On the other hand, for SAG mills with grate discharge, the charge level is a bit more variable, so you do sometimes see higher SAG mill power or mill load levels at higher circulating loads. This why the cyclone feed pump or cyclone cluster is often the bottleneck in capacity-constrained ball mill circuits, but mill load or power draw is often the bottleneck in capacity-constrained SAG mill .

The ball mill motor power requirement calculated above as 1400 HP is the power that must be applied at the mill drive in order to grind the tonnage of feed from one size distribution. The following shows how the size or select the matching mill required to draw this power is

power draw of an AG/SAG mill to drop can be gauged by switching the discharge mechanism choice in the model from grate to overflow when predicting the power draw of an AG/SAG mill. smctesting 4

OPTIMUM GRINDING CONDITIONS FROM PILOT PLANT RESULTS A further explanation is required to explain the importance of designing the SAG mill chamber to draw required power at optimum operating conditions of 75% critical speed and less than 30%

power draw. The most frequently used power-based methodologies for calculating energy requirements for comminution circuits using AG/SAG mills are concisely presented in the following section. This paper .

MILL POWER DRAW AND THROUGHPUT CAPACITY : Circuit ton/hr Ore Hardness Grinding Task Specification SAG and Ball"s Grinding Circuit Throughput Forecasting Mill Specification Grinding Task Mill Speed Charge GRINDING CIRCUIT CAPACITY : Mill Throughput Capacity Grinding Circuit Capacity : Assumed from Bailey et al, 2009 SAGDesign Mill Throughput Calculation Using S d-BWI when T80

SAG product will draw more power from the SAG Mill and less power from the Ball Mill. Power Calculation Formula Of Sag Mill – Grinding Mill calculates the grinding charge of a ball mill . how to calculate sag mill ball charge formula to calculate ball mill volume loading » Learn More

Ball Mill Power Calculations - Mineral Processing Extractive . Aug 23, 2015 . A nice and pretty online Ball Mill Power-draw Calculator was put live by one of the great prophets of grinding.

stage ball mills, rod mills or AG/SAG mills when calculating power according to the Bond Third Theory method. Rod mill and AG/SAG mill products are similar and tend to be not as steep as a 0.5 slope when plotted on log-log paper. This is because the particle size distribution (PSD), these mills produce have a coarse fraction but also a ﬁ ne fraction which is not credited for in an 80 per .