The use of radioactive tracers to measure mixing regime in semi-autogenous grinding mills

L. Vinnett, F. Contreras, A. Lazo, M. Morales, F. Díaz, K. E. Waters

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

© 2017 Elsevier Ltd The radioactive tracer technique was used to evaluate the liquid and solid (fine and coarse) transport in two industrial semi-autogenous grinding (SAG) mills. The residence time distribution (RTD), along with the mean residence times, was obtained. The residence times for the liquid and fine solid were equivalent, approximately 2 min, which implies non-significant segregation in this size class. The residence time for coarse solids was approximately 4 min. The RTD was modelled by N perfectly mixed tanks in series, in which the number of equivalent mixers was approximately 2 for liquid and fine solids and approximately 3 for the coarse solids. The coarse particles required additional time to pass the grate discharge restriction, which also favoured the mixing.
Original languageEnglish
Pages (from-to)41-43
Number of pages3
JournalMinerals Engineering
DOIs
Publication statusPublished - 1 Jan 2018

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