Device for controlling acidity of electrodeposition solution and method thereof

A control method and electrowinning technology, which is applied in the direction of electrolysis process, electrolysis components, process efficiency improvement, etc., can solve the problems of solution pipe bursting, electrolytic tank bursting, etc., and achieve the effect of reducing the concentration of hydrogen ions and reducing risks

Pending Publication Date: 2020-06-19
GEM JIANGSU COBALT IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, when the acidity is higher than 0.07mol/L, hydrogen ions in the solution are also electro-deposited during the cobalt electrowinning process to generate hydrogen gas. When the hydrogen

Method used

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  • Device for controlling acidity of electrodeposition solution and method thereof
  • Device for controlling acidity of electrodeposition solution and method thereof
  • Device for controlling acidity of electrodeposition solution and method thereof

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Embodiment 1

[0024] Embodiment 1 of the present invention provides a device for controlling the acidity of the electrowinning solution, referring to Figure 1-3 , including electrowinning tank 1, raffinate pipeline 2, raffinate tank 3, nitrogen pipeline group 4 and nitrogen storage tank 5, electrowinning tank 1 communicates with raffinate tank 3 through raffinate pipeline 2, and raffinate pipeline 2 also passes nitrogen gas The pipeline group 4 communicates with the nitrogen storage tank 5, and the nitrogen pipeline group 4 is used to feed nitrogen gas into the raffinate pipeline 2 to squeeze out the chlorine gas in the electrowinning residual liquid.

[0025] A liquid inlet pipe 6 is also included, and the liquid inlet pipe 6 is arranged on one side of the residual liquid pipeline 2 for communicating with the electrowinning tank 1 and the residual liquid pipeline 2 .

[0026] The nitrogen pipe group 4 includes an inner nitrogen pipe 41 and an outer nitrogen pipe 42, the inner nitrogen pip...

Embodiment 2

[0037] Embodiment 2 of the present invention provides a control method for controlling the acidity of the electrowinning solution. The method adopts a device for controlling the acidity of the electrowinning solution as described in Embodiment 1. The method is: along the nitrogen pipeline group 4 to the residual Nitrogen gas is fed into the liquid pipeline 2; the content of chloride ions in the electrowinning residual liquid is controlled by controlling the amount of nitrogen gas; the residual liquid in the residual liquid pipeline 2 and the residual liquid tank 3 is controlled according to the content of the chloride acidity.

[0038] Specifically: the nitrogen gas in the inner nitrogen pipe 41 and the outer nitrogen pipe 42 blows nitrogen gas into the residual liquid in the residual liquid pipeline 2 along the nitrogen gas outlet hole 411 and the nitrogen gas inlet hole 21 on the pipe surface respectively, so that the residual liquid in the residual liquid is " Boiling", so ...

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Abstract

The invention discloses a device for controlling the acidity of an electrodeposition solution and a method thereof. The device comprises an electrodeposition tank, a residual solution pipeline, a residual solution tank, a nitrogen gas pipeline group and a nitrogen gas storing tank; the electrodeposition tank communicates with the residual solution tank through the residual solution pipeline; the residual solution pipeline communicates with the nitrogen gas storing tank through the nitrogen gas pipeline group; and the nitrogen gas pipeline group is used for introducing nitrogen gas into the residual solution pipeline to extrude out chlorine gas in electrodeposition residual solution. According to the device for controlling the acidity of the electrodeposition solution and the method thereof, the chlorine gas in the residual solution is extruded out through a nitrogen gas explosion method, the content of the chlorine gas in the residual solution is controlled by controlling the introduced nitrogen gas amount, then the acidity of the electrodeposition residual solution is controlled, and the acidity of the electrodeposition residual solution meets the requirement; and in addition, theintroduced nitrogen gas can quickly bring out produced hydrogen gas, the gas volume in the system is increased as introduction of the nitrogen gas, the diluting effect on the concentration of the produced hydrogen gas can be achieved, therefore, the concentration of hydrogen ions produced through hydrogen explosion is decreased, and then the hydrogen explosion generation risk is reduced.

Description

technical field [0001] The invention belongs to the technical field of acidity control of electrowinning solution, and in particular relates to a device and method for controlling the acidity of electrowinning solution. Background technique [0002] In the production process of electrowinning cobalt, the acidity range of the electrowinning solution is very strict, usually requiring an acidity of 0.03 to 0.07 mol / L. When the acidity is lower than 0.03 mol / L, cobalt ions are easily hydrolyzed to form "anode slime". Anode mud is easy to adhere to the cathode plate, that is, the cobalt plate, causing the cobalt plate to grow “tumor”, “shell delamination”, dark color, and content drop. bright. [0003] However, when the acidity is higher than 0.07mol / L, hydrogen ions in the solution are also electro-deposited during the cobalt electrowinning process to generate hydrogen gas. When the hydrogen gas reaches the minimum concentration of "explosion" in the pipeline, a "hydrogen explo...

Claims

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Application Information

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IPC IPC(8): C25C1/08C25C7/06
CPCC25C1/08C25C7/06Y02P10/20
Inventor 李炳忠张爱青伍一根王博许东伟史齐勇
Owner GEM JIANGSU COBALT IND CO LTD
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