Dissolution rate determination of alumina in molten cryolite-based aluminum electrolyte

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	Dissolution rate determination of alumina in molten cryolite-based aluminum electrolyte
其他题名	Dissolution rate determination of alumina in molten cryolite-based aluminum electrolyte
	Kan Hongmin; Zhang Ning; Wang Xiaoyang
	2012
发表期刊	JOURNAL OF CENTRAL SOUTH UNIVERSITY
ISSN	2095-2899
卷号	19 期号:4 页码:897-902
摘要	Determination of dissolution rate of alumina is one of the classical problems in aluminum electrolysis. A novel method which can measure the dissolution rate of alumina was presented. Effect of factors on dissolution rate of alumina was studied intuitively and roundly using transparent quartz electrobath and image analysis techniques. Images about dissolution process of alumina were taken at an interval of fixed time from transparent quartz electrobath of double rooms. Gabor wavelet transforms were used for extracting and describing the texture features of each image. After subsampling several times, the dissolution rate of alumina was computed using these texture features in local neighborhood of samples. Regression equation of the dissolution rate of alumina was obtained using these dissolution rates. Experiments show that the regression equation of the dissolution rate of alumina is y=-0.000 5x (3)+0.024 0x (2)-0.287 3x+ 1.276 7 for Na3AlF6-AlF3-Al2O3-CaF2-LiF-MgF2 system at 920 A degrees C.
其他摘要	Determination of dissolution rate of alumina is one of the classical problems in aluminum electrolysis.A novel method which can measure the dissolution rate of alumina was presented.Effect of factors on dissolution rate of alumina was studied intuitively and roundly using transparent quartz electrobath and image analysis techniques.Images about dissolution process of alumina were taken at an interval of fixed time from transparent quartz electrobath of double rooms.Gabor wavelet transforms were used for extracting and describing the texture features of each image.After subsampling several times,the dissolution rate of alumina was computed using these texture features in local neighborhood of samples.Regression equation of the dissolution rate of alumina was obtained using these dissolution rates.Experiments show that the regression equation of the dissolution rate of alumina is y=-0.000 5x3+0.024 0x2-0.287 3x+ 1.276 7 for Na3AlF6-AlF3-Al2O3-CaF2-LiF-MgF2 system at 920 °C.
关键词	SOLUBILITY DESCRIPTOR POWDER aluminum electrolyte dissolution rate image analysis alumina Gabor wavelet transform
收录类别	CSCD
语种	英语
资助项目	[National Natural Science Foundation of China] ; [Key Laboratory Foundation of Liaoning Province, China]
CSCD记录号	CSCD:4518501
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/141613
专题	中国科学院金属研究所
作者单位	中国科学院金属研究所
推荐引用方式 GB/T 7714	Kan Hongmin,Zhang Ning,Wang Xiaoyang. Dissolution rate determination of alumina in molten cryolite-based aluminum electrolyte[J]. JOURNAL OF CENTRAL SOUTH UNIVERSITY,2012,19(4):897-902.
APA	Kan Hongmin,Zhang Ning,&Wang Xiaoyang.(2012).Dissolution rate determination of alumina in molten cryolite-based aluminum electrolyte.JOURNAL OF CENTRAL SOUTH UNIVERSITY,19(4),897-902.
MLA	Kan Hongmin,et al."Dissolution rate determination of alumina in molten cryolite-based aluminum electrolyte".JOURNAL OF CENTRAL SOUTH UNIVERSITY 19.4(2012):897-902.