TEMPERATURE MEASURING METHOD OF MOLTEN STEEL IN CONVERTOR
PROBLEM TO BE SOLVED: To provide a temperature measuring method of molten steel in a converter capable of measuring accurately and continuously a molten steel temperature by securing a visual field for measuring the molten steel temperature in the converter, and attaining a long lifetime of a tuyere...
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| creator | YUKI TOSHITAKA ISHIKAWA ATSUHIRO SUGIURA MASAHITO |
| description | PROBLEM TO BE SOLVED: To provide a temperature measuring method of molten steel in a converter capable of measuring accurately and continuously a molten steel temperature by securing a visual field for measuring the molten steel temperature in the converter, and attaining a long lifetime of a tuyere by suppressing a tuyere fusion loss. SOLUTION: In this temperature measuring method of the molten steel in the converter, mixed gas including O2gas is blown from an inner pipe 10 and cooling gas including CO2gas is blown from the interval between the inner pipe 10 and an outer pipe 11, into the converter 14 wherein the tuyere 12 equipped with the inner pipe 10 and the outer pipe 11 arranged at an interval on the periphery of its outside is provided on a bottom part 13, and simultaneously the molten steel 15 temperature in the converter 14 can be measured continuously by a brightness measuring means 16 through the tuyere 12. The O2gas content in the mixed has flowing in the inner pipe 10 is controlled to be ≥17% and |
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SOLUTION: In this temperature measuring method of the molten steel in the converter, mixed gas including O2gas is blown from an inner pipe 10 and cooling gas including CO2gas is blown from the interval between the inner pipe 10 and an outer pipe 11, into the converter 14 wherein the tuyere 12 equipped with the inner pipe 10 and the outer pipe 11 arranged at an interval on the periphery of its outside is provided on a bottom part 13, and simultaneously the molten steel 15 temperature in the converter 14 can be measured continuously by a brightness measuring means 16 through the tuyere 12. The O2gas content in the mixed has flowing in the inner pipe 10 is controlled to be ≥17% and <30%, and the CO2gas content flowing in the interval between the outer pipe 11 and the inner pipe 10 is controlled to be ≥10% and <45% of the O2gas content flowing in the inner pipe 10. 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SOLUTION: In this temperature measuring method of the molten steel in the converter, mixed gas including O2gas is blown from an inner pipe 10 and cooling gas including CO2gas is blown from the interval between the inner pipe 10 and an outer pipe 11, into the converter 14 wherein the tuyere 12 equipped with the inner pipe 10 and the outer pipe 11 arranged at an interval on the periphery of its outside is provided on a bottom part 13, and simultaneously the molten steel 15 temperature in the converter 14 can be measured continuously by a brightness measuring means 16 through the tuyere 12. The O2gas content in the mixed has flowing in the inner pipe 10 is controlled to be ≥17% and <30%, and the CO2gas content flowing in the interval between the outer pipe 11 and the inner pipe 10 is controlled to be ≥10% and <45% of the O2gas content flowing in the inner pipe 10. 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SOLUTION: In this temperature measuring method of the molten steel in the converter, mixed gas including O2gas is blown from an inner pipe 10 and cooling gas including CO2gas is blown from the interval between the inner pipe 10 and an outer pipe 11, into the converter 14 wherein the tuyere 12 equipped with the inner pipe 10 and the outer pipe 11 arranged at an interval on the periphery of its outside is provided on a bottom part 13, and simultaneously the molten steel 15 temperature in the converter 14 can be measured continuously by a brightness measuring means 16 through the tuyere 12. The O2gas content in the mixed has flowing in the inner pipe 10 is controlled to be ≥17% and <30%, and the CO2gas content flowing in the interval between the outer pipe 11 and the inner pipe 10 is controlled to be ≥10% and <45% of the O2gas content flowing in the inner pipe 10. COPYRIGHT: (C)2008,JPO&INPIT</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMISTRY COLORIMETRY MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT MEASURING METALLURGY METALLURGY OF IRON PHYSICS PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL RADIATION PYROMETRY TESTING TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS |
| title | TEMPERATURE MEASURING METHOD OF MOLTEN STEEL IN CONVERTOR |
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