A kind of preparation method of anode plate for electrolytic manganese dioxide

A technology of electrolytic manganese dioxide and anode plate, applied in the direction of electrodes, electrolytic components, electrolysis process, etc., can solve the problems of anode strip shape distortion, not in one plane, affecting electrolysis process, etc., achieve stable geometry, increase production, The effect of high overall strength

Active Publication Date: 2020-07-03
有研资源环境技术研究院(北京)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since a plurality of composite anode strips are assembled by welding and cast aluminum cross-arm processing to obtain the anode plate, the shape of the anode strip is distorted during the production process. Although it has been shaped, the final anode plate is still not in the same plane. During the electrolysis process due to heat and The uneven force of the knocking of the unloading material again causes a large distortion of the anode plate, which seriously affects the electrolysis process

Method used

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  • A kind of preparation method of anode plate for electrolytic manganese dioxide
  • A kind of preparation method of anode plate for electrolytic manganese dioxide

Examples

Experimental program
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Effect test

Embodiment 1

[0021] The metal mixed powder components are titanium and manganese, and the weight percentages of each component are as follows: titanium: 50%, manganese: 50%, the metal powder is mixed with polyvinyl alcohol glue to form a slurry, and the slurry is placed in the spray gun storage tank, passed High-pressure gas pressurizes, sprays out from the gun nozzle, and finally evenly adheres to the surface of the titanium strip.

[0022] The surface of the titanium plate coated with metal mixed powder slurry is placed in a normal temperature vacuum storage tank after natural drying, and the vacuum is evacuated to 10 -3 After Pa is filled with argon gas protection, and then pulled, the titanium plate coated with metal powder on the surface is heated through a constant temperature heating furnace (furnace temperature 1300°C) located directly above the vacuum storage tank, and the pulling speed is 10cm / min. After that, it is quickly pulled to the cold well directly above the constant temp...

Embodiment 2

[0032] The other process conditions are the same as in Example 1. The cast aluminum cross arm of the anode plate is vertically suspended on the detection frame, and the deformation amount is determined according to the offset amount corresponding to the detection scale, and the deformation amount is within ±25mm.

[0033] Place the anode plate on the shaping platform, apply an external force consistent with the previous deformation, and refer to the attached figure 2. In the figure: F1 and F2 are the adjustment external forces applied to both ends of the cast aluminum cross-arm; F3 and F4 are the external forces applied to the cast aluminum cross-arm by the shaping platform. The method of applying external force at four points of the cast aluminum cross arm is used to achieve the expected deformation. Finally, hang the anode plate on the detection frame again to detect the deformation. If the deformation is within ±3mm, the correction and shaping will be completed; if the def...

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Abstract

The invention belongs to the technical field of preparing of anode plates used for electrolyzing and discloses a preparing method for an anode plate for electrolyzing manganese dioxide. The preparingmethod includes the following steps that firstly, the surface of a titanium plate is coated with metal powder; secondly, after sintering, composite anode bars with titanium formed in the middle and alloy coatings formed on the surfaces are formed by the titanium plate; thirdly, the composite anode bars obtained in the second step are shaped; and fourthly, the multiple composite anode bars obtainedin the third step are reprocessed to obtain the anode plate. The prepared anode plate can also be corrected and shaped. Thus, external force is applied to four points of an aluminum casting cross armso that the whole electrode plate can generate pre-tensioning force, the anode plate is corrected and shaped, and the plane torsion resistance of the whole anode plate is controlled to be within + / -3mm after shaping is completed.

Description

technical field [0001] The invention belongs to the technical field of anode plate preparation for electrolysis, and in particular relates to a method for preparing an anode plate for electrolytic manganese dioxide and a method for correcting and shaping the anode plate. Background technique [0002] With the continuous demand for new energy, the battery industry at home and abroad has developed rapidly, and the production of high-performance mercury-free alkaline zinc-manganese batteries is the focus of the development of the battery industry. As the anode material of batteries, manganese dioxide directly affects the development of the battery industry. The process of preparing manganese dioxide can be divided into natural manganese dioxide (NMD), electrolytic manganese dioxide (EMD) and chemical manganese dioxide (CMD). Manganese dioxide was prepared earlier using natural manganese dioxide, but with the increasing depletion of resources, the preparation process is difficu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B1/21C25B11/10
CPCC25B1/21C25B11/051
Inventor 张恒沈化森彭程石志霞白雪刘宇阳储茂友
Owner 有研资源环境技术研究院(北京)有限公司
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