A maintenance method for an all-electric melting furnace

Abstract

The invention discloses a maintaining method for an all-electric melting kiln. The maintaining method for the all-electric melting kiln comprises a hot maintaining method and a cold maintaining method. The hot maintaining method comprises the steps that (1), a main electrode load of the all-electric melting kiln is stopped, a starting electrode and a liquid flowing hole are adjusted to be in a heat preservation state, and when the temperature of the upper bath wall is lowered to 95-105 DEG C, a damaged bath wall brick or transition brick is locally repaired; (2), the length of a molybdenum electrode in the all-electric melting kiln is observed and measured, and the molybdenum electrode is replaced or continues to be kept according to the damage degree of the molybdenum electrode so as to be in the optimal working state; and (3), the main electrode load is adjusted to a high-voltage gear till the temperature in a bath rises to 850-900 DEG C, and a main melting electrode is added for further energized heating till the daily production working condition requirements are met. According to the maintaining method for the all-electric melting kiln, it can be guaranteed that the all-electric melting kiln can recover such as new without needing to be completely pushed down when the life of the all-electric melting kiln is end, corrosion of molten glass on corundum bricks is relatively and greatly reduced, the service life of the kiln is prolonged, the production cost is effectively reduced, safety and environmental friendliness are achieved, and energy conservation and consumption reduction are achieved.

Description

technical field [0001] The invention relates to the technical field of mineral melting equipment, in particular to a maintenance method for an all-electric melting furnace. Background technique [0002] The all-electric melting furnace is a kind of glass electric melting furnace. When people find that high-temperature glass can conduct electricity, the electric energy can be used as a heat source to melt the glass, that is, the electric melting furnace is used to melt the glass. The all-electric furnace means that all normal working furnace fuels rely on electricity. The main principle of the all-electric melting furnace is to use electric energy as the heat source. Generally, the horizontal insertion on the side wall of the kiln is called the flat insertion type, the transition brick oblique insertion and the bottom straight insertion are called the oblique insertion type, and the top insertion is called the top insertion type. Indirect resistive radiant heating. The pool...

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Problems solved by technology

[0003] However, the pool wall bricks of domestic traditional all-electric melting furnaces will be eroded due to long-term contact with high-temperature glass liquid in about three years, which will deteriorate the material quality and increase energy consumption, which means that the life of the glass furnace will expire. The traditional solution is often to stop the furnace, cut off the power, cool down and unload the material, dismantle the kiln and rebuild it, and replace it with new corundum bricks, electrode structures and other insulation materials.

After the kiln is dismantled, the relatively good pool wall bricks, pool bottom bricks, and Xuan bricks in the kiln will be scrapped, which greatly increases the production cost and the repair cycle is relatively long

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