Search for dissertations about: "MgO-C"

Found 5 swedish dissertations containing the word MgO-C.

  2. 1. A study on the Submerged Entry Nozzels (SEN) respecting clogging and decarburization

    Author : Arashk Memarpour; Pär Jönsson; Sune Jansson; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Refractory; SEN; Clogging; REM; Coating; glaze; alkaline; Refractory; ZrSi2; Graphite; Alumina; Oxidation; Al2O3-C; ZrO2-C; MgO-C; decarburization; reaction mechanism; Materials science; Teknisk materialvetenskap;

    Abstract : The submerged entry nozzle (SEN) has been used to transport the molten steel from tundish to the mould. The main purpose of the SEN usage is both to prevent oxygen and nitrogen pick-up by molten steel and to achieve the desired flow condition in the mould. READ MORE

  4. 2. An Experimental Study of Submerged Entry Nozzles (SEN) Focusing on Decarburization and Clogging

    Author : Arashk Memarpour; Pär Jönsson; Torbjörn Carlberg; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Refractory; SEN; Clogging; REM; Coating; glaze; alkaline; Post- Mortem; industrial preheating; ZrSi2; Graphite; Alumina; Oxidation; Al2O3-C; ZrO2-C; MgO-C; decarburization; reaction mechanism; Yttria Stabilized Zirconia; plasma spray-PVD coating;

    Abstract : The submerged entry nozzle (SEN) is used to transport the molten steel from a tundish to a mould. The main purpose of its usage is to prevent oxygen and nitrogen pick-up by molten steel from the gas. Furthermore, to achieve the desired flow conditions in the mould. READ MORE

  5. 3. A Study on the Influence of Steel, Slag or Gas on Refractory Reactions

    Author : Sune Jansson; Pär Jönsson; Lauri Holappa; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Metallurgical process engineering; Metallurgisk processteknik;

    Abstract : During the production of steel the oxide inclusion content partly depends on the reaction of the melt with the furnace lining, the ladle lining and the pouring system. The refractory material may be eroded by the molten steel and slag as well as corroded through chemical reactions with the slag and molten steel and the deoxidation products. READ MORE

  6. 4. A study of slag corrosion of oxides and oxide-carbon refractories during steel refining

    Author : Ismail Kasimagwa; Pär Jönsson; Sune Jansson; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; Teknisk materialvetenskap;

    Abstract : The use of ceramic material as refractories in the manufacturing industry is a common practice worldwide. During usage, for example in the production of steel, these materials do experience severe working conditions including high temperatures, low pressures and corrosive environments. READ MORE

  7. 5. The mechanical wear of tuyere refractory and stirring plugs in BOF steelmaking

    Author : Qixing Yang; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Process Metallurgy; Processmetallurgi;

    Abstract : Water modelling investigations of pressure change at tuyere tip or back attack and wear of H3B03 disks, as well as high temperature modelling wear tests of BOF refractory using single- or double-tuyere and Ar or N2 gas, have been carried out to study mechanisms for mechanical wear of the refractory for BOF stirring tuyeres and plugs. A new nominal Mach number, M*', was defined and adopted as the criterion for correlating test data. READ MORE