Investigation of thermal properties of blast furnace slag to improve process energy efficiency

JOURNAL OF CLEANER PRODUCTION

卷:149

Article

Yasipourtehrani, Sara¹  Strezov, Vladimir¹  Bliznyukov, Sergey¹  Evans, Tim¹ 

[1] Macquarie Univ, Fac Sci & Engn, Dept Environm Sci, N Ryde, NSW 2109, Australia

关键词: Blast furnace slag;    Slag viscosity;    Slag heat exchange;    Pig iron heating;    Slag thermal behaviours;    End use product value;    High temperature hot stage SEM;    In-situ SEM heating;   

DOI  :  10.1016/j.jclepro.2017.02.052

来源: Elsevier

【 摘 要 】

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. (C) 2017 Elsevier Ltd. All rights reserved.

【 授权许可】

Free