Novel fused magnesia smelting electric arc furnace

Abstract

The invention provides a novel fused magnesia smelting electric arc furnace, which comprises a high-voltage cabinet, a transformer, a low-voltage cabinet, a programmable logic controller (PLC) operating platform, a short net, a water-cooled cable, an electrode lifting device and a graphite electrode, wherein the graphite electrode is placed in a smelting furnace positioned below the operating platform; the smelting furnace comprises a furnace barrel, a furnace body and a furnace cover; the bottom of the furnace barrel is placed on the horizontal base ground, and the top of the furnace barrel is connected with the operating platform; the furnace body is placed on a trolley and positioned in the middle of the furnace barrel; the trolley is placed on a rotary platform positioned below the horizontal base ground; the furnace cover is placed on the operating platform and covers the upper opening of the furnace body; the top of the furnace cover is provided with an automatic feeding hole connected with an automatic feeding device arranged on the operating platform and an electrode hole corresponding to the graphite electrode; and the PLC operating platform controls lifting of the graphite electrode and intermittent rotation of the rotary platform. Through the electric arc furnace, the problem of furnace charge sintering accumulation in the smelting process is effectively solved, the core part of a finished product forms a cylinder shape, the yield is increased by over 15 percent, and the power is saved by over 20 percent.

Description

technical field [0001] The invention belongs to the technical field of non-metallic electric melting and smelting, and in particular relates to a novel electric arc furnace for electric melting magnesium oxide smelting. Background technique [0002] my country is a country rich in magnesium resources, and fused magnesium is a high energy-consuming industry. Traditional equipment and process smelting methods generally adopt: hoist wire rope structure for electrode lifting, carbon steel cross arm with large resistance loss, clamper, soft twisted wire connected to cross arm short net, manual feeding, open furnace smelting without furnace cover, smoke The hood is 2 meters high from the material table, and the fume hood has a poor effect of collecting smoke and dust. This extensive smelting method consumes an astonishing amount of electricity, which can reach 3000KWh / t. At the same time, due to the limitation of traditional technology, although dust removal equipment is used, mo...

AI Technical Summary

Problems solved by technology

[0003] The technical problem solved by the present invention is to provide a new electric arc furnace for smelting magnesia. Furnace materials sintered and shed cluttered, leading to problems of furnace collapse and spraying, and the core of the finished product is formed into a cylindrical shape, the output increased by more than 15% year-on-year, and the electricity was saved by more than 20%

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