Abstract:By studying the composition, properties and reaction characteristics of lead sulfate slag, heat balance calculation of synergistic treatment process was carried out. Combined with industrial experiments, the key process parameters such as proportion of anthracite lump coal, slag type control, and oxygen material ratio control were obtained when the proportion of lead sulfate slag was 15%. The optimum smelting conditions of SKS lead smelting process for synergistic treatment of lead sulfate slag were explored, so as to further improve the capacity of bottom blowing furnace to treat lead sulfate slag.