A Technology of Lead Sulfate Hydrometallurgical Lead Smelting

Abstract The present invention belongs to hydrometallurgical technology, which relates to the technology of lead production using the wholly hydrometallurgical technology to lead sulfate(PbSO 4) residue accompanied the process of zinc smelting through hydrometallurgy or lead mud of lead storage battery. The present technology use CaCl 2 + NaCl as leaching solvent, leach the high leaching slag containing lead sulfate of hydrometallurgical zinc smelting, lead slag of the zinc oxide containing lead after lead leaching or the lead mud of the lead acid storage battery after being disassembled, use zinc to displace lead in the leached solution, recycle lead in the displaced solution, the recycled lead is returned back to the process of displacing of lead, the solution containing CaCl 2 + NaCl after zinc recycling is recycled to the process of leaching of chlorine salt of lead sulfate. The present invention has the advantages of low energy consumption, low cost and easy popularization and application, and eliminate utterly the fume pollution of lead fume, lead dust and SO 2 etc. 1~ Zinc Lead Sulfate Slag(mud)-Leaching of Chlorine Salt---> Purification of Solution-. Using Zinc to Displace Lead---> Recycling of Zinc I I I Solution Residue of Plaster Purification and Recycling of Lead Ag, Cu, Bi I Smelting Casting Fig. 1