Cathode carbon block group preheating device

Abstract

The invention relates to the field of aluminum electrolytic cell cathode carbon block group assembly equipment, in particular to a preheating device used for assembling cathode carbon block groups through the phosphorus pig iron casting method. The device comprises a heating furnace body, a base and a control system. Heating nozzles are arranged in the position, corresponding to a cathode steel bar vertical projection region, of the upper portion of the heating furnace body. The heating nozzles are used for directly heating cathode steel bars. Cathode carbon blocks are indirectly heated through heat exchange between the cathode steel bars and the surrounding hot air. The control system conducts control by controlling the process of heating the cathode carbon block groups through heat generated by the heating nozzles. The preheating device has the following characteristics that on one hand, the device conducts heating through fuel gas and can heat the cathode carbon block groups to thesufficient and uniform temperature, and the requirements of the subsequent casting process are met; and on the other hand, the whole set of device is simple in configuration without power distributionand circulating cooling water systems, transportation is convenient, and the preheating device facilitates production in different aluminum manufacturers.

Description

technical field [0001] The invention relates to the field of equipment for assembling cathode carbon blocks of an aluminum electrolytic cell, in particular to a preheating device for assembling cathode carbon blocks by using a phosphorus pig iron casting method. Background technique [0002] Metal aluminum is mainly obtained by the Hall-Héroult molten salt electrolysis method in large-scale industrial production, that is, electrolyzing alumina dissolved in an electrolyte with molten cryolite as the main component to produce liquid metal aluminum. [0003] The direct equipment for producing metal aluminum is an aluminum electrolytic cell. The aluminum electrolytic cell is mainly composed of two parts, one part is the anode, which is usually composed of carbon materials; the other part is the cathode, which is composed of cathode carbon blocks, cathode steel rods and lining materials. . [0004] The aluminum electrolytic cell is connected in series in the whole electrolytic s...

AI Technical Summary

Problems solved by technology

Similar to the first type of equipment, once the equipment is installed and put into use, it is difficult to move to other sites for production, and cannot easily and quickly adapt to the needs of different on-site casting production

In addition, once the circulating water leaks, it will have a fatal impact on the cathode carbon block group

[0010] According to the above analysis, the existing heating equipment has problems such as high heating energy consumption, inconvenient and quick transfer of equipment, risk of leakage, and large investment.

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