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

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

POWDER TECHNOLOGY, cilt.208, sa.1, ss.121-127, 2011 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 208 Sayı: 1
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1016/j.powtec.2010.12.009
  • Dergi Adı: POWDER TECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.121-127
  • Karadeniz Teknik Üniversitesi Adresli: Evet

Özet

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.