Home – Home – Jornals – Chemistry for Sustainable Development 2005 number 4

The work is focused on the most developed hydrometallurgical methods of lead and its compounds processing, using sulphuric and hydrochloric acids. Major drawbacks of these techniques, that hamper industrial use, are shown. In particular, the barriers caused by the low solubilities of lead sulphate and chloride. The usefulness of hydrometallurgical flowsheets involving nitric acid for lead-containing raw materials processing was shown. The advantages include: high degree of metal extraction (up to 96-99 %), almost complete reagents regeneration. Under the testing conditions the methods had demonstrated superior to pyrometallurgical processes ecological safety.