Improvements in 1995 for the treatment of the steel ladle

摘要

1496474 Treating steel CENTRE DE RECHERCHES METALLURGIQUES-CENTRUM VOOR RESEARCH IN DE METALLURGIE 27 April 1976 [29 April 1975] 17088/76 Heading C7D In the treatment of molten steel in a ladle, briquettes of addition or treating agents are added, the briquettes consisting of several different layers, one inside the other, each of which reacts with the steel in turn in accordance with a desired sequence. The external layer comprises one or more deoxidizing substances such as ferro manganese, ferro aluminum and/or ferro silicon, the second comprises one or more nitrogen fixing substances, and a third layer or core comprises a desulphurizing substance and/or ferro boron. The briquette may be bonded with a tar binder.