NOZZLE FOR BLOWING PULVERIZED COAL INTO FURNACE IN IRON-MAKING APPARATUS AND MANUFACTURE THEREOF

PURPOSE:To improve the heat resistance, oxidation resistance, etc., of a nozzle for blowing pulverized coal into a furnace in an iron-making apparatus and to improve the heat loss by making cooling with compressed air unnecessary. CONSTITUTION:In the nozzle for blowing the pulverized coal for supply...

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Bibliographic Details
Main Authors KUME SHOICHI, UENO GUNJI, AMANO HIROSHI, AIDA SUSUMU, MIZOGUCHI KENJI
Format Patent
LanguageEnglish
Published 26.07.1994
Edition5
Subjects
CHEMISTRY
MANUFACTURE OF IRON OR STEEL
METALLURGY
METALLURGY OF IRON
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Summary:PURPOSE:To improve the heat resistance, oxidation resistance, etc., of a nozzle for blowing pulverized coal into a furnace in an iron-making apparatus and to improve the heat loss by making cooling with compressed air unnecessary. CONSTITUTION:In the nozzle for blowing the pulverized coal for supplying the pulverized coal into high temp. blasting arranged in a high temp. blasting introducing tube 100 generating combustion flame in the furnace in the iron- making apparatus, to at least the tip part 10 of the cylindrical nozzle 1, thermal- spraying is executed to form the thermal-sprayed film 2 for heat insulating. By this method, even if the nozzle 1 does not supply the compressed air for cooling, the sufficient heat resistance, oxidation resistance and wear resistance are provided.
Bibliography:Application Number: JP19930018155