ball mill power efficiency
What is the effect of low ball % full on grinding efficiency?One of our clients is thinking of the future and has bought a ball mill that will be the right size someday, but is very large nowI know what happens to mill power from adjustments to % critical speed and % balls charge What I don't know
The ball mill's low grinding efficiency, low processing capacity, high production energy consumption, and unstable product fineness are problems that most concentrators will encounter How to effectively improve the grinding efficiency of the ball mill is an important issue This article summarizes 10 ways to improve grinding efficiency
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
The basic parameters used in ball mill design (power calculations), rod mill or any tumbling mill sizing are; material to be ground, characteristics, Bond Work Index, bulk density, specific density, desired mill tonnage capacity DTPH, operating % solids or pulp density, feed size as F80 and maximum ‘chunk size’, product size as P80 and maximum and finally the type of circuit open/closed .
The first two Grinding Efficiency Measurement examples are given to show how to calculate Wio and Wioc for single stage ball mills Figure 1 The first example is a comparison of two parallel mills from a daily operating report Mill size 503m x 61m (165′ x 20′ with a ID of 16′) This example shows that Mill 2 is slightly more efficient than Mill 1 even though it has a higher power .
The object of these tests was to determine the crushing efficiency of the ball-mill when crushing in closed circuit with a classifier The conditions were as follows: Feed rate, variable from 4 to 15 T per hr Ball-mill power, 108 kw Ball load, 28,000 lb of 3- and 2 ,
The following are factors that have been investigated and applied in conventional ball milling in order to maximize grinding efficiency: 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
Overflow Ball Mill: Suitable for almost all applications where a ball mill is required Simple and trouble-free grinding method The discharge trunnion can be furnished with trommel screen Grate Discharge Ball Mill: This type of mill usually works with a high circulating load and thus produces very little extreme fin The specific power .
4 Ball mill rotating speed: when grinding ball adding rate remains constant, the useful power of ball mill varies with the rotating speed, therefore, production efficiency will also be influenced Ball mill rotating speed need to be adjusted according to different types of or If the motor power is large enough, increasing rotating speed .
In order to get the most economical consumption of power, the ball load in a Hardinge Mill should be kept up to the level of the trunnions The capacities, power requirements, etc, of the various sizes of Hardinge Ball Mills are given in Table 12 It should be noted that the two figures describing the size of a mill represent the diameter of .
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