Physico-chemical investigation of synthesis of lead salts from sulfide lead concentrate

The leaching of lead from lead–zinc concentrates by iron(III) salt solutins in the absence, as well as in the presence of mineral acids (HCl, H2SO4, HNO3) has been investigated. It was shown that the leaching of lead by means of 0.3 M Fe(NO3)3 at (22 ± 1) oC leads to practically complete recovery of lead during 1 h. This conclusion was confirmed by data obtained using chemical, thermographical and X-ray photographical methods. Atechnological scheme for the synthesis of lead salts and oxides without the production of metal lead has been developed as a result of the present investigation.