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Non-stick electrolyte crust breaking hammer head for producing electrolytic aluminum

A technology of shelling hammer and electrolyte, which is applied in the field of electrolytic aluminum production equipment to achieve the effects of stable concentration, reduced labor intensity, and energy saving

Inactive Publication Date: 2017-08-29
李清 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims at the problem of "cucurbit head" caused by common carbon steel or alloy steel material for shelling hammer heads in the prior art, and provides a non-stick electrolyte shelling hammer head for electrolytic aluminum production, which perfectly solves the problem The problem of electrolyte sticking to the long bag. In addition, non-metallic materials are used as the substrate. The composite coating and the substrate do not contain harmful elements that affect the quality of electrolytic aluminum. They have high temperature resistance and corrosion resistance. ℃ The anti-oxidation, anti-corrosion and anti-wear properties of the electrolyte contact part can fundamentally prevent iron elements from entering the aluminum liquid

Method used

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  • Non-stick electrolyte crust breaking hammer head for producing electrolytic aluminum
  • Non-stick electrolyte crust breaking hammer head for producing electrolytic aluminum
  • Non-stick electrolyte crust breaking hammer head for producing electrolytic aluminum

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Such as figure 1 As shown, a non-stick electrolyte shelling hammer used for the production of electrolytic aluminum, the shelling hammer includes a hammer body 1 and a hammer handle 2 coaxially connected with a guide connecting rod. The guide connecting rod is connected with the shelling cylinder The connecting rod connected to the piston rod (omitted in the drawings), the material of the hammer handle 2 is suitable for meeting the temperature requirements above 960°C, the top of the hammer handle 2 is welded to the guide connecting rod, and the material of the hammer body 1 is High-purity graphite (carbon content of graphite >99.9%, the same below), high-purity graphite has the advantages of high strength, good thermal shock resistance, high temperature resistance, oxidation resistance, corrosion resistance, etc., and meets the process requirements of shelling. The head of the hammer body 1 is spherical, the hammer handle 2 is rod-shaped and the outer peripheral wall o...

Embodiment 2

[0032] Such as figure 2 As shown, a non-stick electrolyte shelling hammer for the production of electrolytic aluminum, the shelling hammer includes a hammer body 1 and a hammer handle 2 coaxially connected with the guide connecting rod, and the material of the hammer body 1 is High purity graphite. The hammer handle 2 is rod-shaped, and the hammer body 1 is in the shape of a bullet as a whole. The hammer body 1 and the hammer handle 2 are arranged coaxially. Combined into one body, the hammer body 1 and the hammer handle 2 are combined into one body through threaded connection.

Embodiment 3

[0034] Such as image 3 As shown, the difference between embodiment 3 and embodiment 2 is that the hammer body 1 is made of amorphous carbon material, the head of the hammer body 1 is in the shape of a cone, and the hammer body 1 is coated with a composite coating 4. The composite coating is made by mixing 20-30 parts by weight of zirconia, 60-70 parts by weight of alumina and 3 parts by weight of aluminum dihydrogen phosphate.

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Abstract

The invention provides a non-stick electrolyte crust breaking hammer head for producing electrolytic aluminum. The crust breaking hammer head comprises a hammer body, and the part, contacted with electrolyte, of the hammer body at least in crust breaking is made of any one of a carbon material and silicon carbide bonded silicon nitride. The problem of sticking and lump generation of electrolyte can be completely solved, in addition, a non-metal material is adopted as a matrix and neither a compound coating nor the matrix contains harmful elements influencing the mass of electrolytic aluminum, so that the non-stick electrolyte crust breaking hammer head is high-temperature-resistant and corrosion-resistant, not only can the anti-oxidative, corrosion-resistant and wear-resistant performances of the part, contacted with 920-960DEG C electrolyte, of the lower part of the hammer head be met, but also iron element can be fundamentally prevented from entering molten aluminum.

Description

technical field [0001] The invention belongs to the technical field of electrolytic aluminum production equipment, and in particular relates to a non-stick electrolyte shelling hammer used for electrolytic aluminum production. Background technique [0002] At present, the pre-baked electrolytic cell alumina blanking adopts automatic intermediate point blanking, and each electrolytic cell is generally equipped with three to six Q235 steel shelling hammers for alternate shelling and blanking, and the shelling cylinder is controlled by a solenoid valve. The hammer head breaks the hard crust on the surface of the electrolyte to form holes, which serve as the feeding point of alumina. This method can well realize the automatic control of alumina feeding, but according to the process requirements, each shelling hammer has to hit about 1400 times a day and night, and each shelling must rub against the shell and soak in the electrolyte 2-3 seconds, frequent shelling actions will ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C3/14
Inventor 李清宋建峰
Owner 李清
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