Experimental study on wettability of coal dust in addition of surfactants

摘要

In Different surfactants in combination with some inorganic salts were used to improve wetting behaviors of coal dust in this paper. It shows that wetting capability of the coal dust could be improved by addition of surfactant. The improvement due to surfactant use is like: JFC>OP>SDBS. In the mean time, the improvement of the inorganic salts is like: Na_2SiO_3>Na_2SO_4>CaCl_2>NaCl. The further investigation demonstrates that the more Na_2SO_4is used, the better wetting of coal dust is bility is.