阴离子型湿润剂与硫化矿尘的耦合性实验

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．     

Locating method of fire source for spontaneous combustion of sulfide ores

In order to achieve a more efficient way to accurately detect the position of the fire source of spontaneous combustion underground mine,a simple fire source locating method,based on infrared scanning system which can determine the point where the highest temperature on the surface of igniting ores occurs,was proposed.First,the differential equations that describe heat flow in ore body were presented and the relationship between the surface temperature distribution and the depth and intensity of inner fire ...