Sökning: "järnmalm"

Visar resultat 6 - 10 av 62 uppsatser innehållade ordet järnmalm.

  1. 6. The Kinetics of Water Removal From an Iron Ore Pellet Prior to Hydrogen Reduction

    Kandidat-uppsats, KTH/Materialvetenskap

    Författare :Maja Andersson; Jonathan Garte; Johan Karlsson; [2023]
    Nyckelord :;

    Sammanfattning : Humanity is facing one of the biggest challenges ever presented in fighting climate change. To counter global warming, industries and scientists across the world are shifting manufacturing towards fossil independence in order to decrease emissions. LÄS MER

  3. 7. Hydrogen-induced Fluidized Bed Reduction : Evaluation of the Effect of Pressure, Particle Size, Gas Mixture and Temperature on the Minimum Fluidization Velocity of Iron Ore Fines

    Kandidat-uppsats, KTH/Materialvetenskap

    Författare :Joakim Käck; Sebastian Uhlin; [2023]
    Nyckelord :;

    Sammanfattning : Steel is used worldwide and there are demands for an increase in current production. The problem emerges because steel and iron-making industries release vast amounts of CO2 and need to be more environmentally sustainable. LÄS MER

  4. 8. Theoretical Considerations and Experimental Observations on Heat Transfer in Hydrogen Direct Reduced Iron

    Master-uppsats, KTH/Materialvetenskap

    Författare :Felix Göttfert; [2023]
    Nyckelord :Hydrogen Direct Reduced Iron H-DRI ; Hydrogen Hot Briquetted Iron H-HBI ; Heat Transfer; Thermal Conductivity; Thermophysical Properties; Hydrogen Direct Reduced Iron H-DRI ; Hydrogen Hot Briquetted Iron H-HBI ; Värmeöverföring; Termisk konduktivitet; Termofysiska egenskaper;

    Sammanfattning : Steel has played an indispensable role in shaping our contemporary world  and will persist to play that role for the foreseeable future. However, the steel industry currently is responsible for 7% of the global CO2-emissions, primarily due to the conventional carbon-based reduction process of iron ore. LÄS MER

  5. 9. Study of stability improvement measures meeting the effects of new use of a secondhand cement carrier vessel

    Master-uppsats, KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

    Författare :Jansen Novri; [2022]
    Nyckelord :ship modification; cargo type; stability code; center of gravity; center of buoyancy; fartygsmodifiering; lasttyp; stabilitetskod; tyngdpunkt; flytkraftscentrum;

    Sammanfattning : Secondhand ship is an option to improve marine business competitiveness. It provides a way for ship owners to integrate customer market rapidly without spending many resources on producing new ships. However, secondhand ships that perfectly suit owner's requirements becomes unavoidable challenge. LÄS MER

  7. 10. Extraction of Backfilled Tailings in the Dannemora Mine – Economic Potential and Rock Stability Assessment

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :John Winlund; [2022]
    Nyckelord :backfilled tailings; Dannemora mine; iron ore; rock stability; stopes; återfylld anrikningssand; Dannemoragruvan; järnmalm; bergstabilitet; öppna brytningsrum;

    Sammanfattning : The cut-off grade determines what rock mass are economic to mine. At the Dannemora mine, in eastern Bergslagen, Sweden, previously processed ore generated tailings (enrichment sand) with an iron content of 21-22 % that was backfilled into large open bodies (stopes) in the mine between 2013-2015. LÄS MER