Klockner-werke Ag

Rheinstahl Huettenwerke Ag

Horst Abratis

Hans Jurgen Langhammer

Hermann Maas

Klaus Schafer

Claus Raeune

Klaus-Jurgen Rendel

Horst Lotze

A suspension of a particulate material in a carrier medium is introduced into a molten bath through a lance which has an inlet port, an outlet port and a passage communicating the inlet port with the outlet port. The flow-through cross-sectional area of the outlet port is smaller than the flow-through cross-sectional area of the passage so that the speed of flow of the suspension through the outlet port is higher than the speed of flow of the suspension through the passage and penetration of the molten bath into the outlet port is thereby prevented. The supension is introduced into the inlet port through a conduit having a smaller flow-through cross-sectional area than the passage so that the pulsations of the solution which occur in the conduit are damped in the passage. A duct may introduce pressurized medium into the region of the outlet port to thereby loosen the particulate material accumulated in the region of the outlet port. The lance may include a metallic tube and a lyer of refractory material surrounding the same, and a ceramic tubular element may form a continuation of the metallic tube downstream of the outlet port and having the same flow-through cross-sectional area as the latter.

Arrangement for and a method of introducing particulate material into

An apparatus for treating metal melts during continuous casting, wherein the teeming metal is enclosed to a point below the surface of the metal pool in the continuous casting mold to avoid contact with the ambient atmosphere and the surface of the pool is covered with a layer of slag. Small volumes of purging gas are introduced in bubble form into the metal melt at the location where such metal melt begins to form a teeming jet.

Apparatus for treating metal melts with a purging gas during continuous

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Hagen, Germany

Horst Abratis