Sökning: "Steel recycling"

Visar resultat 1 - 5 av 42 avhandlingar innehållade orden Steel recycling.

  1. 1. Experimental studies to overcome the recycling barriers of stainless-steel and BOF slags

    Författare :Mattia De Colle; Pär Jönsson; Andrey Karasev; Muxing Guo; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; stainless steel; slag; recycling; sustainability; Teknisk materialvetenskap; Materials Science and Engineering;

    Sammanfattning : This thesis presents several studies aimed at improving the recycling of steel slag. The studies are based on a first evaluation of the state-of-the-artof the recycling applications both with respect to their possibilities and limitations. LÄS MER

  3. 2. Improved mapping of steel recycling from an industrial perspective

    Författare :Alicia Gauffin; Anders Tilliander; Ichiro Daigo; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Recycling rate; lifetime; steel scrap; scrap reserve; dynamic material flow modelling; environmental analysis; greenhouse gas emissions; energy; alloy content; forecasting; backcasting; Teknisk materialvetenskap; Materials Science and Engineering;

    Sammanfattning : The results from this study show that it is possible to obtain data series on the steel scrap collection based on mass balance model on the crude steel production figures by steelmaking reactor type and additional knowledge on process metallurgy as well as information on inputs and outputs into the reactors with an area correlation coefficient of 0,91 compared to data obtained from trade statistics. Furthermore, the study shows that based on a new method it is possible to calculate the time duration of mass flows on a continuous basis. LÄS MER

  4. 3. Towards a sustainable society : aluminium recycling and biomass energy

    Författare :Jessica Johansson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; recycling; biomass energy; alloying elements; crude steel; supply; quality; aluminium; down-cycling; agriculture; forestry;

    Sammanfattning : .... LÄS MER

  5. 4. Influence of Ladle-slag Additions on BOF-Process Parameters

    Författare :Anders Dahlin; Pär G. Jönsson; Joel Gustavsson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; BOF; slag formation; ladle slag; recycling; steel; composition; energy; Metallurgical process engineering; Metallurgisk processteknik;

    Sammanfattning : The influence of ladle-slag additions on the BOF-process performance were investigated in plant trials. The aim of the study was to recycle ladle slag from secondary steelmaking to the LD-converter to save lime and improve the slag formation. LÄS MER

  7. 5. Innovating Recycling of End-of-Life Cars

    Författare :Magnus Andersson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; End-of-Life; Scarce Metal; Material Flow Analysis; Vehicle; Technological Innovation System; Car; Critical Material; Recycling;

    Sammanfattning : There are currently a billion cars in use worldwide, and car design trends point at increasing variety in material utilisation. Cars today contain several types of steel and aluminium, an assortment of textiles and padding materials, and an increasing amount of polymers and scarce metals. LÄS MER