ABSTRACT At the regrind or secondary grinding stages of base metal ores, the concern about energy efficiency is usually extremely important. In general, the specific energy consumption at this stage is higher than during the primary grinding stages. In addition, a tendency of finer grinding has bee...

21-Jul-2015

International Journal of Mineral Processing 2004 Despite reservations of a number of researchers concerning the applicability of Bond's equation for relating specific energy to the size reduction of rocks, his approach has become an industry standard. Data from a large number of pilot and full-s...

29-Mar-2005

XXII International Mineral Processing Congress, Cape Town, South Africa The introduction and subsequent ascendancy of autogenous and semi-autogenous milling for comminution circuits has undoubtedly lead to many economic advantages. From a process viewpoint, however, at least one downside has been...

23-Aug-2003

Comminution 1998 This paper presents observations made during the conduct and analysis of eleven separate autogenous and semi-autogenous pilot plant trials. These trials were conducted using different ores for various projects over the past five years. The ores tested include relatively competent...

22-Nov-1998