V removal method for stainless steel external refining

The invention discloses a V removal method for stainless steel external refining, which comprises the following steps: a, melting molten steel from a primary smelting furnace, adding the molten steel into an external refining furnace at the temperature of 1480-1580 DEG C to obtain a product A, b, ca...

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Hauptverfasser:	TAO JIEHUA, CHEN YOU, GAO JUNHUA, ZHANG JIANFENG, YU SUHUI, SHEN JUNLIANG, SHI YONG
Format:	Patent
Sprache:	chi ; 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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Beschreibung
Zusammenfassung:	The invention discloses a V removal method for stainless steel external refining, which comprises the following steps: a, melting molten steel from a primary smelting furnace, adding the molten steel into an external refining furnace at the temperature of 1480-1580 DEG C to obtain a product A, b, calculating the oxygen blowing amount according to the content of Si and Mn elements in the product A and the oxygen blowing efficiency, blowing oxygen into the external refining furnace in a total oxygen flow manner to obtain a product B, and c, adding the product B into the primary smelting furnace at the temperature of 1480-1580 DEG C to obtain a product C; d, adding lime and fluorite into the product C to obtain a product D, e, calculating the oxygen blowing amount required by V removal according to the content of the V element in the product D and the V removal efficiency, blowing oxygen into an external refining furnace in a total oxygen flow manner to obtain a product E, adding an easily-slagging material into