Study of Coal Water Slurry Particle Size Distribution with Ultrasonic Testing Theory

Coal is a kind of conventional energy resource with the largest reserves and the most widely distributing in the world. The key to reduce coal pollution are the development of clean coal technology and the improvement of the backward coal-burning technology. The coal water slurry (CWS) is produced with the physical method which is simple, low investment, low cost, and that is the first substitute of the oil. The particle size distribution of CWS plays an important role in the quality control of CWS. At present the methods used to detect CWS´ particles size are offline and can not be used to make constant measurement. This article proposes an ultrasonic method with which we can achieve CWS granularity on-line, and continuously control the quality of CWS.