SLAG COMPONENT ANALYSIS METHOD, SLAG BASICITY ANALYSIS METHOD, AND MOLTEN IRON REFINING METHOD

SLAG COMPONENT ANALYSIS METHOD, SLAG BASICITY ANALYSIS METHOD, AND MOLTEN IRON REFINING METHOD

Provided is a slag component analysis method capable of quickly and accurately measuring slag components generated during refining of molten iron. The method comprises: irradiating a surface of slag to be analyzed with a pulse laser a plurality of times to turn part of the slag into plasma; dispersi...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SUGAWARA Seiya, INOSE Masao
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CHEMISTRY
COLORIMETRY
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
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
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Beschreibung
Zusammenfassung:Provided is a slag component analysis method capable of quickly and accurately measuring slag components generated during refining of molten iron. The method comprises: irradiating a surface of slag to be analyzed with a pulse laser a plurality of times to turn part of the slag into plasma; dispersing excitation light obtained from the slag turned into plasma and acquiring an emission spectrum of an element contained in the slag per one pulse laser irradiation or per a plurality of pulse laser irradiations; and deriving a target component concentration or component amount ratio from the acquired emission spectrum, wherein the slag to be analyzed is slag generated in a converter-type refining furnace, and in the process of turning part of the slag into plasma, the pulse laser is applied from a side of the converter-type refining furnace tilted to remove the slag generated in the converter-type refining furnace.