Stewart W. Robinson - Lagrange KY, US Greg Brasel - Louisville KY, US
Assignee:
Carbide Industries, LLC - Louisville KY
International Classification:
C21B 13/00 C22B 7/04
US Classification:
75584, 75 1046, 65 20
Abstract:
A process for tapping a steel furnace with a reduced amount of entrained slag is disclosed. During tapping, particles of a slag foaming agent are added. The foaming agent may include calcium carbide and/or other chemicals. The agent foams the slag to decrease its density during tapping and/or to disrupt initial vortex formation at the tap.
Agents For The Removal Of Impurities From A Molten Metal And A Process For Producing Same
Stewart W. Robinson - La Grange KY Roger W. Bartram - Basking Ridge NJ John A. Dehuff - Madison NJ
Assignee:
The BOC Group, Inc. - Montvale NJ
International Classification:
C21C 700
US Classification:
75 53
Abstract:
There is disclosed an agent and a method for producing the same for removing impurities from a molten metal comprising a first compound capable of reacting with and removing the impurities contained in the molten metal and a second compound coated on the first compound to form a composite. The second compound has a contact angle with the molten metal less than that of the first compound, thereby causing the composite to be more wettable in the molten metal as compared to the first compound. This allows the composite to penetrate into the molten metal, resulting in the first compound efficiently reacting with the impurity contained within the molten metal.