The invention discloses a dephosphorization method for
oxygen top-blown converter
slag remainder. The dephosphorization method includes the steps that before
slag-splashing for protection of a converter, a dephosphorization agent is added to the
slag remainder in the converter after tapping, then
inert gases are top-blown by an
oxygen gun for the operation of slag-splashing for protection of the converter, and dephoshprized slag remainder serve as initial slag of the next melt of
smelting. According to the method, the
oxygen top-blown converter slag remainder operation is combined with the slag remainder dephosphorization process, the
phosphorus content in the slag remainder can be lowered effectively, and the drag-in amount of
phosphorus in the next melt of converter
smelting process is lowered, so that the
lime addition amount in the next melt of converter
smelting process can be reduced, and the converter smelting cost is lowered. By the adoption of the dephosphorization method, part of the
phosphorus element in the slag remainder in the converter can be removed, the slag amount is small in the
smelting process, the heat loss is low, the iron loss is small, the converter slag dephosphorization effect is good, and the smelting cost is lowered remarkably.