Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Reexamination Certificate
2005-02-15
2005-02-15
Andrews, Melvyn (Department: 1742)
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
Reexamination Certificate
active
06855183
ABSTRACT:
The invention is a method for producing stainless steel using a generator, heating the vessel that is part of the generator, loading waste comprising steel into the heated vessel, melting the loaded waste to a molten state using a non-transferred torch to cut and melt the waste and then using a transferred torch to maintain a molten metal pool, adding additional steel to raise the molten metal pool to a minimum depth, raising the temperature to 2000 degrees Centigrade, acquiring EPA approval, loading waste into the vessel at a defined rate, maintaining the molten metal pool further melting any non-melted waste into a molten status with the transferred torch, determining BTU content and gas flow, injecting steam into the vessel, flowing gas from the vessel through scrubbers into storage containers and removing the stainless steel from the molten metal pool.
REFERENCES:
patent: 4864096 (1989-09-01), Wolf et al.
patent: 5877394 (1999-03-01), Kujawa et al.
“Evaluation of Plasma Arc Technology for the Treatment of Municipal Solid Wastes In Georgia,” Jan. 1997. Georgia Institute of Technology Atlanta Georgia 30332-0159.
Andrews Melvyn
King & Spalding LLP
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