起泡剂与充气量对浮选气泡粒度影响规律研究

doi:10.11799/ce201503039

煤炭工程 ›› 2015, Vol. 47 ›› Issue (3): 119-121.doi: 10.11799/ce201503039

起泡剂与充气量对浮选气泡粒度影响规律研究

张世杰

中国矿业大学（北京）

收稿日期:2015-01-05 修回日期:2015-01-12 出版日期:2015-03-10 发布日期:2015-03-25
通讯作者: 张世杰 E-mail:zhangshijie_06@163.com

Research on the effect of frother and gas rate on bubble size in flotation

Received:2015-01-05 Revised:2015-01-12 Online:2015-03-10 Published:2015-03-25

摘要/Abstract

摘要： 为定量研究矿物浮选中起泡剂与充气量对气泡粒度的影响规律，建立了基于图像法的气泡粒度测量系统，在XDL-2L浮选机上，研究了仲辛醇、松油醇和MIBC三种起泡剂在不同浓度、不同充气量条件下的气泡粒度。结果表明：随起泡剂浓度增加，气泡粒度逐渐减小，达到临界兼并浓度后，气泡粒度不再变化；三种起泡剂临界浓度分别为仲辛醇0.066mmol/L、松油醇0.113mmol/L、MIBC为 0.181mmol/L。气泡粒度随充气量增加基本呈线性增加，线性斜率受起泡剂浓度影响。气泡Sauter直径相同时，气泡粒度分布并不完全相同，而是受起泡剂种类与浓度、以及充气量的综合影响。

关键词: 浮选, 气泡粒度, 起泡剂, 充气量

Abstract: In order to quantitatively study the effect of frother and gas rate on bubble size in flotation, bubble size measurement system based on Image Analysis Technique was built. And experiment was conducted in flotation machine XDF-2L with three frothers 2-Octyl alcohol，Alpha-Terpineol and MIBC under different frother dosages and gas rates. Results show that the bubble size decreases with increasing frother dosage until the Critical Coalescence Concentration (CCC) is reached. The CCC values of 2-Octyl alcohol, Alpha-Terpineol and MIBC are 0.066mmol/L, 0.113 mmol/L and 0.181mmol/L respectively. The bubble size increases linearly with an increase of gas rate, while the slope depends on frother concentration. The size distributions of bubble clusters which have the same Sauter diameter are a combined effect of the type and concentration of frother and the gas rate.

Key words: flotation, bubble size, frother, gas rate.

中图分类号:

TD943

张世杰，刘文礼，赵树凯，等. 起泡剂与充气量对浮选气泡粒度影响规律研究[J]. 煤炭工程, 2015, 47(3): 119-121.

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起泡剂与充气量对浮选气泡粒度影响规律研究

Research on the effect of frother and gas rate on bubble size in flotation

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