In-situ observation of the behaviour of non-metallic inclusions at different interfaces in the system steel-slag-refractory
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In: IOP Conference Series: Materials Science and Engineering, Vol. 143, No. 1, 2016, p. 012010.
Research output: Contribution to journal › Article › Research › peer-review
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TY - JOUR
T1 - In-situ observation of the behaviour of non-metallic inclusions at different interfaces in the system steel-slag-refractory
AU - Michelic, Susanne
AU - Salgado, U Dieguez
AU - Bernhard, C
PY - 2016
Y1 - 2016
N2 - The system steel-slag-refractory and reactions of non-metallic inclusions at its interfaces are decisive in numerous metallurgical processes. In order to obtain the desired steel cleanness level, a detailed understanding of the occurring interactions is needed. This study focuses on the in-situ observation of different reactions of non-metallic inclusions in steel and slag. For this purpose a Confocal Scanning Laser Microscope attached to a high temperature furnace is applied which enables the visualization of metallurgical phenomena at steelmaking temperatures up to 1700 °C. Two different examples are discussed: First, the agglomeration of different inclusion types in a Ca-treated steel is described and corresponding attraction forces are calculated. Secondly, the dissolution of Al 2 O 3 and MgOAl 2 O 3 in two slags of the system CaO-Al 2 O 3 -MgO-SiO 2 is examined, including the evaluation of the governing dissolution mechanism. Finally, an outlook on further experimental possibilities is given.
AB - The system steel-slag-refractory and reactions of non-metallic inclusions at its interfaces are decisive in numerous metallurgical processes. In order to obtain the desired steel cleanness level, a detailed understanding of the occurring interactions is needed. This study focuses on the in-situ observation of different reactions of non-metallic inclusions in steel and slag. For this purpose a Confocal Scanning Laser Microscope attached to a high temperature furnace is applied which enables the visualization of metallurgical phenomena at steelmaking temperatures up to 1700 °C. Two different examples are discussed: First, the agglomeration of different inclusion types in a Ca-treated steel is described and corresponding attraction forces are calculated. Secondly, the dissolution of Al 2 O 3 and MgOAl 2 O 3 in two slags of the system CaO-Al 2 O 3 -MgO-SiO 2 is examined, including the evaluation of the governing dissolution mechanism. Finally, an outlook on further experimental possibilities is given.
M3 - Article
VL - 143
SP - 012010
JO - IOP Conference Series: Materials Science and Engineering
JF - IOP Conference Series: Materials Science and Engineering
SN - 1757-8981
IS - 1
ER -
