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Baking start-up method for large scale special-shaped cathode aluminium electrolytic cell

A technology of roasting start-up and aluminum electrolytic cell, which is applied in the field of aluminum electrolysis to achieve the effect of improving safety performance, high success rate, and avoiding aluminum filling

Active Publication Date: 2010-05-19
广西来宾广投银海铝业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a large-scale special-shaped cathode aluminum electrolytic cell roasting starting method that can solve the existing problems of the existing special-shaped cathode, high efficiency, energy saving and safe start-up of the electrolytic cell

Method used

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  • Baking start-up method for large scale special-shaped cathode aluminium electrolytic cell
  • Baking start-up method for large scale special-shaped cathode aluminium electrolytic cell
  • Baking start-up method for large scale special-shaped cathode aluminium electrolytic cell

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Embodiment

[0068] The applicant installed a total of 6 sets of 330KA large-scale special-shaped cathode test electrolyzers in July 2009. The first electrolysis workshop and the second electrolysis workshop respectively used the method of the present invention to successfully start the special-shaped cathode electrolytic cell, which is currently the largest current special-shaped cathode electrolytic cell in China.

[0069] Specific steps:

[0070] Preparations for pole hanging: a scraper ruler, a coke grain frame, 2 aluminum baffles, some iron cover plates in the middle seam, a flashlight, 2 tons of graphite powder with a particle size of 1-2mm, petroleum coke particles with a particle size of 2-4mm 0.7 tons, one multifunctional crane, and 4 electrolysis workers.

[0071] a. Check and debug the functional mechanisms of the electrolytic cell, and after confirming that there is no error, lower the anode busbar to the lower limit and start hanging the pole.

[0072] b. Use high-pressure a...

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Abstract

The invention discloses a baking and start-up method for a large scale special-shaped cathode aluminium electrolytic cell, which makes full use of a cathode of a special-shaped electrolytic cell. The baking start-up method is characterized by comprising the steps of selection of baking materials, charging of a special-shaped cathode electrolytic cell and baking start-up of the special-shaped cathode electrolytic cell. The method saves energy and starts the electrolytic cell safely without using natural gas or liquid gas, effectively avoids pouring aluminium, blocks a leakage passage of the aluminium liquid fundamentally, greatly improves the safety performance of starting the electrolytic cell, has simple operation, no need of various electrical control console, low cost and high success rate by adopting the wet electrolyte start-up, and is suitable for the baking start-up of the large scale special-shaped cathode aluminium electrolytic cell.

Description

technical field [0001] The invention relates to an aluminum electrolysis method, in particular to a method for starting roasting of an energy-saving special-shaped cathode aluminum electrolytic cell. Background technique [0002] The structure and principle of aluminum electrolytic cell roasting start: [0003] The aluminum electrolytic cell is a furnace made of carbon materials. The production of electrolytic aluminum is to carry out electrochemical reactions in this carbon material furnace. Since the production operating temperature is as high as 950 degrees, the carbon at room temperature needs to be The temperature of the material melting furnace is gradually raised and then roasted. After reaching a certain temperature above 700-850 degrees, it is necessary to quickly switch the roasted furnace to start and start the intense electrochemical reaction process. [0004] At present, there are three roasting start-up methods in the aluminum industry, namely, molten aluminum...

Claims

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Application Information

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IPC IPC(8): C25C3/06
Inventor 林琳刘传辉孙学勇王献合曾建华熊斌张峰王刚
Owner 广西来宾广投银海铝业有限责任公司