The choice between preparation of elemental lead or lead powder from galena concentrates from FYROM mines

Krstev, Aleksandar and Krstev, Boris and Golomeov, Blagoj and Golomeova, Mirjana and Krstev, Dejan (2011) The choice between preparation of elemental lead or lead powder from galena concentrates from FYROM mines. MTM '12.

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Abstract

Processing of the galena concentrates is developed as an effctive low-temperature leaching-electrowining method to produce Pb metal and elemental sulfur from galena concentrates. The method reduces Pb emissions and totally eliminates the formation of sulfur gases. The elemental S produced is more economical to store and ship than the sulfuric acid (H2SO4) generated by the high-temperature smelting process. This hydrometallurgical method consists of leaching galena concentrates in waste flu silicic acid or flu boric acid(H2SiF6 – HBO4) with oxidants at 95o, electrowinning the (PbSiF6) solution at different To to produce 99,99%Pb metal, and solvent extraction to recover S, leaving a residue containing eventually present Cu, Ag, and other metal values.Hence, a new approach of preparing PbSO4 from galena concentrates in the sulfuric acid (H2SO4) and ferric chloride media coupled with selective purification and chemical sedimentation was proposed.

Item Type: Article
Subjects: Engineering and Technology > Other engineering and technologies
Divisions: Faculty of Natural and Technical Sciences
Depositing User: Aleksandar Krstev
Date Deposited: 17 Dec 2012 11:12
Last Modified: 17 Dec 2012 11:12
URI: http://eprints.ugd.edu.mk/id/eprint/3757

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