Desulfurizer for molten iron

The present invention relates to a desulfurizer for molten iron, wherein a mixing material of the desulfurizer is manufactured by mixing quicklime, Al by-products generated during an Al dissolving process, and ladle slag. The desulfurizer for molten iron comprises: 80-85 wt% of the quicklime; 5-17 w...

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Bibliographic Details
Main Authors CHOI, JEA BOK, KEUM, CHANG HUN, BANG, KANG HO, KWAK, SANG JIN, JUNG, TAE JEONG
Format Patent
LanguageEnglish
Korean
Published 21.09.2017
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
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Summary:The present invention relates to a desulfurizer for molten iron, wherein a mixing material of the desulfurizer is manufactured by mixing quicklime, Al by-products generated during an Al dissolving process, and ladle slag. The desulfurizer for molten iron comprises: 80-85 wt% of the quicklime; 5-17 wt% of the Al by-products; 3-15 wt% of the ladle slag; and inevitable impurities. Therefore, desulfurizing efficiency of molten iron can be improved without fluorite which is an environmental pollution material. Moreover, as a material generated in a steel mill process is recycled for the Al by-products and the ladle slag, costs consumed for manufacturing the desulfurizer can be reduced. 본 발명은 용선 탈황제에 관한 것으로, 탈황제 배합원료는 생석회와, Al 용해공정 중 발생하는 Al 부산물 및 레이들 슬래그가 배합되어 제조되며, 상기 생석회를 80 내지 85 중량%, 상기 Al 부산물을 5 내지 17 중량%, 상기 레이들 슬래그를 3 내지 15 중량% 및 기타 불가피하게 섞인 불순물을 함유함으로써, 환경 오염 물질인 형석을 사용하지 않고 용선의 탈황효율을 증가시킬 수 있다. 또한, Al 부산물 및 레이들 슬래그는 제철소 공정에서 발생하는 물질을 재활용하는 것이므로, 탈황제를 제조하기 위해 소모되는 비용을 절감할 수 있다.
Bibliography:Application Number: KR20160029727