	US 12,378,619 B2
	Process for manufacturing a slag conditioning agent for steel desulfurization
Eric Perrin, Paris (FR); and Souliyann Chunlamani, Brussels (BE)
Assigned to S.A. LHOIST RECHERCHE ET DEVELOPPEMENT, Ottignies-Louvain-la-Neuve (BE)
Filed by S.A. Lhoist Recherche et Developpement, Ottignies-Louvain-la-Neuve (BE)
Filed on Feb. 7, 2024, as Appl. No. 18/435,044.
Application 18/435,044 is a division of application No. 17/309,680, granted, now 11,932,914, previously published as PCT/EP2019/085338, filed on Dec. 17, 2019.
Claims priority of application No. 18213132 (EP), filed on Dec. 17, 2018.
Prior Publication US 2024/0247330 A1, Jul. 25, 2024
Int. Cl. C21C 7/064 (2006.01)

CPC C21C 7/0645 (2013.01)

4 Claims

1. A slag conditioning agent for a process of steel desulfurization, comprising phases of calcium aluminate and an equivalent mass ratio CaO/Al₂O₃comprised between 0.55 and 1.5, said slag conditioning agent having an iron content measured by XRF and expressed in equivalent Fe₂O₃of at least 3 wt %, an aluminum content expressed in equivalent Al₂O₃of at least 30 wt %, and an amount of calcium ferrites measured by XRD of at least 1 wt % relative to the weight of the slag conditioning agent.