TY - JOUR
T1 - Investigation of thermal properties of blast furnace slag to improve process energy efficiency
AU - Yasipourtehrani, Sara
AU - Strezov, Vladimir
AU - Bliznyukov, Sergey
AU - Evans, Tim
PY - 2017/4/15
Y1 - 2017/4/15
N2 - Blast furnace slag (BFS) is the main by-product of iron making and is produced in large amounts worldwide. To improve energy use, it is necessary to understand the thermal behaviour of slags under differing compositions at varying temperatures. This study determines the thermal properties and behaviour of selected slag samples using several experimental techniques, including high temperature Hot Stage Scanning Electron Microscopy (HS-SEM), and Computer Aided Thermal Analysis (CATA). Further methods, such as Energy Dispersive Spectroscopy (EDS) and Fourier Transfer Infrared Spectroscopy (FTIR) were applied to determine the chemical content and nature of the studied BFS samples. Comparing the chemical composition of the slags and their thermal behaviour, the effect of magnesium oxide and aluminium oxide was evident on the crystallisation and fluidity of the molten slag. Additionally, the content of silicon dioxide had an effect on the crystallisation temperature and network strength.
AB - Blast furnace slag (BFS) is the main by-product of iron making and is produced in large amounts worldwide. To improve energy use, it is necessary to understand the thermal behaviour of slags under differing compositions at varying temperatures. This study determines the thermal properties and behaviour of selected slag samples using several experimental techniques, including high temperature Hot Stage Scanning Electron Microscopy (HS-SEM), and Computer Aided Thermal Analysis (CATA). Further methods, such as Energy Dispersive Spectroscopy (EDS) and Fourier Transfer Infrared Spectroscopy (FTIR) were applied to determine the chemical content and nature of the studied BFS samples. Comparing the chemical composition of the slags and their thermal behaviour, the effect of magnesium oxide and aluminium oxide was evident on the crystallisation and fluidity of the molten slag. Additionally, the content of silicon dioxide had an effect on the crystallisation temperature and network strength.
KW - Blast furnace slag
KW - Slag viscosity
KW - Slag heat exchange
KW - Pig iron heating
KW - Slag thermal behaviours
KW - End use product value
KW - High temperature hot stage SEM
KW - In-situ SEM heating
UR - http://www.scopus.com/inward/record.url?scp=85015757472&partnerID=8YFLogxK
UR - http://purl.org/au-research/grants/arc/LP140100182
U2 - 10.1016/j.jclepro.2017.02.052
DO - 10.1016/j.jclepro.2017.02.052
M3 - Article
AN - SCOPUS:85015757472
SN - 0959-6526
VL - 149
SP - 137
EP - 145
JO - Journal of Cleaner Production
JF - Journal of Cleaner Production
ER -