Orway Mineral Consultants Canada Ltd. Mississauga, ON ...
Index (BWi), the Rod Mill Work Index (RWi), the Crusher Work Index (CWi) and the Abrasion Index (Ai). Over the years, it has been determined that Efficiency Factors (EF1 to EF9) should be applied to ... SB, the product size ''P'' is fixed at 110 µm. Kr is the composite of EF factors for rod milling (Rowland, 1982), excluding EF3. K b is the ...