Sökning: "Iron reduction"

Visar resultat 1 - 5 av 93 uppsatser innehållade orden Iron reduction.

  1. 1. A Geophysical Survey of Northern Utö

    Master-uppsats, Stockholms universitet/Institutionen för geologiska vetenskaper

    Författare :Nicole Flanders; [2023]
    Nyckelord :;

    Sammanfattning : A geophysical investigation on the northern part of Utö was carried out between 2020 and 2021 to asses the extent of the iron ore (BIFs) and the iron bearing sulfides that have been surveyed and mined in the past. The survey using analog field equipment combined magnetometry, gravimetry, susceptibility, leveling, density, and thin-section microscopy. LÄS MER

  3. 2. Fastläggning av arsenik med nollvärt järn i mikrostorlek : Uppföljning av ett pilotskaleförsök

    Uppsats för yrkesexamina på avancerad nivå,

    Författare :Frida Aronsson; [2023]
    Nyckelord :contaminated soil; arsenic; zero-value iron; mZVI; pilot test; pilot study; förorenad mark; arsenik; nollvärt järn; mZVI; pilotförsök; pilotstudie;

    Sammanfattning : Land contaminated with arsenic is a major problem as arsenic is toxic and poses a major health risk to both humans and animals. There are several remediation methods, both in-situ and ex-situ, to prevent and deal with pollution problems in different ways. LÄS MER

  4. 3. Electrolytic Reduction of Iron Oxides in Molten Salt with a Mineralogical Investigation of Magnetite Ore of Tapuli

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

    Författare :Elina Fernö; [2023]
    Nyckelord :Iron reduction; trace element analysis on magnetite ore; molten salt electrolysis; sodium hydroxide electrolyte; NaOH; greenhouse gas; carbon dioxide; CO2; green ironmaking; Järnreduktion; spårelementanalys på magnetitmalm; smältelektrolys; elektrolys i natriumhydroxid; NaOH; elektrolyt; växthusgas; koldioxid; CO2; grön järnframställning;

    Sammanfattning : This master's thesis covers an investigation of the reduction behavior of different iron oxides when electrolytically reduced with molten salt electrolysis (MSE). The tested iron oxides were wüstite (FeO), hematite (Fe2O3), magnetite (Fe3O4) and magnetite ore concentrate from the Tapuli deposit in Pajala, Norrbotten, Sweden. LÄS MER

  5. 4. Has the EU ETS been efficient in reducing carbon dioxide emissions without harming firm revenue?

    Kandidat-uppsats, Lunds universitet/Ekonomisk-historiska institutionen

    Författare :Elin Raab; [2023]
    Nyckelord :Social Sciences;

    Sammanfattning : The increasing urgency of climate change has raised the need for effective climate policy. The European Union emissions trading system (EU ETS) is the world’s first and largest ‘cap and trade’ policy which aims at reducing carbon dioxide emissions at the most cost-efficient allocation. LÄS MER

  7. 5. 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