1988 Volume 74 Issue 2 Pages 270-277
Low phosphorus hot metal is mass-produced by use of cast floor desiliconization and ladle dephosphorization, and less slag converter practice is established. Efficient manganese are smelting reduction in the converter has been realized, and high manganese yield, i.e., 65 to 70% is attained at high manganese i.e., [Mn]=1% level.
It is essential for the efficient recovery of manganese to obtain low phosphorus hot metal to the level of [P] 0.013% and to attain the highly accurate decarburization control, reduction ot (FeO), and slag basicity and a uantitv control in the converter.
By use of this new technology, it has become possible to reduce the expensive ferromanganese alloy consumption, and the cost of converter steelmaking.
