Large-scale aluminium electrolysis pre-baking tank

A technology of aluminum electrolysis and pre-baking tank, which is applied in the field of electrolytic tank structure, which can solve the problems of unbalanced negative pressure, difficulty in forming the furnace side, and large air leakage area, so as to eliminate gaps, uniform negative pressure and improve gas collection efficiency Effect

Inactive Publication Date: 2006-04-26
NORTHEASTERN UNIV ENG & RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hoists are all installed above the solid web beams, and the entire upper structure has too many exposed mounting parts, which looks very messy, and the special equipment is not specially designed, which is not conducive to inspection and maintenance
[0008] (2) The airtight design of the electrolytic cell is single, and there are many problems
[0009] The gas collection structure design of the electrolytic cell adopts the same form from the small pre-baked tank to the large pre-baked tank. The flue layout is unscientific, the cover plate design is unreasonable, and there are also problems of p

Method used

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  • Large-scale aluminium electrolysis pre-baking tank
  • Large-scale aluminium electrolysis pre-baking tank
  • Large-scale aluminium electrolysis pre-baking tank

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Embodiment Construction

[0032] Below in conjunction with accompanying drawing and embodiment, content of the present invention is further described and supplemented:

[0033] The upper structure of the electrolytic cell of the present invention is composed of an anode carbon block group 9, an anode bus bar 5, a shelling and feeding device 8, an anode lifting mechanism 7, a column girder 4, and a cell airtight exhaust system 10 and 12.

[0034] like figure 1 , 2 As shown, the following uses a 300KA electrolytic cell as an example to describe in detail. In fact, this design scheme can also be applied to large-scale aluminum electrolytic prebaked cells of 280KA to 330KA.

[0035] 1. The upper structure of the electrolytic cell:

[0036] 1) Anode carbon block group 9

[0037] The anode carbon block group consists of aluminum conductive rods, steel claws and anode carbon blocks. The double anode form is adopted, which is characterized in that two anode carbon blocks are assembled together by an alumin...

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Abstract

The large aluminum electrolyzing pre-roasting tank includes anode carbon block combination, anode bus, breaking and feeding unit, anode elevating mechanism, crossbeam and portal upright, tank sealing air exhaust system, tank casing, cathode structure and bottom heat insulating structure. It features the double anode structure comprising two anode carbon blocks assembled through aluminum rod and steel pawl; the elevator installed below the top surface of the crossbeam; the tank sealing air exhaust system set inside the crossbeam; and the cathode with surround casing, carbon block with bottom composite heat insulating layer, side silicon nitride to combine silicon carbide blocks and surrounding cast material. The present invention has improved structure resulting in raised fume collecting efficiency, reasonable gas flow distribution and smooth aluminum electrolyzing process.

Description

technical field [0001] The invention belongs to the technical field of the structure of an electrolytic cell, which is the core equipment for the electrolytic production of metal aluminum by molten liquid electrolysis, and specifically relates to a new large-scale prebaked aluminum electrolytic cell. Background technique [0002] The existing prebaked electrolyzer is roughly composed of superstructure and cathode structure. [0003] The upper structure is composed of anode carbon block group, anode busbar, shelling and feeding device, anode lifting mechanism, girder, door-shaped column and slot airtight exhaust system, etc. The main structure is the door-shaped column solid web beam support structure. The solid web beam on the upper part of the electrolytic cell is supported by square columns processed by four square steel pipes, and the steel columns are hinged with the tank shell; the solid web beam is a steel plate welded component, and the section is I-shaped steel, whic...

Claims

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Application Information

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IPC IPC(8): C25C3/08
Inventor 吕定雄毛继红董慧马成贵马绍先杨青辰王兴明
Owner NORTHEASTERN UNIV ENG & RES INST CO LTD
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