Mar 08 2013 · calculation of ball mill grinding efficiency dear experts please tell me how to calculate the grinding efficiency of a closed ckt open ckt ball mill in literatures it is written that the grinding efficiency of ball mill is very less less than 10 please expalin in a n excel sheet to calcualte the same thanks sidhant reply
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Calcium carbonate is the main raw material to make cement, lime and calcium carbide, and it is an indispensable flux limestone in metallurgical industry.
• Classification system efficiency • Effective mill power draw • Ball mill specific grinding rate • Ball mill grinding efficiency The circuit output is defined as the production rate of fines by the circuit It is calculated from three values 1 The dry ore feed rate to the
a Mill Geometry and Speed – Bond 1954 observed grinding efficiency to be a function of ball mill diameter and established empirical relationships for recommended media size and mill speed that take this factor into account As well mills with different length to diameter ratios for a given power rating will yield different material
A motor with around 1400 Horse Power is calculated needed for the designed task Now we much select a Ball Mill that will draw this power 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
The specific power consumption compared to a ball mill cement grinding is significantly lower and additionally paired with a 30 to 40 per cent increase in output To continue reading this story and get access to all News Articles and Video sections of the website please Register for a subscription to International Cement Review or
Optimization of mill performance by using online ball and pulp measurements Soon after a stop a mill is a dangerous place to enter for the personnel tasked with taking measurements or samples Crash stops are difficult to handle The mill and all feed streams should be stopped simultaneously but often they are stopped around about the same time
mill is the energy consumption The power supplied to the mill is used primarily to lift the load medium and charge Additional power is required to keep the mill rotating 813 Power drawn by ball semiautogenous and autogenous mills A simplified picture of the mill load is shown in Figure 83 Ad this can be used to establish the essential
A numerical dynamicmechanical model of a planetary ballmill is developed to study the dependence of process efficiency on milling parameters like ball size and number jar geometry and velocity
Mills Figure 2 shows a cutaway view of a Babcock and Wilcox MPS Pulverizer RingRoll and BallRace Mills A ball or roller between two races or rings provides the grinding surfaces on which pulverization occurs One or both of the races may rotate against a ball or roll in a RingRoll Mill the rolls may rotate while the ring is stationary
Keywords Ball mills grinding circuit process control I Introduction Grinding in ball mills is an important technological process applied to reduce the size of particles which may have different nature and a wide diversity of physical mechanical and chemical characteristics Typical examples are the various ores minerals limestone etc