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1. (AU1996069683) Method and apparatus to determine and control the carbon content of steel in a BOF vessel

Office : Australia
Application Number: 69683/96 Application Date: 06.09.1996
Publication Number: 1996069683 Publication Date: 17.07.1997
Publication Kind : A
Prior PCT appl.: Application Number:US1996014334 ; Publication Number: Click to see the data
IPC:
C21C 5/30
C21C 5/46
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
C
PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
5
Manufacture of carbon steel, e.g. plain mild steel, medium carbon steel, or cast-steel
28
Manufacture of steel in the converter
30
Regulating or controlling the blowing
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
C
PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
5
Manufacture of carbon steel, e.g. plain mild steel, medium carbon steel, or cast-steel
28
Manufacture of steel in the converter
42
Constructional features of converters
46
Details or accessories
CPC:
C21C 5/4673
C21C 5/30
Y02P 10/122
Applicants: Bethlehem Steel Corporation
Inventors:
Agents: Shelston IP Pty Ltd.
Priority Data: 08/550590 31.10.1995 US
Title: (EN) Method and apparatus to determine and control the carbon content of steel in a BOF vessel
Abstract: front page image
(EN) Apparatus for determining in-blow % carbon content and/or the First Turn Down Carbon of a BOF heat includes a light sensor housed within a temperature regulated case having a sighting window including air wipe means to shield the light sensor from steelmaking dust and fume. The apparatus also includes a means to generate a signal that corresponds to the amount of oxygen blown into the BOF during a heat, and a programmable logic controller. The logic controller is programmed to continuously process oxygen blown signals from the signal generating means, and light intensity signals received from the light sensor. The program calculates continuous in-blow % carbon content of the heat based upon the difference in light intensity from a point of maximum light intensity emitted from the BOF vessel in relation to the amount of oxygen blown into the BOF vessel durng the same period of time.
Also published as:
MXPA/a/1998/002959EP0859866EP1046720CN1196757CA2235499KR1019990063751
WO/1997/016571