Three-phase alternating-current ore smelting furnace and method for controlling furnace condition thereof

Abstract

The invention discloses a method for controlling a furnace condition of a three-phase alternating-current ore smelting furnace. Electrodes are vertically arranged in a hearth of the three-phase alternating-current ore smelting furnace, a burden layer in the hearth is longitudinally divided into a plurality of smelting zones, the smelting zones are insulated from one another, and each smelting zone corresponds to one electrode. The invention further discloses the three-phase alternating-current ore smelting furnace which comprises the electrodes and high-temperature-resistant insulation devices. The electrodes are vertically arranged in the hearth of the three-phase alternating-current ore smelting furnace, the high-temperature-resistant insulation devices are arranged in the hearth, the corresponding burden layer of the hearth is longitudinally divided into the multiple smelting zones by the high-temperature-resistant insulation devices, accordingly, the smelting zones are insulated from one another, and each smelting zone corresponds to the corresponding single electrode. The method and the three-phase alternating-current ore smelting furnace have the advantages that the problem of influence of branch currents of a burden layer on running of an existing three-phase alternating-current ore smelting furnace can be solved by the method and the three-phase alternating-current ore smelting furnace, the stability of the furnace condition can be improved, secondary running voltages of the three-phase alternating-current ore smelting furnace can be increased, electric energy of reaction zones of lower ends of the electrodes can be greatly increased, unit energy consumption of products can be reduced, and the yield of the products can be increased.

Description

technical field

[0001] The invention relates to a method for controlling the furnace condition of a submerged arc furnace and the submerged arc furnace, in particular to a method for controlling the condition of a three-phase AC submerged arc furnace and a three-phase AC submerged arc furnace. Background technique

[0002] Three-phase AC submerged arc furnace is a kind of submerged arc furnace. The smelted products include silicon-based, chromium-based, manganese-based and other ferroalloys, calcium carbide, yellow phosphorus, etc. When working, the electrodes are inserted into the furnace charge in the furnace to implement submerged arc Operation, the electric energy is input into the furnace through the electrode, and the arc generated between the end of the electrode and the charge and the resistance heat of the charge are used as the heat source for heating, so it is also called resistance electric arc furnace. After the charge is melted, it is divided into three layers ...

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