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Method for preparing lead-aluminum composite anode plate

An anode plate and aluminum composite technology, applied in the field of electrolysis, can solve the problems of failure to apply industrial production practices, short service life, affecting the quality of electrolytic zinc, etc., and achieve the effect of significant power saving, good power saving and light weight.

Inactive Publication Date: 2008-02-20
YUNNAN METALLURGICAL GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Low mechanical strength, easy to deform and cause short circuit; short service life, affecting the quality of electrolytic zinc
[0003] Over the years, researchers at home and abroad have tried materials such as graphite, ferroferric oxide, manganese dioxide, lead dioxide, and titanium alloys. As a result, there are various technical problems and cannot be applied to industrial production practice.

Method used

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  • Method for preparing lead-aluminum composite anode plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] First select a pure aluminum plate with a thickness of 0.5mm, cut it into a length of 120mm and a width of 90mm, evenly distribute the holes in the middle of the aluminum plate, acid-etch the surface, remove the oxide film, then coat a layer of Zn on the surface of the aluminum plate, place it in the mold, and evenly spread the pure lead Casting around the aluminum plate to wrap the aluminum plate, the top of the aluminum plate is exposed 10mm, forming a wrapping layer, the thickness of each side of the aluminum plate is 3mm of pure lead or lead-silver alloy, the two sides and the bottom of the aluminum plate are pure lead, and its width is 3mm, the above plate is rolled, The thickness of pure lead on each side of the aluminum plate is 1 mm, and the copper conductive beams are connected and fixed on the aluminum plate to form a lead-aluminum composite anode plate.

Embodiment 2

[0017] First choose 5.0mm 6xxx series aluminum alloy plates, cut into length 2000mm and width 1000mm, acid-etch the surface of the aluminum plate to remove the oxide film, then coat a layer of Sn on the surface of the aluminum plate, hang it in the mold, and put the lead-silver alloy (silver 0.1%, The rest is lead) evenly cast around the aluminum plate to wrap the aluminum plate, the top of the aluminum plate is exposed 200mm, forming a wrapping layer, the thickness of the lead-silver alloy on each side of the aluminum plate is 25mm, the two sides and the bottom of the aluminum plate are lead-silver alloy, and its width is 25mm. Rolling is carried out so that the thickness of the lead-silver alloy on each side of the aluminum plate is 5mm, and the copper conductive beam is connected and fixed on the aluminum plate to form a lead-aluminum composite anode plate.

Embodiment 3

[0019] First choose 2.0mm 1xxx series aluminum alloy plate, cut it into length 1010mm and width 650mm, evenly distribute the holes in the middle of the aluminum plate, acid etch the surface, remove the oxide film, then coat a layer of Mg on the surface of the aluminum plate, place it in the mold, and put the lead silver Alloy (silver 0.5%, the rest is lead) is evenly cast around the aluminum plate to wrap the aluminum plate, the top of the aluminum plate is exposed 80mm, forming a wrapping layer, the thickness of the lead-silver alloy on each side of the aluminum plate is 15mm, the two sides and the bottom of the aluminum plate are lead-silver alloy, the The thickness of the lead-silver alloy on each side of the aluminum plate is 2mm, and the copper conductive beam is connected and fixed on the aluminum plate to form a lead-aluminum composite anode plate.

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Abstract

The invention relates to a lead and aluminum compound anode plate material and the preparing method, which belongs to the field of electrolysis technology. The invention adopts purified aluminum plate or aluminum alloy plate, purified lead or lead and silver alloy and copper electric conducting beam as raw materials. The invention later adopts acid corrosion operation to the purified aluminum plate or the aluminum alloy plate so as to remove an oxide film. And then the surface of the aluminum plate is plated with a layer of other metals such as Ag, Mg, Sr, Zn or Sn, and the processed purified aluminum plate or aluminum alloy is placed into a mould so as to be evenly poured with a purified lead or lead and silver alloy fluid to make out the lead and aluminum compound cathode plate blank. Finally, the lead and aluminum compound cathode plate blank is milled into the lead and aluminum compound cathode plate. The lead and aluminum compound anode plate has the advantages of fine electric conduction, possible groove voltage reduction, electric energy conservation and high intensity of the compound anode plate as well as impossible deformation.

Description

technical field [0001] The invention relates to a lead-aluminum composite anode plate material and a preparation method thereof. The invention belongs to the technical field of electrolysis. Background technique [0002] 85% of the energy consumption of electrolytic zinc production is consumed in the electrowinning process of zinc. The technical and economic indicators of the electrowinning process largely depend on the electrochemical stability and mechanical strength of the anode plate. Insoluble anode plates made of lead alloy. The mechanical strength is low, and it is easy to deform and cause short circuit; the service life is not long, which affects the quality of electrolytic zinc. [0003] Over the years, researchers at home and abroad have tried materials such as graphite, ferroferric oxide, manganese dioxide, lead dioxide, and titanium alloys. As a result, there are various technical problems and cannot be applied to industrial production practice. In fact, lead ...

Claims

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Application Information

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IPC IPC(8): C25C7/02
Inventor 杨钢王吉坤
Owner YUNNAN METALLURGICAL GROUP
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