Pros
n use high carbon ferro- chrome and to decarburize the bath at selectively
lower temperatures would be required. If carbon is to be oxidized in preference to Cr at low
temperatures, a reduction in pressure of CO from 1 atmosph
Cons
f argon +oxygen is injected through the tuyeres located on the side of the converter shell.
Fe-Cr- Ni-C alloy melt is prepared in EAF. Melt is charged in AOD vessel. High carbon-ferrochrome is
charged. In the initial stage a mixture of O2: Ar in 3:1 ratio is blown through the side tuyeres. When
carbon reduces to 30% of the original value the ratio of O2: Ar is changed to 2: 1 and blow is continued
to attain 0.09 to 0.12% C. First stage of blow generates sufficient amount of heat due to oxidation of Cr
and hence coolants are added (5%