| Dissolution rate determination of alumina in molten cryolite-based aluminum electrolyte | |
| Alternative Title | Dissolution rate determination of alumina in molten cryolite-based aluminum electrolyte |
| Kan Hongmin; Zhang Ning; Wang Xiaoyang | |
| 2012 | |
| Source Publication | JOURNAL OF CENTRAL SOUTH UNIVERSITY
 |
| ISSN | 2095-2899 |
| Volume | 19Issue:4Pages:897-902 |
| Abstract | 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. |
| Other Abstract | 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. |
| Keyword | SOLUBILITY DESCRIPTOR POWDER aluminum electrolyte dissolution rate image analysis alumina Gabor wavelet transform |
| Indexed By | CSCD |
| Language | 英语 |
| Funding Project | [National Natural Science Foundation of China] ; [Key Laboratory Foundation of Liaoning Province, China] |
| CSCD ID | CSCD:4518501 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/141613 |
| Collection | 中国科学院金属研究所 |
| Affiliation | 中国科学院金属研究所 |
| Recommended Citation 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. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment