C - Chemistry – Metallurgy – 21 – C
Patent
C - Chemistry, Metallurgy
21
C
53/22
C21C 7/064 (2006.01) C21C 1/02 (2006.01) C21C 5/00 (2006.01) C21C 5/28 (2006.01)
Patent
CA 1214646
ABSTRACT REMOVING PHOSPHORUS FROM IRON To remove phosphorus from iron to a desired level, a charge of the iron is melted in a vessel followed by either (1) supplying gas such as 40% CO2 + 9% CO + 51% H2 to the charge before melting is complete, or (ii) adding, to the charge, iron which is partly or wholly oxidised equivalent to adding iron ore of up to 8% of the charge weight, or a combination of (i) and (ii), such as would at 1600°C supply an oxygen partial pressure of at least 10-10 atmospheres. Then, when the surface of the charge is substan- tially molten but before the surface of the charge reaches 1550°C., either (a) slag is removed from the surface of the charge or (b) a refractory oxide compatible with the vessel lining is added suffi- cient to form a viscous slag or (c) (permissible only with a basic vessel lining) basic oxide(s) and optionally a flux are added to form a fluid slag.
437301
Gowling Lafleur Henderson Llp
National Research Development Corporation
LandOfFree
Removing phosphorous from iron does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Removing phosphorous from iron, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Removing phosphorous from iron will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1301410