Emerging Technologies for Measuring Flow Rate and Density of Bulk Flows of Particulate Solids
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The operating principles and characteristics of three devices for measuring or monitoring flows of bulk solids are outlined. These are a flowrate meter and a density meter for material in gravity flow, both based on load cell sensors, and a system, based on audio-frequency acoustic sensing, for measuring the flow rate of dilute flows in a pneumatic conveying pipeline. Common features are mechanical simplicity and robustness, ease of calibration, and high precision. These technologies have all been demonstrated under industrial conditions performing reliably and consistently, and are compatible with the wide ranging process requirements of different industrial sectors, including the minerals industry.
KeywordsBulk solids Flow rate Bulk density Measurement Pneumatic conveying
The developments reported here were carried out over several years with many contributors. Special thanks are to Nicola Brown, Kristina Fenton, John Grey, Bob Lankshear and Stephen Tallon. Much of the development of the acoustic flow meter was supported by funding from Foundation for Research Science and Technology, Wellington, New Zealand. The author thanks the Organizing Committee of MPT 2016 for support and encouragement and for the opportunity to contribute this paper to the A K Biswas Memorial Volume.
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