METHOD FOR PRE-TREATING MOLTEN IRON

METHOD FOR PRE-TREATING MOLTEN IRON

PROBLEM TO BE SOLVED: To efficiently utilize metal recovered from slag developed in a dephosphorizing treatment and a desiliconizing treatment of molten iron as the iron source without developing the danger of steam explosion and non-melting metal in the dephosphorizing treatment and the desiliconiz...

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Hauptverfasser: TAKI CHIHIRO, OKUDA HARUYUKI, SUDA MAMORU
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
METALLURGY
METALLURGY OF IRON
PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL
TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
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creator TAKI CHIHIRO
OKUDA HARUYUKI
SUDA MAMORU
description PROBLEM TO BE SOLVED: To efficiently utilize metal recovered from slag developed in a dephosphorizing treatment and a desiliconizing treatment of molten iron as the iron source without developing the danger of steam explosion and non-melting metal in the dephosphorizing treatment and the desiliconizing treatment processes of the molten iron. SOLUTION: In the method for pre-treating the molten iron, applying the dephosphorizing treatment or the desiliconizing treatment by supplying oxygen source into the molten iron, the metal 16 recovered from the slag developed in the dephosphorizing treatment or the desiliconizing treatment of the molten iron, is added toward the molten iron from the upper part of the molten iron before starting this treatment or during treating term. In this way, this metal can efficiently be utilized as the iron source without developing the danger of the steam explosion and the non-melting metal. COPYRIGHT: (C)2007,JPO&INPIT
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SOLUTION: In the method for pre-treating the molten iron, applying the dephosphorizing treatment or the desiliconizing treatment by supplying oxygen source into the molten iron, the metal 16 recovered from the slag developed in the dephosphorizing treatment or the desiliconizing treatment of the molten iron, is added toward the molten iron from the upper part of the molten iron before starting this treatment or during treating term. In this way, this metal can efficiently be utilized as the iron source without developing the danger of the steam explosion and the non-melting metal. 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SOLUTION: In the method for pre-treating the molten iron, applying the dephosphorizing treatment or the desiliconizing treatment by supplying oxygen source into the molten iron, the metal 16 recovered from the slag developed in the dephosphorizing treatment or the desiliconizing treatment of the molten iron, is added toward the molten iron from the upper part of the molten iron before starting this treatment or during treating term. In this way, this metal can efficiently be utilized as the iron source without developing the danger of the steam explosion and the non-melting metal. 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subjects CHEMISTRY
METALLURGY
METALLURGY OF IRON
PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL
TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
title METHOD FOR PRE-TREATING MOLTEN IRON
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