Method of introducing additives in steelmaking

Details Method of introducing additives in steelmaking Method of introducing additives in steelmaking

C - Chemistry, Metallurgy

21

C

C21C 7/00 (2006.01) C21C 1/02 (2006.01) F27D 3/00 (2006.01) F27D 3/18 (2006.01)

Patent

CA 2385386

The additives, in particulate solid form, are conveyed pneumatically in a divergent stream from a pneumatic gun to impinge upon the molten iron and mix therewith. The gun is spaced above a surface of molten iron such that the pneumatically conveyed stream including the additive has a central axis which is either horizontal (or at an acute angle to the horizontal). The gun is preferably adjustable for adjustment of the stream angle, and the stream may be either added to pouring metal or to cover a surface of the molten iron.

L'invention concerne des additifs sous forme de particules solides, acheminés par transport pneumatique dans un flux divergent depuis un pistolet pneumatique de manière à empiéter sur le fer fondu et le mélange. Le pistolet est espacé au-dessus d'une surface de fer fondu de telle sorte que le flux divergent acheminé par transport pneumatique comprenant l'additif présente un axe central qui est horizontal ou qui présente un angle proche de l'horizontal. De préférence, le pistolet est réglable afin d'ajuster l'angle du flux. Le flux peut être ajouté pour couler le métal ou pour recouvrir une surface du fer fondu.

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