Details zur Publikation |
Kategorie | Textpublikation |
Referenztyp | Zeitschriften |
DOI | 10.1016/S0048-9697(99)00300-9 |
Titel (primär) | Surfactant separation as a technique for physical and chemical characterization of ore processing residues |
Autor | Prud'homme, F.; Morency, M.; Freyer, K.; Weiß, H.
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Quelle | Science of the Total Environment |
Erscheinungsjahr | 1999 |
Department | ANA; GWS; PB IBFL |
Band/Volume | 243/244 |
Seite von | 9 |
Seite bis | 20 |
Sprache | englisch |
Keywords | X-ray-diffraction; extraction; sorption; radium; metals; soils |
Abstract | When characterizing multi-phase materials, several authors have recommended separating the material into various fractions consisting of a reduced number of minerals. However, the common separation techniques are of limited value when treating ultra-fine-grained materials. We present in this paper a separation technique using tensio-active solutions which break up any particle agglomerates which may be present and facilitates sedimentation of component particles according to grain size. These fractions have a distinctive mineralogy and chemistry. The technique has been applied to two selected samples from two mining residue sites in Germany. Results from Bielatal, a tin residue, show that a large proportion of the arsenic and heavy metals are concentrated in a suspension fraction, which consists of clay minerals and amorphous iron oxyhydroxides. Silicates such as a micas and feldspar settle out quite rapidly, whereas, other minerals, such as hematite take longer. In the case of Dankritz, a uranium mine waste, the same technique was applied and similar results were obtained for the heavy metals distribution. Additional study indicated that radium is with barite and other radio-isotopes were associated with the fine suspension fraction. |
dauerhafte UFZ-Verlinkung | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=8304 |
Prud'homme, F., Morency, M., Freyer, K., Weiß, H., Bourne, J., Daus, B., Fontaine, D., Mattusch, J., Mineau, R., Preda, M., Treutler, H.-C., Wennrich, R. (1999): Surfactant separation as a technique for physical and chemical characterization of ore processing residues Sci. Total Environ. 243/244 , 9 - 20 10.1016/S0048-9697(99)00300-9 |