Sökning: "AOD converter"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden AOD converter.

  1. 1. Stabilisering av Aluminiumreducerad AOD-slagg.

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Industriell miljö- och processteknik

    Författare :Fredrik Axelsson; [2019]
    Nyckelord :AOD; slagg; sönderfall; metallurgi;

    Sammanfattning : Slagg har historiskt använts som konstruktionsmaterial i olika applikationer. Alla typer av slagg passar inte på grund av otillräckliga egenskaper. Vid produktion av höglegerat rostfritt stål så är slaggen mycket kalkrik, vilket leder till sönderfall på grund av absorption av vatten. LÄS MER

  3. 2. What If We Tilt the AOD? : Developing a numerical and physical model of a downscaled AOD converter to investigate flow behaviour when applying an inclination.

    Master-uppsats, KTH/Materialvetenskap

    Författare :Serg Chanouian; [2019]
    Nyckelord :AOD; inclination angle; penetration depth; mixing time;

    Sammanfattning : In a scrap based stainless steel plant the dominant process for carbon reduction is the Argon oxygen decarburisation process (AOD). The process goes through three steps: decarburisation, reduction and desulphurisation where the main challenge is to oxidise carbon to CO without oxidising the expensive chromium. LÄS MER

  4. 3. Neutralizing acidic wastewater from the pickling process using slag from the steelmaking process : A pilot study in project "Neutralsyra"

    Kandidat-uppsats, KTH/Materialvetenskap

    Författare :Julia Brännberg Fogelström; Amelie Lundius; Hedda Pousette; [2017]
    Nyckelord :Slag; Neutralization; Lime; Lime Concentrate; Acidic wastewater; pH; Landfill; Byproducts; Slagg; Neutralisering; Kalk; Kalkkoncentrat; Surt avfallsvatten; pH; Deponi; Restprodukter;

    Sammanfattning : Properties and origins of two byproducts from steelmaking plants, slag and acidic wastewater, are investigated in this report. The slags' suitability as neutralizing agents of acidic wastewater from the pickling process, with regard to amount of slag required and the environmental impact of the produced byproducts is investigated. LÄS MER

  5. 4. Acid neutralization using steel slags : Adsorption of fluorides in solutions using AOD slags

    Kandidat-uppsats, KTH/Materialvetenskap

    Författare :Jesper Larsson; [2015]
    Nyckelord :acid neutralization; AOD slag; fluoride adsorption; syraneutralisering; AOD slagg; fluoradsorption;

    Sammanfattning : Surface treatment processes of stainless steel, such as pickling, produces acidic waste water consisting of Na⁺, Cl⁻, F⁻, NO⁻3, SO42-, PO43-, Fe3+, Cr6+ and Ni2+. At Sandvik ABs steel works in Sandviken, this waste water is treated and neutralized using slaked lime before being released into the lake Storsjön. LÄS MER

  7. 5. Possibilities and limitations of exhaust gas analysis for expanded use in control of an AOD-converter

    Master-uppsats, KTH/Tillämpad processmetallurgi

    Författare :Jonas Laxén; [2012]
    Nyckelord :: Exhaust gas analysis; off-gas analysis; dynamic model; carbon prediction model; AOD converter; carbon content;

    Sammanfattning : The main purpose of the AOD-converter is to lower the carbon content in stainless steel production. The carbon content can be estimated by static theoretical models. It can also be estimated through dynamic models based on analysis of the exhaust gases from the converter. LÄS MER