DONG Wenzhong, GUO Xiaolong, TANG Shengli. TEST STUDY ON ULTRASONIC DETECTION OF MATERIAL LEVEL IN BALL MILLS[J]. Thermal power generation, 2005, (11).
DONG Wenzhong, GUO Xiaolong, TANG Shengli. TEST STUDY ON ULTRASONIC DETECTION OF MATERIAL LEVEL IN BALL MILLS[J]. Thermal power generation, 2005, (11). DOI: 10.19666/j.rlfd.2005.11.017.
has been carried out by using audio and ultrasonic frequency. Results show that the peak amplitude of received signal
signal level
as well as waveform in time domain and amplitude spectrum have very great difference under said two situations. Based on the said difference
judgement of whether coal load exists on the steel plate or not can be made. The ultrasonic attenuation through coal is very great
ultrasonic frequency above 250 kHz is difficult to penetrate through coal layer of 35 mm thickness. This conclusion has certain guiding significance in aspect of applying ultrasonic frequency to detect material level in ball mills.