The invention belongs to the technical field of steel and iron
smelting, and relates to a deformed
steel bar converter
slag washing desulfurization method. The deformed
steel bar converter
slag washing desulfurization method comprises the following steps: adding a top
slag modifier into a steel
ladle in a converter tapping process to control the components of steel
ladle top slag, deoxidizing
molten steel at first to reduce the
oxygen activity in the
molten steel, and then increasing the O<2->
ion concentration in the steel
ladle top slag to desulfurize the
molten steel; and stirring the steel ladle top slag and the molten steel by means of
kinetic energy of the molten steel in the tapping process, and meanwhile, blowing
argon or
nitrogen into the steel ladle for stirring to accelerate a reaction between the steel and the slag. The deformed
steel bar converter slag washing desulfurization method is optimized on the basis of an original technology, no equipment or facilities are added, original conditions are fully utilized, and implementation is easy; and meanwhile, a desulfurization material
utilization rate is high, and the usage amount is reduced, so that the cost is reduced.