Sökning: "pellets"

Visar resultat 11 - 15 av 334 uppsatser innehållade ordet pellets.

  1. 11. Optimal process design with simulation-based optimization

    Master-uppsats, KTH/Matematik (Avd.)

    Författare :Giulia Grasso; [2023]
    Nyckelord :Optimization; Multi-Objective; Simulation-based; Optimering; flermålsoptimering; simuleringsbaserad;

    Sammanfattning : Nowadays, it has become crucial to transform company production processes in order to reduce carbon emissions. Therefore, the company LKAB is working to make the production process of iron ore pellets fossil-free. In particular, this thesis project focuses on the pellet induration stage and addresses the mathematical optimization of the process. LÄS MER

  3. 12. Experimental studies of radiation damage in uranium nitride

    Master-uppsats, KTH/Fysik

    Författare :Maria Giamouridou; [2023]
    Nyckelord :uranium nitride nuclear fuel; advanced nuclear fuel; uranium nitride fabrication; uranium nitride characterisation; Spark Plasma Sintering; proton irradiation; irradiation damage; TANDEM accelerator; irradiation induced cracking; irradiation induced hardening; irradiation induced swelling; hydrogen implantation; dislocation loops; kärnbränsle av urannitrid; avancerat kärnbränsle; tillverkning av urannitrid; karakterisering av urannitrid; Spark Plasma Sintering; protonbestrålning; strålningsskador; TANDEM-accelerator; strålningsinducerad sprickbildning; strålningsinducerad härdning; strålningsinducerad svällning; väteimplantation; dislokationsloopar;

    Sammanfattning : The effect of proton (H+) irradiation on uranium mononitride (UN) and UN compositefuel with 10 at.% ZrN (UN10at%ZrN) was examined. Protons of 2 MeV with fluences of1E17, 1E18, 1E19 and 1E20 ions/cm2 were accelerated towards the fabricated samples in orderto investigate the evolution of the micro-structure. LÄS MER

  4. 13. The transition of reaction-to-fire behavior from biomass to corresponding biochar

    Uppsats för yrkesexamina på grundnivå, Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Författare :Jacob Johansson; [2023]
    Nyckelord :biochar; biomass; heat release rate; reaction-to-fire;

    Sammanfattning : As of now, the environmental issue is very topical and there is also an underutilization of different biological material where these can be used in ways that are typically not thought of. One way to increase the degree of utilization is to convert various biomasses such as natural rubber, olive pits, wood chips, and reed pellets into biochar. LÄS MER

  5. 14. A Cost Benefit Analysis of Continuous Cover Forestry in Djurholmen, Skåne

    Kandidat-uppsats, Lunds universitet/Centrum för miljö- och klimatvetenskap (CEC)

    Författare :Moa Morency; [2023]
    Nyckelord :continuous cover forestry CCF ; clear-cut forestry CF ; cost-benefit analysis CBA ; ecosystem services; climate mitigation; timber production; Norway Spruce Picea abies ; Earth and Environmental Sciences;

    Sammanfattning : Forests and forest products are important, not just for timber production, the forest ecosystem plays several important roles, such as water purification, carbon sequestration for climate mitigation and recreational values. How the forests are managed varies throughout the globe, in Sweden the most used system is the clearcutting system (CF), however continuous cover forestry (CCF) is gaining popularity and is being tested in several places. LÄS MER

  7. 15. Bricklaying robot for installation ofrefractory material in grate-kiln systems

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Johan Johansson; [2023]
    Nyckelord :;

    Sammanfattning : LKAB is Europe’s biggest producer of iron pellets and is constantly trying to improvetheir production methods and maintenance work to reduce downtime and increasethe production volume. A critical step of the pellets production is the reduction stepinvolving the roterary oven which is one of the most prone steps in the productioncycle of needing maintenance work. LÄS MER