Fuel Arc Furnace—FAF

Abstract

Selection of the Quantum constructive scheme as a basis for a fuel arc furnace—FAF is justified. Main calculated parameters and performances of the FAF of 100 tons tapping weight equipped with the proposed systems for high-temperature scrap preheating and oxygen bath blowing at the slag-metal interface are given. The methods described earlier are used for the calculations. The heating time of scrap in the shaft to an average mass temperature of 800 ℃ and conditions required for such heating are defined. The powers of the transformer and burner devices, electric energy consumption and natural gas flow rate have been determined as well. The hourly productivity of the FAF increases by a factor of 1.4 and electrical energy consumption reduces by about 2 times in comparison with the EAF with the same tapping weight. This effect is reached with the 30% reduced power of the transformer and the increased natural gas flow rate by 5.5 m³/t. These and other advantages of the FAF make it possible to expect that in the near future the fuel arc furnaces will be able not only to compete successfully with the modern EAFs but also replace them everywhere.