Method for converter blow control

Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes

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C21C 532

Patent

active

044166915

ABSTRACT:
A method for converter blow end-point control which comprises carrying out waste gas analyses on a continuous or intermittent basis in a final stage of the blow and, based on decarburization rate data (waste gas information) obtained from said waste gas analysis, determining the end-point of the blow where the carbon content of the bath equals a target carbon content. The method is characterized by the use of the decarburization rate equation: ##EQU1## which is a differential equation taking account of the delay time (.tau.) of said waste gas information which is a period of time from the time-point of occurrence of a decarburization reaction in the converter till the time when it is detected as said decarburization rate data, and an equation:

REFERENCES:
patent: 3561743 (1971-02-01), Schroeder
patent: 3607230 (1971-09-01), Wintrell
patent: 3669645 (1972-06-01), Oishi

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