Metallurgical apparatus – With programmed – cyclic – or time responsive control means
Patent
1983-06-09
1984-10-02
Rosenberg, Peter D.
Metallurgical apparatus
With programmed, cyclic, or time responsive control means
75 60, C21C 532
Patent
active
044743610
ABSTRACT:
An oxygen blow steelmaking furnace comprises a device for supplying materials for blowing into the furnace, a plurality of sensing devices, and a computer control device. The supplying device supplies into the furnace oxygen and fluxes from above and, as occasion demands, at least one of oxygen, carbon dioxide and inert gas from below. The sensing devices individually respond to different properties that represent the blowing condition. The computer control device sets a program for the blow based on the charging and blowing-out conditions, responds to the sensing devices, and outputs the operating instructions to the supplying device. The computer control device includes a device that determines the oxygen content is slag based on the aforementioned properties and the amount of operational correction according to the deviation between the computed and targeted oxygen contents, and a device that estimates, immediately before the completion of the blow, the temperature and carbon content of the hot metal at the end point based on the aforesaid properties and oxygen content in slag and determines the amount of operational correction according to the difference between the estimated and targeted hot-metal temperatures and carbon contents.
REFERENCES:
patent: 3377158 (1968-04-01), Meyer
patent: 3551140 (1970-12-01), Nilles
patent: 3574598 (1971-04-01), Kern
Isogami Katsuyuki
Kanemoto Michitaka
Ueda Yuziro
Yoshida Toru
Nippon Steel Corporation
Rosenberg Peter D.
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