Recent Developments in the Technology of Steelmaking in Twin Hearth Furnaces

Twin hearth technology has been developed with an objective of substantially improving the productivity of the open hearth furnace shops with reduced fuel and refr-actories consumption. The paper describes the principles of twin hearth process and highlights recent developments for further improving the techno-economics of the process. It also discusses the relevance of the twin hearth tech-nology under Indian conditions. It concludes that twin hearth technology is a viable alternative for modernising open hearth shops which are not too old.