In this paper, the influence of inclining angle of turbine blades on classi
fication results was studied employing mica as the experimental materials.
Based on the experimental results, the fish-hook effect in air classificati
on appearing in Tromp curve was explained and discussed in term of particle
agglomeration. The results obtained showed that the smaller the inclining
angle of the blades, the smaller the classified particle cut size was, but
the lower the classification precision was. The fish-hook effect decreased
and the classification precision increased with the increase in inclining a
ngle of blades, which may be attributed to decrease in the critical agglome
rated particle size. (C) 1999 Elsevier Science S.A. All rights reserved.