|
| Study on Sedimentation Performance of Different Flocculants in Sub-molten Salt System |
|
Received:February 29, 2012
Revised:March 01, 2012
Accepted:March 02, 2012
Published Online:August 20, 2012
|
| View Full Text View/Add Comment Download reader |
| DOI：doi：10.3969/j.issn.1007-7545.2012.09.006 |
| KeyWord:flocculants; sub-molten salt; red mud; sedimentation performance; Bayer process |
| Author | Institution |
| gongyanbing |
中国科学院过程工程研究所 北京 |
| mashuhua |
中国科学院过程工程研究所 北京 |
| zhengshili |
中国科学院过程工程研究所 北京 |
| lilin |
中煤金海洋北京化工技术研究院有限公司 北京 |
| dongzhenxin |
中煤金海洋北京化工技术研究院有限公司 北京 |
| liujia |
中煤金海洋北京化工技术研究院有限公司 北京 |
|
| Hits: 2876 |
| Download times: 2412 |
| Abstract: |
| Sedimentation performance of the slurry obtained from the treatment of Bayer red mud through sub-molten salt process was studied by means of cylinder measuring. Sedimentation velocity of slurry, clarity of solution and boundary surface were selected as parameters to evaluate the sedimentation performance with adding of a series of organic polymer flocculants including Nalco-9779, BASF-HP20, Lcb8, L1bb and 90HS, etc. The results show that Nalco-9779 is the optimum one. In addition, the effects of sedimentation time, temperature, dosage of flocculants and concentration of alkaline medium on the sedimentation performance of Nalco-9779 were investigated in detail. The optimum process conditions for slurry treatment mentioned above with use of the flocculants of Nalco-9779 including time of 10 min, temperature of 100 ℃, Na2O concentration of less than 540g/L() and flocculants dosage of 160 g per ton red mud. |
| Close |
|
|
|