Sökning: "Pickling"

Visar resultat 11 - 15 av 16 uppsatser innehållade ordet Pickling.

  1. 11. 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

  3. 12. Statistisk kvalitetsvärdering för optimering av processteg i aluminiumanodisering : Utvärdera avverkning på aluminiumdetaljer i avverkningsbad

    Uppsats för yrkesexamina på grundnivå, Linköpings universitet/Institutionen för fysik, kemi och biologi; Linköpings universitet/Tekniska fakulteten

    Författare :Kerstin Jungmalm; [2015]
    Nyckelord :Pickling; anodization; statistical experimental design.;

    Sammanfattning : The intention with this thesis was to evaluate how much pickling that have been achieved on aluminium details in the pickling bath before the anodization in an anodization process. As there were no earlier studies to use around pickling before anodization, statistical experimental design was chosen as planning tool. LÄS MER

  4. 13. 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

  5. 14. Effect of shot blasting on processoxidised stainless steel – morphology,chemistry and pickling performance

    Master-uppsats, KTH/Materialvetenskap

    Författare :Johan Myrsell; [2014]
    Nyckelord :Stainless steel; oxide; pickling; shotblasting;

    Sammanfattning : The oxide scale created during manufacturing of stainless steel is often removed by a chemical pickling with mixed acid. Various pre-treatments to pickling are also applied to increase the efficiency of the oxide scale removal. LÄS MER

  7. 15. Treatment of Spent Pickling Acid from Stainless Steel Production : A review of regeneration technologies with focus on the neutralisation process for implementation in Chinese industry

    Master-uppsats, KTH/Industriell ekologi

    Författare :Lena Dahlgren; [2010]
    Nyckelord :acid regeneration; acid neutralisation; pickling waste water treatment; environmental effects of stainless steel production; nitrate reduction; High Density Sludge process; HDS process; syraåtervinning; neutralisering; behandling av avlopp från betning; denitrifiering; miljöeffekter av stålproduktion; High Density Sludge process; HDS;

    Sammanfattning : Pickling is a unit operation within stainless steel production, which means treating the steel with hydrofluoric acid (HF) and nitric acid (HNO3), also called mixed acid. The whole process generates waste water streams which have to be treated before released to recipient. LÄS MER