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Device and process for inductively suppressing acid mist from electrowinning

a technology of electrowinning and electrowinning acid, which is applied in the field of electroplating, electroplating and chemical engineering, can solve the problems of corroding factories and equipment, polluting operation sites and environments, and affecting production efficiency, so as to eliminate the pollution of acid mist and clean production

Inactive Publication Date: 2016-11-10
HANGZHOU SANAL ENVIRONMENTAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention is a device that prevents acid mist from occurring during electrochemical reactions. It helps to create a cleaner production process and reduces acid mist pollution.

Problems solved by technology

As the solution is acidic, a plenty of acid mist is formed above the cell surface, which damages health of operation personnel, pollutes operation sites and the environments.
This also corrodes factories and equipment, and increases the consumption of reagents.
Both the above methods are all post-treatment processes with complex operations, high processing cost and low efficiency.
However, this method has a problem that the foam balls can be easily stuck to the polar plate and pipes can be easily blocked.
Therefore, the acid mist prevention effect is not desirable.
In addition, its operations are complex and costly.
The problems of this method include high production cost and unstable suppression efficiency due to failure of the suppression agents.
In addition, some additives will affect the product quality.
Although this method can prevent formation of acid mist, as the anode is completely wrapped by the isolation cloth, flowing of the electrolysis liquid is hindered such that the voltage in the cell increases and power consumption increases.
In addition, because the anode is completely wrapped by the isolation cloth, plenty of gas gathers around the conductive beam of the anode such that the corrosion rate of the conductive beam of the anode is increased and thereby shortening the service life of the anode.

Method used

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  • Device and process for inductively suppressing acid mist from electrowinning
  • Device and process for inductively suppressing acid mist from electrowinning
  • Device and process for inductively suppressing acid mist from electrowinning

Examples

Experimental program
Comparison scheme
Effect test

embodiment i

[0048]FIG. 1 shows a device for inductively suppressing acid mist from electrowinning which comprises a polar plate 1.

[0049]As shown in FIGS. 2-3, a first isolation net 3 and a second isolation net 4 are respectively provided at the left and right sides below the top of the polar plate 1. The first isolation net 3 and the left side of the polar plate 1 are connected by a first insulating connecting member 10 and the second isolation net 4 and the right side of the polar plate 1 are connected by a second insulating connecting member 11. Gaps are provided between the first and second isolation nets 3, 4 and the left and right sides of the polar plate respectively.

[0050]As shown in FIGS. 2-3, a first isolation piece 5 and a second isolation piece 6 are respectively provided to the left and right sides of the top of the polar plate 1 by a fixing assembly and the first isolation piece 5 and second isolation piece 6 are respectively located above the first and second isolation nets 3, 4. ...

embodiment ii

[0058]This embodiment is basically the same as Embodiment I. The only difference is that this embodiment defines the hanging buckle as below:

[0059]As shown in FIG. 8, the hanging buckle 2 comprises a hanging member 2.1 having a triangular section, a first buckle plate 2.2 and a second buckle plate 2.3 at two sides of the bottom of the hanging member 2.1 respectively. The inner sides of the first buckle plate 2.2 and the second buckle plate 2.3 are provided with a fastener 2.4 respectively. The fastener 2.4 cooperates with a fastener installation hole 7.1 at the top of the outer frame 7. The conductive bar 1.1 of the polar plate 1 is inserted in a hollow chamber of the hanging member 2.1. By using the above structure, the hanging buckle 2 has a simple structure, mounting between the outer frame 7 and the conductive bar 1.1 can be facilitated and the diaphragm cloth 9 can be fixed such that a certain distance is kept between the diaphragm cloth 9 and the polar plate 1. This can improv...

embodiment iii

[0061]This embodiment is basically the same as Embodiment I and it differs from Embodiment I as follows:

[0062]An upper portion of the polar plate 1 is provided with a stopper plate that is spirally inclined downwards, such that the acid mist blocked by the stopper plate condenses and flows back to the electrochemical reaction cell, which can help prevent formation of acid mist on the cell surface.

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Abstract

The present invention discloses a device for inductively suppressing acid mist from electrowinning. The device comprises a polar plate. A first isolation net and a second isolation net are respectively provided at two sides of the polar plate. Gaps are left between the first and second isolation nets and the two sides of the polar plate respectively. A first isolation piece and a second isolation piece are respectively provided to two sides of a top of the polar plate and are respectively located above the first and second isolation nets. The present invention also discloses a process for inductively suppressing acid mist from electrowinning by using the above device. The acid mist suppressing device and process of the present invention can prevent formation of acid mist during an electrowinning process so that pollution of acid mist can be eliminated and clean production can be realized.

Description

TECHNICAL FIELD[0001]The present invention relates to fields of hydrometallurgy, electroplating and chemical engineering, and particularly to a device and process for inductively suppressing acid mist from electrowinning.BACKGROUND ART[0002]At present, during production in the fields of hydrometallurgy, electroplating and chemical engineering, a plenty of gas is generated due to electrochemical reactions at the cathode and anode. When the gas precipitates from the polar plates, it adheres to the surface of the electrodes in the primary stage. As bubbles grow such that buoyance of the bubbles is greater than the adhering force, the bubbles are released from the polar plates and flow upwards from the solution. When the bubbles reach surface of the liquid, they will certainly carry liquid due to liquid surface tension. When the bubbles carrying the liquid encounter cold air at the cell surface, they burst to form mist. As the solution is acidic, a plenty of acid mist is formed above th...

Claims

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Application Information

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IPC IPC(8): C25C7/04C25C1/10C25C1/08C25C1/12C25C1/16
CPCC25C7/04C25C1/12C25C1/10C25C1/08C25C1/16C25D17/10C25D21/04C25C7/06
Inventor LIN, JIANPINGSHI, WENTANGSHEN, XIANGFENGLUO, CHENG
Owner HANGZHOU SANAL ENVIRONMENTAL TECH