Evaluation of Magnesite Wastes Using Optical Sorting Machine

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Bilir K., Akdaş H.

XIII. Internetional Mineral Processing Symposium, Muğla, Türkiye, 10 - 12 Ekim 2012, cilt.1, ss.1017-1023

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası: 1
  • Basıldığı Şehir: Muğla
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.1017-1023
  • Eskişehir Osmangazi Üniversitesi Adresli: Evet

Özet

In this pilot-scale research, the possibilities of evaluating magnesite production wastes were investigated by using an optical sorting machine (OSM). For pilot tests, first, waste samples were subjected to magnetic separation and washing process in Magnesit Inc. processing plants. Then, they were classified into two different size fractions (-35 +15 and -15 +8 mm). In pilot-scale tests, the MINEXX mineral sorter has been used. The concentrate containing 1.91 % SiO2, 0.15 %Fe2O3, 0.01 % Al2O3 and 0.81 % CaO was obtained from the magnesite wastes containing 9.94% SiO2, 1.22% Fe2O3, 0.11% Al2O3 and 2.41% CaO in -35+15 size range. Similarly, in the -15+8 mm particle size, a concentrate containing 2.58 % SiO2, 0.19 %Fe2O3, 0.02 % Al2O3 and 1.05 % CaO was obtained from the feed containing 10.57% SiO2, 1.372% Fe2O3, 0.15% Al2O3 and 2.50% CaO. The results of the pilot-scale studies have shown that the waste of magnesite at the -35+8 mm size range could be enriched by using this new optical sorter.