摘要
The irregular surface of seeds on which gibbsites are precipitated from caustic aluminate solutions, was investigated according to the fractal theory. Two kinds of fractal dimensions were used to characterize these irregularity. Box-dimension and spectral dimension are based on the SEM images of seeds and diffusive dynamic equation of the precipitation respectively. Both these two dimensions are affected by the reaction temperature, evolved with different reaction conditions and can reflect the influence of irregularity of seeds on the precipitation rate. Box dimension is fit for the characterization of the irregular morphology of seeds, while spectral dimension can explain the fractal dynamic behavior.
The irregular surface of seeds on which gibbsites are precipitated from caustic aluminate solutions, was investigated according to the fractal theory. Two kinds of fractal dimensions were used to characterize these irregularity. Box-dimension and spectral dimension are based on the SEM images of seeds and diffusive dynamic equation of the precipitation respectively. Both these two dimensions are affected by the reaction temperature, evolved with different reaction conditions and can reflect the influence of irregularity of seeds on the precipitation rate. Box dimension is fit for the characterization of the irregular morphology of seeds, while spectral dimension can explain the fractal dynamic behavior.
出处
《中国有色金属学会会刊：英文版》
EI
CSCD
2006年第2期483-487,共5页
Transactions of Nonferrous Metals Society of China
基金
Project(59874031) supported by the National Priority Development Fundamental Research
Project(G19906492-3) supported by China Post-Doctor Program
关键词
铝土矿
分形理论
光谱尺度
腐蚀性铝酸盐溶液
gibbsite
fractal theory
box-dimension
spectral dimension
caustic aluminate solution
fracted dynamic behavior
