Effect of TiO2 on Thermophysical Properties and Structure of P-Bearing Steelmaking Slags

Wang, Zhanjun1; Zhang, Zuotai2; Zhang, Mei1; Guo, Min1

10.1007/978-3-319-51340-9_40

2017

23671696

8TH INTERNATIONAL SYMPOSIUM ON HIGH-TEMPERATURE METALLURGICAL PROCESSING

411-418

San Diego, CA, United states

GEWERBESTRASSE 11, CHAM, CH-6330, SWITZERLAND

SPRINGER INTERNATIONAL PUBLISHING AG

In this study, the viscous flow and crystallization behavior of CaO-SiO2-MgO-Al2O3-FetO-P2O5-TiO2 steelmaking slags have been investigated over a wide range of temperatures. The results indicated that the viscosity of the slags slightly decreased with increasing TiO2 content. The constructed non-isothermal continuous cooling transformation (CCT) diagrams revealed that the addition of TiO2 lowered the crystallization temperatures. This can mainly be ascribed that the addition of TiO2 promotes the formation of [TiO6]-octahedra units, thereby MgFe2O4-Mg2TiO4 solid solution is formed. Moreover, the decreasing viscosity has a significant effect on the diffusion of ion units, such as Ca2+ and [TiO4]-tetrahedra, from bulk melts to crystal-melt interface. The crystallization of CaTiO3 and CaSiTiO5 was therefore accelerated, which can improve the phosphorus content in P-enriched phase.

TiO2 Viscosity Crystallization Structure

其他

英语

CPCI-S ; EI

Metallurgy & Metallurgical Engineering ; Materials Science

Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing

WOS:000405308900040

20180904845177

Alumina ; Aluminum oxide ; Crystallization ; Magnesia ; Perovskite ; Silica ; Slags ; Steelmaking ; Structure (composition) ; Thermodynamic properties ; Viscosity

Minerals:482.2 ; Steel:545.3 ; Fluid Flow, General:631.1 ; Thermodynamics:641.1 ; Chemical Operations:802.3 ; Inorganic Compounds:804.2 ; Materials Science:951

Web of Science

1.Univ Sci & Technol Beijing, Sch Met & Ecol Engn, Beijing 100083, Peoples R China
2.South Univ Sci & Technol China, Sch Environm Sci & Engn, Shenzhen 518055, Peoples R China

Wang, Zhanjun,Zhang, Zuotai,Zhang, Mei,et al. Effect of TiO2 on Thermophysical Properties and Structure of P-Bearing Steelmaking Slags[C]. GEWERBESTRASSE 11, CHAM, CH-6330, SWITZERLAND:SPRINGER INTERNATIONAL PUBLISHING AG,2017:411-418.