Sökning: "Comminution"

Visar resultat 16 - 20 av 39 avhandlingar innehållade ordet Comminution.

  1. 16. 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

  3. 17. Analysis and Modelling of Mineral and Element Composition in Compression Breakage

    Författare :Lorena Guldris Leon; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; minerals; rare metals; elements; cone crusher; modelling; compressive crushing;

    Sammanfattning : The outstanding properties of tungsten and tantalum make them valuable metals and, in some cases, irreplaceable in applications. The growing interest due to the high economic importance and the limited supply places these metals in the critical metals risk list. LÄS MER

  4. 18. Improving the efficiency of forest fuel supply chains

    Författare :Anders Eriksson; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : Forest biomass has gained much interest as a resource for renewable energy production world-wide. In Sweden, easily accessible secondary forest fuels, such as by-products from the conventional forest industry, are today already fully utilised. LÄS MER

  5. 19. A discrete-event simulation approach to improve efficiency in stump fuel supply chains

    Författare :Anders Eriksson; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Current concerns about climate change and fossil fuel dependency have intensified interest in renewable energy and increased demand for sustainable alternatives. Softwood tree stumps could be a very interesting renewable fuel assortment. The stump-root system constitutes about 25% of stem volume. LÄS MER

  7. 20. Studies on patients with a proximal humerus fracture. With special reference to mortality, fragility, morbidity and outcome

    Författare :Christian Olsson; Ortopedi - klinisk och molekylär osteoporosforskning; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Medicine human and vertebrates ; outcome; fragility; morbidity; proximal humerus fracture; mortality; Medicin människa och djur ;

    Sammanfattning : Fractures of the proximal part of the humerus occur frequently, especially in elderly women. The present thesis summarizes a series of studies analysing the impact on fracture outcome of factors related both to the fracture itself and to the patient. LÄS MER