Industrial smelting furnace strengthen technology

Industrial furnace is an integral part of the production of special steel smelting equipment. More intense competition in the industry, about 45 minutes or so the conventional converter steel, the use of industrial furnace about 70 minutes, therefore, how to further reduce the electric arc furnace smelting time, reduce consumption, and thus significantly reduce costs, a number of special steel enterprises development of the internal needs. Commonly used to strengthen the industrial furnace smelting technology is:
Industrial furnace against the hot metal technology:
Hot molten iron with a certain amount of physical heat, and contain elements of high carbon, silicon, manganese and high calorific value, Oxygen oxidation can release large amounts of chemical heat to scrap quickly become red hot, very easy to use oxygen cutting, and therefore can make use of against the hot metal, shorten the refining time and improve the efficiency of smelting.
Add Method: industrial furnace against the hot metal roof by first raising the first material is about 50% of the total material weight, and powered Chuanjing to about 8 minutes, power outages and unscrew the lid, lifting equipment that contains molten iron ladle being lifted to the top of the roof, aligned electrode Chuanjing hole parts molten iron poured from the roof furnace for about 3 minutes, then cover the lid is powered smelting.
RCB gun injection technology:
RCB gun has a strong ability to decarbonization, hot metal charging technology guarantee. The RCB gun is usually installed in the electric arc furnace furnace wall. Gun lance oxygen jet at supersonic speeds and keep the long form of cluster injected into the bath, with a strong ability to penetrate intense metallurgical reactions occur, decarbonization speed, and stir the bath, conducive to the temperature of the molten steel, the chemical composition is uniform. To ensure that the the RCB gun blowing oxygen utilization and oxygen penetration capability and high decarburization rate, it is necessary to ensure sufficient oxygen pressure, the Acute excessive decarburization reaction, destroy interested lining refractories, water-cooled furnace wall . Usually the control pressure 1.2Mpa, the decarburization rate of 0.06-0.08% C / min.
3, efficient foaming slag technology:
Foamy slag process is high impedance UHP best choice, good foamy slag can expand the metallurgical reaction interface, and it helps the migration of the reaction product; while being able to achieve a good submerged arc operation, the arc thermal efficiency greatly improved.
The RCB spray gun into oxygen and molten bath of carbon oxidation reaction occurs to produce a large amount of CO gas in a short period of time up to the formation of foaming slag conditions. As the oxidation of carbon in the molten bath, the bath carbon content decreases, the need for timely toner blown into the furnace, in order to maintain the slag foaming, on the other hand, can also reduce the iron oxide content in the slag, to improve metal the closing rate. As the reaction proceeded, the basicity of the slag is reduced, foamed slag becomes unstable, required in the smelting process should be timely portionwise addition of lime in order to improve the slag basicity.