Arbed S.a.

Francois Knaff

Romain Henrion

Andre Bock

Henri Klein

Carlo Heintz

Robert Mousel

Carlo Lux

Michel Decker

Patrick Derungs

Henri Hoerold

A gas injection lance for use in metal refining is disclosed. The lance includes a tube having an inner diameter profile and a throttle member slidably received with the tube. The tube and throttle member define an annular gas flowpath. The throttle body may be moved axially within the tube to modify the characteristics of the flowpath.

Oxygen injection lance

Nozzles for a refining lance are presented which are spaced upwardly from the head of the lance and supply post-combustion oxygen to the space above a molten metal bath undergoing refining. Each of the nozzles has a mouthpiece with two parallel sharp edges which are arranged in planes passing substantially through the axis of the lance and which are connected by slightly rounded edges. Above the mouthpiece of each nozzle is a converging part.

Nozzle for refining lance

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Niederkorn, Luxembourg

Francois Knaff