| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Alumina and Bauxite
|
| Presentation Title |
Ionic Effect of NaCl and KCl on the Flotation of Diaspore and Kaolinite using Sodium Oleate as Collector |
| Author(s) |
Chaojun Fang, Shichao Yu, Hong Peng, Xiaowei Deng, Jun Wang |
| On-Site Speaker (Planned) |
Hong Peng |
| Abstract Scope |
The major type of bauxite in China is low-grade diasporic bauxite, which is mainly composed of diaspore and kaolinite. Desiliconization by flotation technology can meet the requirements of Bayer process, but Na+, K+ and Cl- will inevitably appear and affect the flotation of bauxite. The results of flotation show that NaCl and KCl have little effect on the flotation of diaspore, but NaCl have the effect of improving the flotation of kaolinite. It may be attributed to the ion size order Na+<K+<Cl-. Na+ has the ability to enter the gap of kaolinite layered crystal due to its smaller size, which increased the zeta potential and the electrostatic attraction force between kaolinite and oleate, and therefore improving the flotation of kaolinite. In addition, Na+ has salt effect on anionic collector, which also promoted the flotation of kaolinite. This study have reference significance to the industry flotation of diasporic bauxite. |
| Proceedings Inclusion? |
Planned: Light Metals |