks to prepare an electrolyte having a copper content of 2-5g / L, closing the primary solution inlet tube, powering on the electrodeposition tanks for a period of time, and opening the primary solution inlet tube and a solution discharge tube for sequential copper removal, wherein the access of the solution to the electrodeposition tanks is stopped a certain period of time before the power-off in the completion of a production period; 2, heating the electrolyte to 60-65DEG C; and 3, arranging a flow control valve on the primary solution inlet tube, and setting a current according to a flow. The process has the advantages of reduction of the copper metal loss in traditional processes, substantial increase of the metal recovery rate, reduction of the power consumption, saving of the production cost, and suitableness for the improvement of an induction copper removal technology.

Description

technical field [0001] The invention relates to a non-ferrous metal extraction and processing technology, in particular to a production method for electrowinning deep copper removal. Background technique [0002] At present, the decopper method of the electrolyte is mainly based on the induction method, which is characterized by heating the electrolyte with a copper content of 20-25g / L to 53-55°C and entering the first electrode from the main liquid inlet pipe. After removal in the accumulating tank, enter the second electrodepositing tank for removal, and then enter the third, fourth, fifth, and sixth electrowinning tanks for removal (according to production capacity and other conditions, there can be more Generally, a group or a series is 5-12 tanks); at the same time, an auxiliary liquid supply pipeline can be set to replenish liquid in the second and fourth electrowinning tanks. After the above-mentioned removal, the electrolyte is removed by the fifth and sixth electro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25C1/12
CPCY02P10/20
Inventor 李东
Owner 李东
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