DBPapers

PHYSICOCHEMICAL CHARACTERIZATION OF PYRITE CINDERS

AUTHOR/S: A. SHOUMKOVA, V. STOYANOVA
Sunday 1 August 2010 by Libadmin2010

10th International Multidisciplinary Scientific GeoConference - SGEM2010, www.sgem.org, SGEM2010 Conference Proceedings/ ISBN 10: 954-91818-1-2, June 20-26, 2010, Vol. 2, 701-708 pp

ABSTRACT

A detailed investigation of physical and chemical properties of pyrite cinders from
sulfuric acid production has been carried out by employing variety of analytical
methods and techniques, including ICP-MS, XRL, XRD, Mössbauer Spectroscopy,
SEM-EDX, SQUID, TGA, etc.

The study is focused on the investigation of the content and distribution of about 50
micro- and trace elements in magnetically separated fractions, and among/within
individual particles. It has been found that many heavy metals exist in easily available
forms, being concentrated predominantly in singe particles, or on the surface of iron
oxides. Some elements (such as Co, Cr, Hf, Ni, Ta, V and W) are slightly enriched in
magnetic fractions, but most of micro and trace elements (As, Ba, Cd, Ce, Nd, La, Mn,
Mo, Pb, Sb, Se, Sr, Tl, U, etc.) are more concentrated in nonmagnetic fractions.

Keywords: pyrite cinders, solid waste, trace elements, heavy metals, Bulgaria