Sodium sulfide beneficiation method for high-iron binary system smelting slag

The invention provides a sodium sulfide beneficiation method for high-iron binary system smelting slag, which comprises the following steps: 1) crushing the high-iron binary system smelting slag to obtain ore grains; (2) carrying out ball-milling ore grinding operation to obtain ore pulp; (3) adding an agent p510, terpenic oil and sodium sulfide into the ore pulp for activation, and carrying out first-stage rapid flotation to obtain first-stage concentrate; (4) carrying out ball-milling ore grinding operation on the residual ore pulp after rapid flotation to obtain ore pulp; 5) adding an agent p510, terpenic oil and sodium sulfide into the ore pulp for activation, and carrying out second-stage flotation to obtain second-stage concentrate; and scavenging, drying and delivering. Sodium sulfide is added and can react with copper ions on the surface of copper oxide ore, copper oxide of a high-iron binary system is vulcanized into copper sulfide, hydrophobicity is improved, namely, the collecting capacity of the P