Electric furnace to strengthen the smelting technology

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The electric stove is one of the indispensable in the production of special steel smelting equipment. More intense competition in the industry, conventional converter about 45 minutes out of steel, the use of the electric furnace 70 minutes or so, therefore, how to further shorten the electric arc furnace smelting time, reduce consumption, and thus substantially reduce the cost of the development of a number of special steel enterprises the internal need. Commonly used to strengthen the smelting furnace technology is:

1, the electric furnace hot metal technology

The hot molten iron with a certain amount of physical heat, and high calorific value element containing carbon, silicon, manganese, Oxygen oxidation can release large amounts of chemical heat, scrap quickly become red-hot state, very easy to use oxygen cutting, and therefore can make use of hot metal, shorten smelting time, improve the efficiency of smelting.

Add Method: electric furnace with hot metal roof, that is, before adding the first material is about 50% of the total material, then the power Chuanjing about 8 minutes, power outages and unscrew the lid and lifting equipment will be equipped with hot metal molten iron package being lifted to the roof above the alignment the electrode Chuanjing hole parts will be poured into the furnace hot metal from the roof, about 3 minutes, then cover the lid powered smelting.

2, the RCB gun injection

The RCB gun has a strong decarburization capacity, hot metal charging technology ensures. The RCB gun is usually installed in the electric arc furnace the furnace wall. Gun oxygen lance oxygen jet to supersonic cluster form and maintain a longer injected into the molten pool, and has strong penetrating power, tug of metallurgical reactions, decarburization speed, and well stirred bath, conducive to the molten steel temperature, uniform chemical composition. To ensure that the the RCB gun blowing oxygen utilization, oxygen penetration and high decarburization rate, must be t o ensure adequate oxygen pressure, but excessive decarburization reaction is severe, would be lining refractories, water-cooled furnace wall destroying the . The general control of the pressure 1.2Mpa, the decarburization rate of 0.06-0.08% C / min.