Large energy-saving submerged arc furnace

Abstract

The invention discloses a large energy-saving submerged arc furnace, and relates to the technical field of energy conservation of submerged arc furnaces. The large energy-saving submerged arc furnacecomprises a submerged arc furnace and a cantilever, wherein three electrodes are installed in a position, which is over against the submerged arc furnace, of the cantilever, the three electrodes penetrate through the submerged arc furnace and extend to the inner bottom end of the submerged arc furnace, a high-temperature smoke pipeline penetrates through the top end of the submerged arc furnace, an exhaust fan communicates with an air outlet of the high-temperature smoke pipeline, and a mineral aggregate box communicates with the air outlet end of the exhaust fan through a ventilating pipe. According to the large energy-saving submerged arc furnace, heat generated by the submerged arc furnace is collected and reused, so that ore materials can be preheated, the influence on the temperaturedistribution in the submerged arc furnace is low, the internal temperature of the submerged arc furnace is constant, and the performance of metal obtained by smelting is good; generated waste heat canbe exchanged through a heat exchange box for power generation, generated electric energy is supplied to the submerged arc furnace, and cold water in a heating box can be heated and is supplied for everyday life of workers, so that the energy consumption is reduced, and the waste heat utilization and energy utilization rate is increased.

Description

technical field [0001] The invention belongs to the technical field of energy-saving submerged arc furnaces, in particular to a large-scale energy-saving submerged arc furnace. Background technique [0002] Submerged arc furnace, also known as electric arc furnace, is an industrial electric furnace with huge power consumption. It uses carbon as a reducing agent to reduce and smelt metal ores. It is mainly used to produce ferrosilicon, ferromanganese, ferrochrome, ferrotungsten, and silicon-manganese alloys. It is an important equipment commonly used in the metallurgical industry. [0003] The submerged arc furnace will produce a large amount of high-temperature flue gas during the working process, and the raw materials discharged from the submerged arc furnace will also emit a large amount of heat. This heat will directly spread to the surrounding working environment, which not only makes the working environment temperature rise rapidly, but also It is not conducive to the ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a large-scale energy-saving submerged arc furnace. By collecting and reusing the heat generated by the submerged arc furnace, the problems of unreasonable energy utilization and serious energy waste in the existing submerged arc furnace are solved.

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