• 2 crusher 1 sag mill 1 ball mill • stirred mills for regrind • selective two and threestage flotation to produce - zn and pb concentrates • primary grind to 50um secondary to: • 15um for pb • 25um for zn. standard processing and attractive con. 18
2010; 2011). for each grain size there is an optimal ball size (trumic et. al. 2007). the bigger ball in relation to the optimal one will have an excess energy and consequently the smaller ball mill has less energy necessary for grinding. in both cases the specific power consumption increases and the grinding capacity decreases
what it is the optimun speed for a ball mill - posted in pyrotechnics: i have done a ball mill recenly finished but the motor has too rpms is too fast for use in a ball mill (the pvc cylinder that i use left of the shafts). with the motor i will use a 40 mm pulley because i have a 50 mm driven pulley in one of my two shafts.
effects of grinding media shapes on ball mill performance niyoshaka nistlaba stanley lameck a dissertation submitted to the faculty of engineering and the built environment university of the witwatersrand johannesburg in fulfilment of the requirements for the degree of master of science in engineering johannesburg october 2005
the model for optimal charge in the ball mill j. min. met. 43 a (2007) 23 for each narrow size distribution of quartz there exists a ball diameter which gives the highest grinding rate and that is in fact the optimal diameter of ball for the given quartz size. since ball charge of different diameters differ in mass and also
optimum choice of the make-up ball sizes for maximum throughput in tumbling ball mills. author links open overlay panel heechan cho jihoe kwon kihong kim myoungwook mun. show more. the ball size is one of the critical factors for determining the mill performance of ball mills. it is well known that larger balls are needed for the effective