Аннотации:
The modern limiting concentrations of harmful substances released in atmosphere are presented for steelmaking. The conditions of heating and gas formation in heating of metal scrap in a shaft arc steel-melting furnace are considered. A method of combined heating of metal scrap is proposed for such furnaces to decrease the pollutant emission into the atmosphere. Apart from the heat of effluent gases from a furnace, this method uses the heat of gas-oxygen burners placed in various shaft heater zones. The advantages of this method of heating of metal scrap are presented. © 2011 Pleiades Publishing, Ltd.