| 纳米泡提高细粒煤浮选效果的研究 |
| |
| 引用本文： | 陶有俊,刘谦,Daniel TAO,陶秀祥.纳米泡提高细粒煤浮选效果的研究[J].中国矿业大学学报,2009,38(6). |
| |
| 作者姓名： | 陶有俊 刘谦 Daniel TAO 陶秀祥 |
| |
| 作者单位： | 1. 中国矿业大学化工学院,江苏徐州,221116
2. 中国矿业大学化工学院,江苏徐州,221116;Department of Mining Engineering,University of Kentucky,Lexington,KY 40506,USA |
| |
| 基金项目： | 国家高技术研究发展计划(863计划)，煤炭加工与高效洁净利用教育部重点实验室开放基金 |
| |
| 摘 要： | 泡沫浮选槽中微细粒级低效浮选的原因是颗粒与气泡的碰撞概率低,而粗颗粒浮选回收差的原因是大量颗粒从气泡上脱落,采用文丘里管产生纳米泡,研究了利用纳米泡提高细粒煤浮选效果的机理,结果表明:纳米泡浮选过程中,纳米泡会优先聚集在疏水性颗粒表面,通过调整给料速度、捕收剂添加量等浮选条件,可燃体回收率提高10%～30%,纳米泡起到了辅助捕收的作用,并可以减少药剂用量1/3～1/2.
|
| 关 键 词： | 碰撞 脱落 细粒煤 泡沫浮选 纳米泡 |
Enhancing Efficiency of Fine Coal Flotation by Picobubbles |
| |
| TAO You-jun,LIU Qian,Daniel TAO,TAO Xiu-xiang.Enhancing Efficiency of Fine Coal Flotation by Picobubbles[J].Journal of China University of Mining & Technology,2009,38(6). |
| |
| Authors: | TAO You-jun LIU Qian Daniel TAO TAO Xiu-xiang |
| |
| Abstract: | In the froth flotation cell, a low bubble-particle collision probability resulted in a low flotation recovery of the finest size coal, while a high detachment probability resulted in poor coarse coal flotation recovery. The Venturi tube was used to produce picobubbles, the funda-mental mechanism which picobubbles improve the flotation recovery of particles was discussed. The results show that the picobubbles adhere preferentially to the hydrophobic surface of parti-cle, the fine coal recovery can be increased by 10%-30% by adjusting the parameters inclu-ding feed rate, collector dosage, etc. Picobubbles also acted as a secondary collector and re-duced the collector dosage by one third to one half. |
| |
| Keywords: | collision detachment fine coal froth flotation picobubble |
| 本文献已被 万方数据 等数据库收录！ |
|
