Robust estimation of particle velocity profiles in high concentration magnetite suspensions
2013 (English)In: Proceedings of the 2013 International Congress on Ultrasonics / [ed] Gan Woon Siong; Lim Siak Piang; Khoo Boo Cheong, Singapore: Research Publishing Services, 2013Conference paper (Refereed)
In the mining industry magnetite particles are transported in aqueous suspension through different stages of the process. In some stages it is of interest to monitor both the concentration and particle velocity profiles over a cross-section of the flow. In this paper an ultrasonic flow meter method based on cross-correlation of backscattered sound is presented. High solid particle content (e.g. 20-40 wt%) makes this challenging and therefore the emphasis lies on developing robust signal processing techniques for particle velocity estimation. The developed method is evaluated in laboratory experiments on flows in a rectangular duct. Transducers with centre frequency 1, 2, 4 and 5 MHz are evaluated in flows with a solid content of 20% by weight (4.7 vol% solids). Using the 2 MHz transducer a penetration depth of 50 mm is reached.
Place, publisher, year, edition, pages
Singapore: Research Publishing Services, 2013.
Research subject Mineral Processing; Signal Processing; Industrial Electronics
IdentifiersURN: urn:nbn:se:ltu:diva-40122DOI: 10.3850/978-981-07-5938-4_P0150Local ID: f1d612b9-9724-4ca9-b1f5-291bbf6d020cISBN: 978-981-07-5938-4 (PDF)OAI: oai:DiVA.org:ltu-40122DiVA: diva2:1013645
International Congress on Ultrasonics : 02/05/2013 - 05/05/2013
ProjectsWet LlMS - Measurements and models
Godkänd; 2013; 20130517 (janste)2016-10-032016-10-03Bibliographically approved