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STUDY ON EVALUATION METHOD OF FLOTATION FROTHERS FROTH STABILITY

Xu Zhenhong and Zhu Jianhua(Department of Chemical Engineering, Petroleum University, Beijing 102200)Zhang Rongzeng(Department of Mineral Processing, China University of Mining & Technology, Beijing 100083)   

  • Online:1999-06-25 Published:1999-06-25

浮选起泡剂泡沫稳定性的评价方法研究

徐振洪,朱建华,张荣曾   

  1. 石油大学化工学部,石油大学化工学部,中国矿业大学矿物加工工程系 北京102200,北京102200,北京100083

Abstract: Frother plays an important role in the coal flotation . The frothability of common frothers for coal flotation was measured by using gas pulsation method in this paper. The relationship between froth height and half decaying time was analyzed. A new method for evaluating flotation frothers froth stability has been presented.

摘要: <正>在浮选起泡剂的研究中,充气法是进行起泡剂泡沫性能评价的常用方法之一,该方法是将气体以恒定速度注入溶液而测定泡沫高度(或泡沫体积)及泡沫持续时间。针对这一方法,为了得到最客观和具重现性的结果,在起泡剂泡沫稳定性的评价方面曾提出了各种各样的试验程序。一般为大家熟悉和接受的是Bikerman方法,他将起泡性能作为液体的物理性质,定义了一个所谓的“起泡性能单位”,即∑。Bikerman认为,在一定条件下,如果泡沫体相中气泡的聚并和液体的体积可以忽略,则∑就等于气泡寿命,但这里的假设通常是不实际的,尤其是在湿泡沫的情况。正如Malysa指出,对这样的体系,泡沫柱中液体的含量

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