随着煤矿机械化程度的提高、开采强度的增大、集中化的加强,粉尘问题日益突出。因此,世界上一些主要产煤国家在防、降尘技术的研究工作中也日益重视和发展物理化学除尘技术,如添加湿润剂除尘、泡沫除尘、超声波除尘、磁化水除尘等物理化学除尘方法。 一、添加湿润剂除尘 目前煤矿普遍采用以水为主的综合防、降尘措施。如煤层注水、喷雾洒水、湿式作业及温式除尘器等。但由于煤、岩粉都有一定程度的疏水性,而水的表面张力又较大,因 With the improvement of mechanization of coal mines, the strength of mining increases and the concentration is intensified. The dust problem is becoming increasingly prominent. Therefore, some major coal-producing countries in the world have also paid increasing attention to the development of physical and chemical dedusting technologies in the research work on anti-dust and dust-reducing technologies, such as adding physical and chemical dedusting methods such as wetting agent dedusting, foam dedusting, ultrasonic dust dedusting, and magnetized water dedusting. First, the addition of humectant dust At present, coal mines generally use water-based integrated anti-dust measures. Such as coal injection, spray watering, wet work and temperature-type precipitator. However, due to coal, rock powder has a certain degree of hydrophobicity, and water surface tension and larger, because