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Effect of TiO 2 and FeO on the Viscosity and Structure of Blast Furnace Primary Slags
Author(s) -
Jiao Ke Xin,
Zhang Jian Liang,
Wang Zhi Yu,
Chen Chun Lin,
Liu Yan Xiang
Publication year - 2017
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.201600296
Subject(s) - slag (welding) , raman spectroscopy , viscosity , materials science , fourier transform infrared spectroscopy , silicate , blast furnace , ground granulated blast furnace slag , analytical chemistry (journal) , spectroscopy , metallurgy , chemical engineering , chemistry , composite material , physics , chromatography , quantum mechanics , cement , optics , engineering
The effects of TiO 2 and FeO on the viscosities of CaO–MgO–Al 2 O 3 –SiO 2 –TiO 2 ‐FeO slag are investigated by the rotating cylinder method. The structural characterization of the quenched samples are also studied by Fourier transform infra‐red and Raman spectroscopy. Experimental results show that viscosity decreases with increasing TiO 2 or FeO, while keeping the basicity and contents of other components constant. Both, Fourier transform infra‐red and Raman spectroscopy results show that there are no significant change of the asymmetric stretching vibration bands for [AlO 4 ] tetrahedra among the slags and there is no Q 3 in the slags. It is concluded that both TiO 2 and FeO in the slags behave as basic oxides, which break the silicate network in the slag and reduce the slag viscosity. The Raman spectroscopy results show that the Q 2 in slag increases with increasing FeO and decreasing TiO 2 . The polymerization degree of silicates decreases with decreasing Ti–O–Si or Ti–O–Ti stretch vibration and increasing O–Ti–O or O–(Si, Ti)–O stretch vibration, which make the slag viscosity decrease.