Specialized metallurgical processes – compositions for use therei – Processes – Producing or treating free metal
Patent
1991-10-28
1992-10-06
Rosenberg, Peter D.
Specialized metallurgical processes, compositions for use therei
Processes
Producing or treating free metal
75959, C22B 900
Patent
active
051528304
ABSTRACT:
A thermite process for producing a pure metal or alloy by charging a reactor furnace with a mixture primarily containing a powdered metallic oxide and a reducing agent such as powdered aluminum, wherein a batch of the mixture of the starting materials is divided into a plurality of loading lots. The amount of heat generated by each of the loading lots of the starting materials is so regulated that the amount of heat generated by each loading lot differs from the amount of heat generated by other loading lots and the loading lots are sequentially arranged. The lots are loaded into a furnace to form layers for thermite reaction in an ascending order of heat generation.
REFERENCES:
patent: 2253364 (1941-08-01), Cohen
patent: 2778723 (1957-01-01), Ujike
patent: 2836488 (1958-05-01), Martin
patent: 3736127 (1973-05-01), Kocks
Fujinuma Tatsuhiko
Kobayashi Ken-ichi
Japan Metals & Chemical Co., Ltd.
Rosenberg Peter D.
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