High-temperature alloy vacuum induction melting deep desulfurization technology

The invention discloses a high-temperature alloy vacuum induction melting deep desulfurization technology. Desulfurization pretreatment is conducted, after charging and melting down, long-time high-temperature refining is conducted, and O and N removal is achieved through the good carbon-oxygen reac...

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Hauptverfasser:	SHEN XINMO, CHEN HAI, CHEN MENGXIAO
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS METALLURGY METALLURGY OF IRON PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	The invention discloses a high-temperature alloy vacuum induction melting deep desulfurization technology. Desulfurization pretreatment is conducted, after charging and melting down, long-time high-temperature refining is conducted, and O and N removal is achieved through the good carbon-oxygen reaction; after refining is finished, alloying elements are added; composite desulfurization is conducted, CaO-Al2O3-CaF2 series pre-melted slag is added on the surface of a melting pond obtained after desulfurization pretreatment for rapid slagging; after added pre-melted slag is basically melted down,a NiCa alloy desulfurizing agent is added for deposition desulfurization, and the Ca mixing amount is 0.01 wt%-0.03 wt%. The manner that the CaO-Al2O3-CaF2 series pre-melted slag is utilized for rapid slagging after alloying, and the NiCa alloy is added for composite desulfurization is mainly provided for achieving the purpose of high-temperature alloy vacuum induction deep desulfurization; and through the means, when no