Environmental problems and utilizing technogenic raw materials in metallurgical production

The environmental problems and utilization of technogenic raw materials in metallurgical production are discussed. Development of the SATOP technology reduces pollution from pellet production by a factor of 2.0-2.2, reduces atmospheric emissions by a factor of 2.5-3.0, and decreases the amount of heat lost by a factor of 1.2-1.5. There is also substantial interest in a technology that has been developed to recycle sintering-machine gases and use of them in the blast in blast furnaces. Furthermore, the presence of a large amount of metallic iron in MOS-1 and an increase in its unit consumption to 40-50 kg/ton sinter are reducing the consumption of natural raw materials by a factor of 1.3-1.5 without lowering the sinter's iron content.