Sökning: "Tellurium"

Visar resultat 1 - 5 av 11 uppsatser innehållade ordet Tellurium.

  1. 1. Character and Evolution of Ore Mineralisation in the Te-Rich Enåsen Au-Cu Deposit, Central Sweden

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Simon Pieslinger; [2023]
    Nyckelord :ore geology; partial melting; quenching textures; symplectite; tellurides; critical metals;

    Sammanfattning : The Enåsen gold deposit is located in Gävleborg county in central Sweden. Mining operations at Enåsen took place from 1984 to 1991 with Au as the main target for exploitation. The deposit has been interpreted as a metamorphosed Palaeoproterozoic analogue to near-recent epithermal Au mineralisations of a high sulphidation type. LÄS MER

  3. 2. Återvinning av solcellsmoduler i Sverige : En undersökning av de energitekniska, ekonomiska och politiska förutsättningarna

    Uppsats för yrkesexamina på avancerad nivå, Mälardalens högskola/Akademin för ekonomi, samhälle och teknik

    Författare :Stephanie Andersson; [2021]
    Nyckelord :Circular economy; End-of-life management; Energy requirement; Photovoltaic modules; PV Recycling; Silicon modules; Thin film modules; Waste management; Avfallshantering; Cirkulär ekonomi; End-of-life management; Energiåtgång; Innovationskritiska material; Monokristallina solceller; Polykristallina solceller; Solcellsmoduler; Solcellsåtervinning; Tunnfilmssolceller;

    Sammanfattning : The solar industry is one of the fastest-growing energy industries in the global market. The reason is a combination of the falling prices of modules and inverters and increased conversion to fossil-free energy production. LÄS MER

  4. 3. Textural characterization of gold in the Björkdal gold deposit, northern Sweden.

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Geovetenskap och miljöteknik

    Författare :Fredrik Westberg; [2021]
    Nyckelord :Björkdal gold deposit; gold; gold-telluride; SEM; mineral association; grain size; geometallurgy;

    Sammanfattning : The Björkdal gold deposit is located in the eastern part of the Skellefte district, northern Sweden. Twenty thin sections from four production areas in the open pit and four drifts from the underground mine were analysed for mineral association and grain size distribution of gold. LÄS MER

  5. 4. Investigation of the Metal Content in Cress Seedlings fed with increased Concentration of Lead & Iron Solutions

    Kandidat-uppsats, Örebro universitet/Institutionen för naturvetenskap och teknik

    Författare :Nikita Burton; [2020]
    Nyckelord :Cress; iron; lead; metals; acidified digestion; MP-AES; ICP-MS;

    Sammanfattning : Metals are essential nutrients for plant health, but not all metals are necessary and can sometimes be harmful towards plants depending on factors such as species, elemental composition in the soil and concentration of a metal. Iron (Fe), which is one of the most abundant metals in the earth’s crust is also one the most important nutrients for plant growth, as it is responsible for metabolism. LÄS MER

  7. 5. Optimization of the steel-fiber dosage in shotcrete used in the Kankberg mine

    Master-uppsats, Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Författare :Pontus Larsson; [2018]
    Nyckelord :rock mechanics; shotcrete; bergmekanik; sprutbetong;

    Sammanfattning : The Swedish metal company Boliden has since the early 20th century been mining deposits in the mining field commonly referred to as the Skelleftefield in northern Sweden. The youngest of the active mines is the Kankberg mine which is an underground mine whose reserve contains gold and tellurium. LÄS MER