Industrial Application of Chemical Energy for Special Steel Grades and Processes

by Dr. Alexander Grosse, Dr. Andreas Opfermann, Klaus Libera, Dr. Robert Eriksson, Carsten Pfundstein

Publisher - Badische Stahl-Engineering GmbH, Badische Stahlwerke GmbH, Ovako Hofors AB

Category - General Novel

Oxy-fuel burners are nowadays almost standard equipment on Electric Arc Furnaces all over the world. The implementation of those burners began more than 30 years ago. The main reason for oxy-fuel burner installations is supporting scrap melting at the cold spots common to UHP operation. Today most burners are operated as multi-function tools, i.e. they operate as burners as well as oxygen lancing tools. The application of those multi-function tools is mainly in carbon steel production as it enables the utilisation of high oxygen levels together with carbon injection. This has lead to a boost in productivity together with a reduction in electrical energy. However, the application of multi-function side wall tools has not yet been introduced much on EAF’s which produce special steel grades or stainless steels. This paper describes operational results together with fundamentals for the application of chemical energy at a stainless steel producer and a special steel producer. In addition an example will be given from a shaft furnace. An optimised chemical energy usage has shown an improved productivity together with lower consumption figures.

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