Effect of the grinding behaviour of coal blends on coal utilisation for combustion

F. Rubiera, A. Arenillas, E. Fuente, N. Miles, J. J. Pis

Research output: Journal PublicationConference articlepeer-review

54 Citations (Scopus)


Grinding of a high volatile bituminous coal was performed in three comminution devices: Raymond Mill (RM), Rolls Crusher (RC) and Ball Mill (BM). The pulverised samples were sieved to obtain four particle size fractions, and temperature-programmed combustion (TPC) was used for the evaluation of their combustion behaviour. In addition, three coals of different hardness and rank were mixed in various proportions in order to compare the combustibility characteristics of the binary coal blends with those of the individual coals. The effect of coal blending on grindability was also studied. It was found that grindability was non-additive especially when coals of very different Hardgrove Grindability Index (HGI) were blended. The combustion studies also suggested that there exists an interaction between individual coals when they are burnt as a blend. Copyright (C) 1999 Elsevier Science S.A.

Original languageEnglish
Pages (from-to)351-356
Number of pages6
JournalPowder Technology
Issue number1-3
Publication statusPublished - 1 Nov 1999
Externally publishedYes
EventProceedings of the 1998 9th European Symposium on Communication - Albi, France
Duration: 8 Sept 199810 Sept 1998


  • Coal blends
  • Combustion
  • Comminution
  • Hardgrove Index

ASJC Scopus subject areas

  • Chemical Engineering (all)


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