METHOD OF PREPARING SOLUTION FOR LEAD SALT PRODUCTION

• Main Authors: KHOLMOGOROV A.G, PASHKOV G.L, MIKHLINA E.V, ZORINA N.V
• Format: Patent
• Language: English; Russian
• Published: 10.10.2003
• Edition: 7
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; FERROUS OR NON-FERROUS ALLOYS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INORGANIC CHEMISTRY; METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF ALLOYS OR NON-FERROUS METALS

FIELD: nonferrous metallurgy. SUBSTANCE: method comprises precipitate of lead salt at pH <1.5 from salt solution following etching of lead concentrate. Then, lead sulfate carbonization is carried out with (Na2CO3+CO2) solution at 50-60 C to form lead carbonate, which is dissolved in inorganic or organic solvent. EFFECT: avoided pyrometallurgic processes, increased lead recovery, and improved environmental safety. 1 dwg, 2 tbl, 3 ex