Correlating common breakage modes with impact breakage and ball milling of cement clinker and chromite


CAMALAN M.

INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY, cilt.30, sa.6, ss.901-908, 2020 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 30 Sayı: 6
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1016/j.ijmst.2020.03.017
  • Dergi Adı: INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, CAB Abstracts, Compendex, INSPEC, Metadex, Directory of Open Access Journals
  • Sayfa Sayıları: ss.901-908
  • Anahtar Kelimeler: Progeny distribution, Impact breakage, Ball mill, Self-similarity, Breakage modes, Cone of fines, FRAGMENTATION, PARTICLES, FAILURE, SIZE, MECHANISMS, BEHAVIOR, FRACTURE, SPHERES
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

Understanding the mechanisms of the breakage of ore particles is important to predict the particle size distribution in size reduction operations. This paper aims to show the presence of common breakage modes in impact breakage and ball milling of the cement clinker and chromite samples. For that purpose, narrow size fractions of the two samples were broken in a drop-weight tester or ball mill by changing the degree of applied energy. Then the resultant size distributions were evaluated to seek evidence for the common breakage modes. The results showed that increasing the breakage energy will produce a systematic change in the shapes of the size distributions, suggesting a sequential set of breakage modes. The breakage is initially due to tensile stresses at low breakage energies and compressive stresses at high breakage energies. Further studies should be done to assess if these breakage modes occur at size-reduction of different ores. (C) 2020 Published by Elsevier B.V. on behalf of China University of Mining & Technology.