Method for removing tin from lead bullion by adopting brim stone

The invention discloses a method for removing tin from lead bullion by adopting brim stone. The method comprises the following steps of: smelting the tin-containing lead bullion in a smelting device, and then adding sulphur powder into the molten tin-containing lead bullion at the temperature of between 450 and 650 DEG C; fully mixing the sulphur powder and the molten bullion in a stirring way, and preparing SnS from the sulphur powder and the tin in the molten bullion, wherein a specific gravity of the SnS is light, so the SnS can float upward to the surface of the molten bullion to form dross, and then removing the dross; and stirring the molten bullion for 10 to 70 minutes and stopping stirring, and after fishing the dross on the surface of the molten bullion out, performing ingot casting. The refined and tin-removed lead ingot is prepared, and the content of the tin in the lead (wSn) is less than or equal to 0.001 mass percent; and the method reduces lead volatilization, removes alkali vapor and NOX gas,