The invention discloses a
smelting method for improving the
phosphorus removal rate of a converter. The method comprises the following steps of: at the later stage when steel splashing
slag is emptied in the converter, adding 500 to 800 kilograms of
lime, slightly stirring, pre-heating, adding waste steel, and blending molten iron; adding a bath of
slag forming material such as
lime, lightly burnt
magnesium blocks, ores and the like when blowing to 45 to 60 seconds, lifting an
oxygen lance by 200 millimeters when blowing for 4.5 minutes, continuously adding 4 to 5 batches of ores, and uniformly controlling the heating speed of a
molten pool to increase the FeO content of
slag; when blowing to 7 minutes, properly lowering the lance for 50 to 100 millimeters, meanwhile, reducing the
oxygen pressure to 0.80MPa, and continuously adding 2 to 3 batches of rest
lime; and keeping the position of the final point pressure lance at 1,000 millimeters for 1 minute. By adopting the method, full-process slag
smelting can be realized, the slag is not re-dried, a good
phosphorus removal effect is obtained, the
phosphorus removal rate is improved by 10 percent compared with the conventional
smelting process, and the requirement for smelting the molten iron with a high content of phosphorus can be met.