Alternating current arc smelting furnace

Abstract

The invention discloses an alternating current arc smelting furnace which is mainly composed of a furnace body (1) and a furnace cover (2). The furnace cover (2) is located on the top of the furnace body (1) and provided with a raw material feeding port (21) and an auxiliary material feeding port (22). The furnace body (1) is of a cylinder structure, and a three-phase alternating current electrode (3) is arranged on the bottom of the furnace body (1) and is of a circular ring shape formed by three fan-shaped structures in an enclosing manner. When adopted for smelting quartz stone, basalt, blast-furnace slag, dolomite, limestone and the like, the alternating current arc smelting furnace has the beneficial effects of being low in energy consumption, free of pollution and easy to operate. Meanwhile, as the furnace bottom slag overflow technology operation is adopted, scouring to electric-arc furnace refractory materials in the feeding process is reduced, and the continuous service life of the refractory materials is ensured.

Description

technical field [0001] The invention belongs to the field of smelting equipment and relates to an AC arc melting furnace. Background technique [0002] The production of rock wool, glass and other products requires processing of quartz stone, basalt, blast furnace slag, dolomite, limestone, etc. after high-temperature melting. Due to the electrical conductivity of the material, the traditional process uses flame heating such as gas furnace or even coke heating. The cupola is heated and smelted, which consumes a lot of energy and causes serious pollution, and the smelting operation is difficult to master. At present, most domestic enterprises adopt the electric arc furnace steelmaking method. The electric arc furnace is referred to as EAF steelmaking, which uses electric energy as the heat source for steelmaking. A steelmaking method that heats and melts metal charge and slag under the direct action of arc radiation and electric arc, and smelts various qualified steel and al...

AI Technical Summary

Problems solved by technology

Traditional steelmaking electric arc furnaces use graphite electrodes or carbon electrodes, which generate an arc between the electrode and the furnace material, and then increase the temperature to melt the ore. However, the above-mentioned raw materials have low conductivity and poor arc ignition performance. , cannot be directly applied to smelting the above raw materials

In addition, the traditional electric arc furnace is smelted according to the number of furnaces, and the frequent changes of hot and cold materials and the period of charging have a serious impact on the life of the refractory material of the furnace material.

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