Investigates thermodynamically the Pb-oxychlorides formed during urban refuse incineration/melting by way of high-temperature XRD and activity determination of such solid oxychlorides,including the binary phase diagram of PbO-PbCl_2,the relative chemical potential of PbO and standard free energy of formation or Gibbs free energy of activation of intermediate compounds.

8%, and the purity of the lead chloride obtained was 98.

By adopting the process of oxidizing roasting hydrothermal lead elimination-dissolving bismuth with hydrochloric acid, it is possible to separate Bi and Pb in the anode slime from tin electrolysis and produce quality bismuth oxychloride and lead chloride crystals as well as tin concentrate, thus utilizing comprehensively the resource.