Sökning: "Mineral Processing"

Visar resultat 21 - 25 av 157 avhandlingar innehållade orden Mineral Processing.

  1. 21. Svensk gruvrätt : En rättsvetenskaplig studie rörande förutsättningarna för utvinning av mineral

    Författare :Lars Bäckström; Jan Darpö; Luleå tekniska universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Law Jurisprudence; Gruvrätt; mineral; utvinning; koncession; tillståndsprövning; miljöprövning; Rättsvetenskap Juridik; Law; Rättsvetenskap;

    Sammanfattning : Swedish landowners Historically, Swedish landowners have been forced to accept that that their land is claimed for mining activities. This has been done on the basis of different laws and legal rules. The Minerals Act currently in force also entitles third parties to extract miner-als from other people's property. LÄS MER

  3. 22. Design and Development of Mineral Structure Specific Collectors in Flotation

    Författare :Tommy Karlkvist; Beena Rai; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mineralteknik; Mineral Processing;

    Sammanfattning : The success of mineral flotation processes depends on the hydrophobization of the surface for the desired mineral particles whilst keeping, or making, all other minerals hydrophilic. This is achieved by adding several reagents to the flotation pulp to adsorb selectively at the mineral/water interface. LÄS MER

  4. 23. Bacteria-sulfide mineral interactions with reference to flotation and flocculation

    Författare :Annamaria Vilinska; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mineralteknik; Mineral Processing;

    Sammanfattning : Biological processes have been attracting attention in mineral processing industry due to their lower operating costs, environmental acceptability and flexibility in adaptation. Bio-hydrometallurgical methods to treat various sulfide and oxide ores have been developed during the years and these processes have been adopted by certain industries. LÄS MER

  5. 24. Wet magnetic concentration for weakly magnetic mineral fines and ultrafines

    Författare :Wang Yanmin; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mineralteknik; Mineral Processing;

    Sammanfattning : The first objective of the thesis was to reveal the characteristic magnetic behaviour of natural weakly magnetic minerals (such as hematite and chromite), and the size limits of the particles recoverable by the existing modem high intensity and high gradient magnetic separators. The second objective was to enhance the particle aggregation andlor the magnetic response for wet magnetic concentration of the ultrafines which escaped from the separators. LÄS MER

  7. 25. Efficient mineral liberation – Multidimensional investigation of mechanical stress and ore texture

    Författare :Parisa Semsari Parapari; Jan Rosenkranz; Mehdi Parian; Hakan Benzer; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Loading mechanism; Ore texture; Breakage mode; Fracture energy; Fragmentation; Breakage mechanism; Statistical analysis; 3D Deformation; Crack quantification; Mineral Processing; Mineralteknik;

    Sammanfattning : Within mineral comminution, the product properties (such as particle size distribution and mineral liberation characteristics) along with process efficiency are affected by material related and process environment factors. Understanding and optimizing these factors leads to designing and developing an energy-efficient process with a specified product. LÄS MER