D. Espig et V. Reinsch, COMPUTER-AIDED GRINDING CIRCUIT OPTIMIZATION UTILIZING A NEW MILL EFFICIENCY CURVE, International journal of mineral processing, 44-5, 1996, pp. 249-259
Citations number
13
Categorie Soggetti
Mineralogy,"Mining & Mineral Processing","Engineering, Chemical
Grinding circuit optimisation is a complex problem requiring suitable
decision aids. Both the need to reduce experimental costs and the impr
oving reliability of mathematical modelling are leading to a growing a
cceptance of computer simulation methods by engineers in mill design a
nd grinding practice. Using a minimum parameter grinding model for tum
bling mills, the authors have developed the ''reference state method''
for the calculation of grinding systems. The method enables predictio
n of system behaviour when changes occur in the most important variabl
es and parameters. A new ''mill efficiency curve'' analogous to the no
rmalised grade-efficiency curve for describing classifier behaviour, i
s suggested. It describes a unique size-dependent mass flow through th
e mill to obtain a certain fineness condition. The curve is relatively
invariant over a reasonable range of conditions. It is excellently su
ited for objective evaluation and simulation. The wide application ran
ge of the method is illustrated by typical examples, showing the advan
tages both of the method and of the corresponding complex software sol
ution ''CGC - Calculation of Grinding Circuits''.