Sökning: "Mineral Processing"

Visar resultat 1 - 5 av 132 avhandlingar innehållade orden Mineral Processing.

  1. 1. Selectivity in Calcium mineral flotation - An analysis of novel an existing approaches

    Detta är en avhandling från Luleå University of Technology

    Författare :Tommy Karlkvist; Bertil Pålsson; Hanumantha Rao Kota; Saija Luukkanen; [2017]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Froth flotation; Mineral processing; Adsorption; Mineral specific reagents; surfactant; Mineral Processing; Mineralteknik;

    Sammanfattning : .... LÄS MER

  2. 2. Computational methods and strategies for geometallurgy

    Detta är en avhandling från Luleå : Luleå tekniska universitet

    Författare :Pierre-Henri Koch; Jan Rosenkranz; Eric Pirard; [2019]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Geometallurgy; process simulation; minerals; machine learning; textures; decision-making; Mineral Processing; Mineralteknik;

    Sammanfattning : At the interface of geology and mineral processing, geometallurgy is a powerful tool for enhancingresource efficiency. A spatial model that represents the ore body in terms ofmineralogyand physical properties is combined with a process model that describes the concentrationprocess. LÄS MER

  3. 3. Sampling from large flotation cells An invastigation of spatial distribution

    Detta är en avhandling från Luleå : Luleå tekniska universitet

    Författare :Lisa Malm; Jan Rosenkranz; Tommy Karlkvist; Anders Sand; Nils-Johan Bolin; Pertti Lamberg; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Flotation; sampling; Mineral Processing; Mineralteknik;

    Sammanfattning : The general trend in flotation technology today is towards larger flotation cells, which enables a higher throughput. However, adverse effects such as segregation and reduced froth transport efficiency have also been observed in larger cells. LÄS MER

  4. 4. Bringing predictability into a geometallurgical program An iron ore case study

    Detta är en avhandling från Luleå : Luleå University of Technology

    Författare :Viktor Lishchuk; Bertil Pålsson; Cecilia Lund; Lamberg Pertti; Jennifer Broadhurst; [2019]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Additivity; Apatite iron ore; AIO; Block model; Change of support; Classification; Data integration; DT; Feed quality; Geometallurgical program; Geometallurgy; Iron ore; Iron recovery; Leveäniemi; Liberation; Machine learning; Magnetic separation; Malmberget; Mineralogical approach; Mineralogy; Prediction; Proxies; Proxies approach; Sampling; Simulation; Synthetic ore body; Traditional approach; WLIMS; Mineral Processing; Mineralteknik;

    Sammanfattning : The risks of starting, operating and closing mining projects have become higher than ever. In order to stay ahead of the competition, mining companies have to manage various risks: technical, environmental, legal, regulatory, political, cyber, financial and social. Some of these can be mitigated with the help of geometallurgy. LÄS MER

  5. 5. Sulphide mineral flotation a new insight into oxidation mechanisms

    Detta är en avhandling från Luleå : Luleå tekniska universitet

    Författare :Alireza Javadi; [2013]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mineralteknik; Mineral Processing;

    Sammanfattning : Formation of hydrogen peroxide (H2O2), an oxidizing agent stronger than oxygen, by sulphide minerals during grinding was investigated. It was found that pyrite (FeS2), chalcopyrite (CuFeS2), sphalerite ((Zn,Fe)S), and galena (PbS), which are the most abundant sulphide minerals on Earth, generated H2O2 in pulp liquid during wet grinding in the presence or devoid of dissolved oxygen in water and also when the freshly ground solids are placed in water immediately after dry grinding. LÄS MER