Precipitation and Growth of V-concentrating Phase in Synthetic V-bearing Steelmaking Slag
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概要
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The precipitation and growth of V-concentrating phase are implemented in the synthetic V-bearing steelmaking slag based on the composition of factory slag from the Masteel Co. X-ray diffraction (XRD) and scanning electron microscopy (SEM), with energy dispersive X-ray spectrometer (EDX) are used to investigate the slag after heat treatment and to determine the temperature at which crystallization of V-concentrating phase is initiated. It is demonstrated Whitlockite with a high content of V2O5 (called V-concentrating phase) nucleates homogeneously and hetergeneously at 1623-1598 K. When emplaced holding time at 1548 K, the crystals of V-concentrating phase grow with increasing of the holding time using crystal size distribution theory (CSD). Observation of the microstructures and crystallite-size data indicates that the precipitation of V-concentrating phase proceeds via three different mechanisms: nucleation, growth, and coalescence of grains of V-concentrating phase.
著者
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Wu Xingrong
Anhui Provincial Key Lab. Of Metallurgical Engineering & Resources Recycling (anhui Univ. Of Tec
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Li Liaosha
Anhui Provincial Key Lab. Of Metallurgical Engineering & Resources Recycling (anhui Univ. Of Tec
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DONG Yuanchi
Anhui Provincial Key laboratory for Metallurgical Engineering & Resources Recycling, Anhui Universit
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DONG Yuanchi
Anhui Provincial Key Laboratory for Metallurgical Engineering & Resources Recycling (Anhui University of Technology)
関連論文
- Influence of Al_2O_3 on Equilibrium Sinter Phase in N_2 Atmosphere
- Influence of P_2O_5 on Crystallization of V-concentrating Phase in V-bearing Steelmaking Slag
- Precipitation and Growth of V-concentrating Phase in Synthetic V-bearing Steelmaking Slag