Method for improving dephosphorization effect of titanium-containing high-phosphorus molten iron in converter dephosphorization period

The invention discloses a method for improving the dephosphorization effect of titanium-containing high-phosphorus molten iron in the converter dephosphorization period. The method comprises the following steps of: (1) pouring slags and remaining slags when tapping at the converter smelting end point of the last melt; (2) after the slag splashing furnace protection of the last melt is finished, sequentially adding a first batch of lime and scrap steel, preheating, and adding molten iron; (3) after ignition, respectively adding light-burned dolomite and a second batch of lime, maintaining high oxygen supply intensity, gradually reducing the lance position from the oxygen lance position to the lowest lance position, and adding sintering return mine; and (4) when the first batch of slag charge is molten, slagging, adding the second batch of slag charge, raising the lance position, reducing the oxygen supply intensity, stopping smelting, turning down the furnace, measuring the temperature and sampling. The method