Knowledge Management System Of Institute of process engineering,CAS
| Crystallization behaviors of bayerite from sodium chromate alkali solutions | |
| Alternative Title | Trans. Nonferrous Met. Soc. China |
| Wei, Guang-ye1,2; Qu, Jing-kui1; Zheng, Yu-dong2; Qi, Tao1; Guo, Qiang1; Han, Bing-bing1; Zhao, Hong-xin1 | |
| 2014-10-01 | |
| Source Publication | TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
 |
| ISSN | 1003-6326 |
| Volume | 24Issue:10Pages:3356-3365 |
| Abstract | In order to clean production of chromium compounds, it is a critical process to remove aluminates and utilize aluminum compounds from artificial chromate alkali solutions. The effects of Na2CrO4 on the neutralization curve, Al(OH)(3) precipitation efficiency and induction period of bayerite were investigated. The results indicate that the neutralization curve of the artificial chromate alkali solutions shows three distinct regions and its induction period is longer than that of pure sodium aluminate solutions at the same aluminum concentration. And the decreased temperature and volume fraction of CO2 enhance the particle size of bayerite beta-Al(OH)(3). Bayerite composed of agglomerates of rods and cone frustums was obtained from alkali metal chromate solutions with 28.5% CO2 (volume fraction) at temperatures ranging from 50 degrees C to 70 degrees C. Coarse bayerite with particle size (d(50)) from 24.2 mu m to 29.3 mu m extremely has few impurities, which is suitable for comprehensive utilization.; In order to clean production of chromium compounds, it is a critical process to remove aluminates and utilize aluminum compounds from artificial chromate alkali solutions. The effects of Na2CrO4 on the neutralization curve, Al(OH)(3) precipitation efficiency and induction period of bayerite were investigated. The results indicate that the neutralization curve of the artificial chromate alkali solutions shows three distinct regions and its induction period is longer than that of pure sodium aluminate solutions at the same aluminum concentration. And the decreased temperature and volume fraction of CO2 enhance the particle size of bayerite beta-Al(OH)(3). Bayerite composed of agglomerates of rods and cone frustums was obtained from alkali metal chromate solutions with 28.5% CO2 (volume fraction) at temperatures ranging from 50 degrees C to 70 degrees C. Coarse bayerite with particle size (d(50)) from 24.2 mu m to 29.3 mu m extremely has few impurities, which is suitable for comprehensive utilization. |
| Keyword | Chromate Alkali Solutions Bayerite Carbonization Crystallization Precipitation Efficiency |
| Subtype | Article |
| WOS Headings | Science & Technology ; Technology |
| DOI | 10.1016/S1003-6326(14)63477-4 |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | ALUMINATE SOLUTIONS ; NEUTRALIZATION ; GIBBSITE ; TRIHYDROXIDE ; NUCLEATION ; HYDROXIDE ; LIQUORS ; GROWTH ; OXIDE ; IONS |
| WOS Research Area | Metallurgy & Metallurgical Engineering |
| WOS Subject | Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000345542700037 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/11855 |
| Collection | 研究所（批量导入） |
| Affiliation | 1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China 2.Univ Sci & Technol, Sch Mat Sci & Engn, Beijing 10083, Peoples R China |
| Recommended Citation GB/T 7714 | Wei, Guang-ye,Qu, Jing-kui,Zheng, Yu-dong,et al. Crystallization behaviors of bayerite from sodium chromate alkali solutions[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2014,24(10):3356-3365. |
| APA | Wei, Guang-ye.,Qu, Jing-kui.,Zheng, Yu-dong.,Qi, Tao.,Guo, Qiang.,...&Zhao, Hong-xin.(2014).Crystallization behaviors of bayerite from sodium chromate alkali solutions.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,24(10),3356-3365. |
| MLA | Wei, Guang-ye,et al."Crystallization behaviors of bayerite from sodium chromate alkali solutions".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 24.10(2014):3356-3365. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Crystallization beha（1309KB） | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | Application Full Text | |
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