Maghemite - a source of heavy medium for coal washeries

AROL A. İ., Ozbayoglu G., Anaç S., Bulut M.

25th International Mineral Processing Congress 2010, IMPC 2010, Brisbane, Avustralya, 6 - 10 Eylül 2010, cilt.1, ss.571-574 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası: 1
  • Basıldığı Şehir: Brisbane
  • Basıldığı Ülke: Avustralya
  • Sayfa Sayıları: ss.571-574
  • Anahtar Kelimeler: Coal cleaning, Dense medium, Maghemite, Magnetic separation
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

Use of magnetite as heavy medium in coal preparation plants has been increasing steadily in recent years. It might be in short supply in some areas or excessively costly in certain times. In Turkey, the cost of heavy medium magnetite has almost tripled since 2003. As a result, alternative sources of heavy medium material have been evaluated. A maghemite ore from Elbistan-Kahramanmaras was found to be an interesting source. Tests showed that the maghemite ore can be enriched via magnetic separation at 1556 gauss to obtain a heavy medium material with 4.93 g/cm3 density and 97.22 per cent magnetic recovery. Further tests were conducted to determine the optimum fi eld strength for magnetic separation, friability and regeneration recovery.