Exercise 1(a) 1) a material consisting originally of 25 mm particle is crushed to an average size of 7 mm and requires 20kj/kg for this size reduction. determine the energy required to crush the material from 25 mm to 3.5 mm. assuming: a) ritttingers law b) kicks law c) bond law 2) a material is crushed in a blake jaw crusher such that the average size of particle is reduced from 50 mm to 10mm.Nov 10, from this curve it is seen that the value of rittinger’s constant, which is proportional to the rate of increase of surface of the powder, varies almost directly with the mill speed. theoretically, the charge would centrifuge at n/nc = 1.0 and, since there can then be no grinding, the curve should theoretically drop to zero along a line coincident with the line n/nc =.
Nov 15, by comparing the von rittinger constant (k) for these three mills (table 1), it is clear than some mills have achieved a greater particle size reduction for a similar specific effective energy consumption. in general, the planetary ball mill showed the highest k values, followed by the ring-roller mill and knife mill. however the results are.Rittinger law of grinding. value of rittingers constant for ball mill rock crushing theory and formula using kick amp rittinger s law diamond 183 small ball mill in 3 to 4 tph gold processing plant 911 in the chemical and process industries grinding is an.
Tables 2 and 3 give the numeric values of constant grinding rate k of the narrow size fractions of quartz and copper ore as well as the specific mill throughput with the ball charge of various sizes. table 1. characteristics of ball charge and sample mass of quartz and copper ore symbol of ball charge ball diameter ball diameter optimal.The constants (kb, kr and kk) used in the laws of crushing (i.e., bond’s law, rittinger’s law and kick’s law) depend upon the_____? a. feed material ... the equivalent diameter of channel of a constant non-circular cross-section of 3 cm by 6 ... power required to drive a ball mill with a particular ball load is proportional to.
The mill consumes a maximum power of 100 w. (do not assume the mill produces 100w of comminution power) in fig. 6 the parts of the mill are described. a b c figure 6: centrifugal ball mill a: milling room with balls b: counterweight to milling room and content c: shaft the mill is able to turn up to 500 rpm and mill 200 ml of.Value of rittingers constant for ball mill 27 sep literature values range from 20 down to less than 01 required to produce this increase in surface area and k is a constant known as rittingers constant rittingers law has been found to hold better for fine grinding in the ball mill both shearing and impact forces are utilized in the.
Need more additional information or queries? We are here to help. Please fill in the form below to get in touch.
If you are interested in our company and products
Welcome to visit the factory!We are waiting for you around the clock!