Continuous cooling crystallization kinetics of a molten blast furnace slag

AbstractThe chemical structure of mineral wool fiber was investigated by using Fourier Transform Infrared Spectroscopy (FTIR). Next, the glass transition temperature and the crystallization temperature of the fibers were studied. Finally, the crystallization kinetics of fiber was studied. The results show that the chemical bond structure of fibers gets more random with the increase of acidity coefficient. The crystallization phases of the fibers are mainly melilites, and also a few anorthites and diopsides. The growth mechanism of the crystals is three dimensional. The fibers with acidity coefficient of 1.2 exhibit the best thermal stability and is hard to crystallize as it has the maximum aviation energy of crystallization kinetics.

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Nonisothermal Carbothermal Reduction Kinetics of Titanium-Bearing Blast Furnace Slag

JOM ◽

10.1007/s11837-018-2927-8 ◽

2018 ◽

Vol 70 (8) ◽

pp. 1443-1448 ◽

Cited By ~ 8

Author(s):

Mengjun Hu ◽

Ruirui Wei ◽

Meilong Hu ◽

Liangying Wen ◽

Fangqing Ying

Keyword(s):

Blast Furnace ◽

Carbothermal Reduction ◽

Blast Furnace Slag ◽

Reduction Kinetics ◽

Kinetics Of ◽

Furnace Slag

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Precipitation kinetics of anosovite in modified high Ti-bearing blast furnace slag

Metallurgical Research & Technology ◽

10.1051/metal/2015003 ◽

2015 ◽

Vol 112 (1) ◽

pp. 105 ◽

Cited By ~ 9

Author(s):

Shan Ren ◽

Jianliang Zhang ◽

Qingcai Liu ◽

Kejiang Li ◽

Baojun Zhao

Keyword(s):

Blast Furnace ◽

Blast Furnace Slag ◽

Precipitation Kinetics ◽

Kinetics Of ◽

Furnace Slag

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Crystallization Behavior and Growing Process of Rutile Crystals in Ti-Bearing Blast Furnace Slag

High Temperature Materials and Processes ◽

10.1515/htmp-2015-0103 ◽

2016 ◽

Vol 35 (8) ◽

pp. 787-797

Author(s):

Wu Zhang ◽

Li Zhang ◽

Yuhai Li ◽

Xin Li

Keyword(s):

Blast Furnace ◽

Blast Furnace Slag ◽

Crystallization Process ◽

Elevated Temperatures ◽

Avrami Equation ◽

X Ray Diffraction ◽

Experimental Parameters ◽

Kinetics Of ◽

Crystal Seed ◽

Furnace Slag

AbstractThe aim of the present work is to elucidate crystallization and growing process of rutile crystals in Ti-bearing blast furnace slag. The samples were taken from the liquid slag and quenched at once at elevated temperatures in order to analyze phase transaction of titanium and grain size of rutile crystals. Crystallization and growing kinetics of rutile crystals under elevated temperature conditions were calculated, and the crystallization process of rutile crystals under isothermal conditions was expressed by Avrami equation. The effects of experimental parameters, such as experimental temperatures, SiO2 addition, cooling rate, crystal seed addition and oxygen flow, were investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM), the optimal conditions for rutile crystals to grow up were obtained. Distribution and movement state of rutile crystals in the slag were analyzed.

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