Automatic roasting device of electrolytic bath

Abstract

The invention discloses an automatic roasting device of an electrolytic bath, comprising a temperature sensor, a temperature-controlled meter, a PID (Piping and Instruments Diagram) combustion controller, a pulse combustion controller, a main fuel pipeline, a control valve bank of the main fuel pipeline, a gas storing tank of the main fuel pipeline, a branch fuel pipeline, a control valve bank of the branch fuel pipeline, a combustion-supporting air device, a branch combustion-supporting air pipeline and a control valve bank of the branch combustion-supporting air pipeline. The automatic roasting device has the advantages of changing a method for starting the electrolytic bath by electrically heating and roasting instead of starting by roasting and heating the fuel, not only having short starting period, small energy consumption and cost saving, but also directly roasting and heating the fuel, being easy to adjust and control the temperature rise speed of the electrolytic bath in the starting process, keeping the uniform distribution of the required temperature, effectively overcoming the defects of large temperature gradient, small thermal shock and small expansion stress when a high-temperature liquid enters the electrolytic bath, avoiding the problem of influencing service life of the aluminum electrolytic bath due to nonuniform heating and the damage of a cathode carbon and greatly prolonging the service life of the electrolytic bath.

Description

Technical field: [0001] The invention relates to a roasting device, in particular to an automatic roasting device for an electrolytic cell. Background technique: [0002] The electrolysis process is the metal obtained by electrolysis, generally using carbon as the anode [0003] (Pre-baked anode block), after direct current is passed through, at 940°C-970°C, an electrochemical reaction is carried out on the two poles of the electrolytic cell, that is, electrolysis. The cathode product is molten metal, which is extracted from the tank by vacuum ladle and sent to the foundry. After purification and clarification in the mixing furnace, it is poured into metal ingots, or produced into wire billets, profiles, etc. [0004] The entire electrolysis process is completed in the electrolytic cell. In the prior art, when starting, the electrolytic cell is dried by electric heating and then started. The start-up time is generally 7-8 days, which consumes a lot of energy and has a long ...

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Problems solved by technology

[0004] The entire electrolysis process is completed in the electrolytic cell. In the prior art, when starting, the electrolytic cell is dried by electric heating and then started. The start-up time is generally 7-8 days, which consumes a lot of energy and has a long cycle.

Moreover, the high-temperature liquid directly enters the electrolytic cell, resulting in large thermal shock, large temperature gradient, and large expansion stress, resulting in damage to the carbon lining of the cathode, which has a direct adverse effect on the life of the electrolytic cell.

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