METHOD OF PRODUCTION OF THE STEEL IN THE ARC FURNACES Russian patent published in 2007 - IPC C21C5/52 

FIELD: ferrous metallurgy; methods of production of the steel in the arc furnaces.

SUBSTANCE: the invention is pertaining to the field of the ferrous metallurgy. The method of production of the steel in the arc furnace provides for loading of the metallic charge and the scrap, feeding of the carbon-containing and slag-forming materials, melting of the charge and the scrap, realization of the oxidative refining, heating and tapping of the melt from the furnace. For intensification of the process of the scrap melting conduct the delayed relocation of the electrodes to the level of the liquid melt till consumption of the electrical power of 120-140 kWh/t and the energy of the fuel-oxygen burners equivalent to 35-40 kWh/t, carry out addition of the scrap, and to each liquid melt before such a scrap addition feed the carbon-containing substance with the carbon share of no less than 70%, at the rate of 22-25 kg per a ton of each portion of the scrap, and up to termination of the phase of the melting simultaneously with the melting of the scrap up to consumption of 310-325 kWh/t of the electrical power at the rate of 45-65 kg/minute exercise the oxidization of carbon present in the liquid melt. Utilization of the invention ensures the decreased duration of the melting operation, the reduced power input.

EFFECT: the invention ensures the decreased duration of the melting operation, the reduced power input.

4 cl, 1 ex, 3 tbl, 1 dwg