Influence of Gas Microbubbles on the Wettability of Coal Surfaces

被引：1
|
作者：
Patrakov, Yu F. [1 ]
Semenova, S. A. [1 ]
Papina, T. A. [1 ]
机构：
[1] Russian Acad Sci, Siberian Branch, Inst Coal, Fed Res Ctr Coal & Coal Chem, Kemerovo, Russia
来源：
COKE AND CHEMISTRY | 2020年 / 63卷 / 02期
关键词：
coal; flotation; microbubbles; gas-liquid suspension; hydrophobic surfaces; surface wetting; limiting wetting angle; FLOTATION;
D O I：
10.3103/S1068364X20020076
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Using low-ash OS coal as a model, a method is developed for creating a hydrophobic coal surface by means of microbubbles in a gas-liquid suspension. Air microbubbles are generated by decompression. The influence of the pressure in the gas saturation of water on the size and stability of the microbubbles is established. It is shown that, in the presence of microbubbles, a hydrophobic air layer is formed at the coal surface. That provides the basis for the attachment of flotational bubbles.
引用
收藏
页码：63 / 67
页数：5
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