阴离子型湿润剂与硫化矿尘的耦合性实验

Experiment on Coupling of Wet Agents Composed with Anionic Surfactants and Dust of Sulfide Ores

为了研究粉尘与湿润剂的耦合性，采用毛细管正向渗透实验方法，研究了3种阴离子型湿润剂溶液的含量（质量分数）、温度、湿润液添加钠盐等因子对10种硫化矿尘湿润效果的影响．实验结果表明：1）当温度为20℃左右时，对部分硫化矿尘，湿润剂含量越高，湿润效果越差；2）矿尘的氧化性强弱对湿润剂的效果没有明显的影响；3）湿润剂溶液添加钠盐后能提高其湿润硫化矿尘的效果，使湿润剂的成本有所降低；4）溶液的湿润效果与温度有显著关系，温度为20℃左右，湿润剂对有些硫化矿尘不仅没有改善湿润效果，反而起了负作用，温度为20～35℃，湿润效果随温度升高而增大，温度从35℃增加到55℃，湿润效果没有变化，继续增加溶液的温度，湿润效果反而降低．

In order to investigate the coupling of wet agents and dust, the influencing factors of three anionic wet agents including mass concentration, temperature, additive of sodium sulfate in the wet agent solutions on ten dust samples of sulfide ores were studied by the downward capillary seep experiment. The results show that： 1） To some dust of sulfide ores, the lager the mass concentration of wetting agent is, the poorer the wet ability is when the solution temperature is near 20 ℃ ; 2） The oxidation behavior of sulfide ores has little influence on the wet ability of wetting agents; 3） Wet agent solution added sodium sulfate can improve the wet ability of sulfide dust, and the cost of wet agents can be reduced because the sodium sulfate is much cheaper than the surfactants; 4） The wet ability mainly depends on temperature of the solution; it can increase with the increasing of the temperature between 20 ℃ and 35 ℃, little change between 35 ℃ and 55 ℃, and that decrease while more than 55 ℃.