Optimization of some parameters of stirred mill for ultra-fine grinding of refractory Au/Ag ores


CELEP O., ASLAN N. , ALP İ., Tasdemir G.

POWDER TECHNOLOGY, vol.208, no.1, pp.121-127, 2011 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 208 Issue: 1
  • Publication Date: 2011
  • Doi Number: 10.1016/j.powtec.2010.12.009
  • Title of Journal : POWDER TECHNOLOGY
  • Page Numbers: pp.121-127

Abstract

In this study, optimization of some parameters of stirred mill on ultra-fine grinding of refractory Au/Ag ores was performed. A three-level Box-Behnken design combining a response surface methodology (RSM) with quadratic programming (QP) was employed for modelling and optimization of some operating parameters in ultra-fine grinding. Grinding tests were carried out in a laboratory scale pin-type vertical stirred mill. The relationship between the response, i.e. d(80) size, and four grinding parameters, i.e. ball diameter, grinding time, ball charge ratio and stirrer revolution was presented as empirical model equations. Analysis of variance showed a high coefficient of determination value (R-2=0.9698), thus ensuring a satisfactory of the second-order regression model with the experimental data.