A new apparatus for particle impact tests

Yevgeny Petukhov, Haim Kalman

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

Breakage and chipping of particles due to collision with a hard surface is a common occurrence in many conveying and handling systems, such as pneumatic conveying and jet-mills. Studies of the breakage mechanism of particles due to impact and the effect of impact velocity and the number of impacts have been investigated in depth both experimentally and theoretically. In this paper, a new concept and apparatus are introduced for conducting particle impact tests. In most of the published test rigs, particles were accelerated towards a target. In our apparatus, the target moves and hits the particles. Using the concept, the machine can operate in a vacuum, which will reduce errors caused by air streams and turbulence. The performance of the new apparatus is analyzed and the breakage phenomenon is discussed, to some extent, for two materials. The results are presented in terms of the increase in the weight percentage of the feed broken and the decrease in the weight median size as the impact velocity or number of impacts increases.

Original languageEnglish
Pages (from-to)267-275
Number of pages9
JournalParticle and Particle Systems Characterization
Volume20
Issue number4
DOIs
StatePublished - 1 Sep 2003

Keywords

  • Damage
  • Fatigue
  • Impact tests
  • Particle breakage

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