Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1975-01-10
1976-05-11
Satterfield, Walter R.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 51, 23230PC, C21C 700
Patent
active
039559688
ABSTRACT:
In a top blown oxygen converter, temperature of the molten metal is determined by measuring the total heat of the charge. The oxygen supplied through the lance is measured and the amount of carbon monoxide and carbon dioxide leaving the converter are continuously determined. After the conversion process has progressed and after the metalloids have been oxidized, the total amount of lance oxygen and the total amount of carbon monoxide and carbon dioxide leaving the converter are determined. The increase in temperature of the molten metal bath due to the exothermic reaction is determined by the total amounts of carbon dioxide and carbon monoxide leaving the converter. The increase in temperature of the metal bath due to the exothermic reaction is determined by subtracting from the total amount of oxygen supplied, the amount of unreacted oxygen and the amount of oxygen consumed in forming carbon monoxide, carbon dioxide and oxidized iron. The oxygen remaining by difference is consumed in the conversion of the metalloids to their oxides and the increase in temperature is determined by multiplying the volume of oxygen used to oxidize the metalloids by the average heat of formation per unit volume of oxygen.
Subsequent increases in the temperature are determined by measuring the oxygen supplied, carbon monoxide and carbon dioxide leaving the vessel. Oxygen to oxidize carbon and oxidized iron is subtracted from the amount of oxygen supplied and the remaining oxygen, less oxygen dissolved in the bath, is considered to have reacted with the iron.
REFERENCES:
patent: 3463631 (1969-08-01), Vayssiere et al.
patent: 3475599 (1969-10-01), Schwartzenberg et al.
patent: 3489518 (1970-01-01), Revell et al.
patent: 3500029 (1970-03-01), Schwartzenberg et al.
Daniels, F.; Outlines of Physical Chemistry; New York, 1948 pp. 124-129.
Hougen, O.; Chemical Process Principles (I): Material and Energy Balances; New York, 1947, pp. 302-311, (TP155 H65).
Barber Sherman H.
Koppers Company Inc.
Price, Jr,. Stanley J.
Satterfield Walter R.
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