Sökning: "metal sulphide oxidation"

Visar resultat 11 - 15 av 24 avhandlingar innehållade orden metal sulphide oxidation.

1. 11. Geochemical effects of soil cover remediation on sulphide-rich tailings at the Kristineberg mine, northern Sweden

   Författare :Erik Carlsson; Luleå tekniska universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Applied Geology; Tillämpad geologi;

   Sammanfattning : Remediation of mine waste by the application of till cover is one of the more common methods used in Sweden to prevent oxidation of sulphide-rich minerals. Although the general conclusion from Swedish state-of-the-art field studies is that dry covers may be effective, they are expensive to construct. LÄS MER

3. 12. Geochemical processes in sulphidic mine tailings : field and laboratory studies performed in northern Sweden at the Laver, Stekenjokk and Kristineberg mine-sites

   Författare :Henning Holmström; Luleå tekniska universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Applied Geology; Tillämpad geologi;

   Sammanfattning : This thesis presents geochemical, mineralogical and laboratory studies of unremediated and remediated tailings at two abandoned mine sites; at Laver and Stekenjokk and at one active mine site; the Kristineberg mine. At Laver the Cu released from oxidation is enriched in an enrichment zone just below the oxidation front. LÄS MER

4. 13. A model of pH and redox buffer depletion in waste landfills

   Författare :James Crawford; KTH; []
   Nyckelord :;

   Sammanfattning : The geochemical processes governing the release of heavymetal contaminants from solid waste materials have been studiedexperimentally and modelled using a mass balance approach. Theaim of the modelling work was to develop calculation tools thatcan be used to predict the release rate of heavy metals fromwaste heaps or landfills. LÄS MER

5. 14. Weathering kinetics of sulphidic mining waste

   Författare :Bo Strömberg; KTH; []
   Nyckelord :;

   Sammanfattning : The leaching of soluble metal contaminants from mining wasteis of great environmental concern, since it represents a threatto the surrounding aquatic environment. In this thesis,geochemical processes that contribute to the release of acidicmine drainage from waste rock are investigated. LÄS MER

7. 15. Experimental and modelling studies of the thermophysical and thermochemical properties of some slag systems

   Författare :Lijun Wang; Seshadri Seetharaman; Kuo-Chih Chou; Miyuki Hayashi; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; Teknisk materialvetenskap;

   Sammanfattning : In order to optimize the metallurgical processes it is necessary to improve the understandings of the industrial slag properties, which include thermophysical and thermochemical properties. In the present study Mass Triangle Model was applied to predict these properties. LÄS MER