TEST STUDY ON ULTRASONIC DETECTION OF MATERIAL LEVEL IN BALL MILLS

DONG Wenzhong; GUO Xiaolong; TANG Shengli

doi:10.19666/j.rlfd.2005.11.017

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TEST STUDY ON ULTRASONIC DETECTION OF MATERIAL LEVEL IN BALL MILLS

Thermal Power Generation Issue 11, (2005)

更新时间：2025-09-28

- TEST STUDY ON ULTRASONIC DETECTION OF MATERIAL LEVEL IN BALL MILLS
- 作者机构：
  
  1. 重庆大学
  2. 重庆大学,重庆,400044
  3. ,重庆,400044
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.2005.11.017
  CLC： TH816
- Published：2005
- 稿件说明：
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DONG Wenzhong, GUO Xiaolong, TANG Shengli. TEST STUDY ON ULTRASONIC DETECTION OF MATERIAL LEVEL IN BALL MILLS[J]. Thermal Power Generation, 2005, (11).
DOI：

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.

摘要

应用声超声及超声穿透试验对钢板上有无煤负载两种情况进行了对比研究。结果表明:两种情况下

接收信号的峰幅、信号水平以及时域波形和幅值谱差异很大

根据这一差异可判断出钢板上是否有煤负载;煤对超声衰减很大

250kHz以上频率的超声难以穿透35mm厚度的煤层。该结论对超声在球磨机料位检测方面的应用具有一定的指导意义。

Abstract

A comparison study on two situations

with and without coal load on a steel plate

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.

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