roasting vs ultrafine grinding of pyrite

  • Effect of Wet Versus Dry Grinding on Rejection of Pyrite ...

    with coal feeds obtained by either dry grinding or wet grinding. 1-1 Therefore, the effect of different grinding methods on the separation of coal from pyrite from other ash forming minerals is not clear from these studies. Miller and Guzzo~ have compared the effect of dry and wet grinding methods for deep cleaning ultrafine coal by flotation.