- Tytuł:
- Enhanced separation efficiency of low–rank coal using waste engine oil as a flotation collector
- Autorzy:
-
Li, Ming
Xia, Yangchao
Guo, Fangyu
Rong, Guoqiang
Li, Guosheng
Xu, Baolin
Xing, Yaowen
Gui, Xiahui - Powiązania:
- https://bibliotekanauki.pl/articles/109613.pdf
- Data publikacji:
- 2020
- Wydawca:
- Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
- Tematy:
-
low rank coal
engine oil
waste engine oil
flotation - Opis:
- Because of the rich oxygen-containing functional groups and developed pores on the Surface of low-rank coal, it is difficult to realize efficient separation during low-rank coal flotation using common oil collectors. Waste engine oil (WEO) is abundant in polar oxygen-containing functional groups and could be an alternative collector. In this study, the effect of WEO on low-rank coal floatation was assessed and engine oil (EO) was also used for comparison. The results show that the separation efficiency of low-rank coal can be significantly improved using WEO; additionally, 96.73% of the clean coal yield can be obtained when the WEO dosage was only 4 kg/t. Compared with EO, the bubble–particle induction time in the presence of WEO shortened from 430 to 220 ms. Moreover, more low-rank coal particles were captured and adhered to the bubble surface using WEO, which indicated a higher probability of bubble–particle attachment. Nonpolar components, polar components and metal ions synergistically promote the flotation separation enhancement of low-rank coal using WEO.
- Źródło:
-
Physicochemical Problems of Mineral Processing; 2020, 56, 2; 252-263
1643-1049
2084-4735 - Pojawia się w:
- Physicochemical Problems of Mineral Processing
- Dostawca treści:
- Biblioteka Nauki
Artykuł