Arcelormittal Investigacion Y Desarrollo, S.l.

Arcelormittal

Bernard Chukwulebe

Yong M Lee

Jim Norris

Jamey Costino

Michael A Masleid

Bruce Ross Forman

Jamey M Costino

Jim D Norris

A method for maintaining the optimal argon injection flow rate which will result in production of steel slab of a chosen alloy having optimal cleanliness. The steel is cast using an argon injected slide gate. The selected steel has a known optimal argon injection flow rate Qb* for casting steel of optimal cleanliness. The method involves calculating the present steel pressure and determining the present injection flow rate conductance Gb' of the argon injected slide gate during either of 1) a steel pressure change event; or 2) an argon flow change event. The measurements are used to calculate present argon pressure required to insure the required injection flow rate of argon into the steel for optimal cleanliness of the cast steel.

Method for maintaining the optimal amount of inert gas being injected into cast steel

Presented are an insulation brick and the method of using an insulation brick to create a thermal lining. A set of corrugations are formed into a sidewall of the brick to increase the thermal insulation. A first end of the insulation brick has a convex portion while the second end of the insulation brick has a convex portion. This allows a first insulation brick to mate with another brick in an end to end configuration.

Insulation brick

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Lansing, IL, United States of America

Bernard Chukwulebe