1 rittinger’s law n 2 k r is rittinger’s constant 2 kick’s law n 1 k k is kick’s constant 3 bond crushing law n 15 w i is work index in kwhton and d in mm example 4 calculate the power required to crush 50 tonh of coke given the following data w i kwhton feed particle diameter 50 mm product.
Fill in the formA clear definition of the required crushing capacities and the desired product quality can be precisely determined by using the bond index test methods using the bond index test procedures it is possible to calculate crushing abrasion behavior of mineral samples this knowledge is essential to define the required ball mill layout and
According to bond crushing law the work required to form particle of size d from very large feed is where sv p and sv f are surface to volume ratio of the product and feed respectively a sv
Bond crushing law a calls for relatively less energy for the smaller product particles than does the rittinger law b is less realistic in estimating the power requirements of commercial crushers c states that the work required to form particle of any size from very large feed is proportional to the square root of the volume to surface ratio of the
Bonds crushing law and work index epeat steps 2 and 3 heory and analysis the minimum energy required for crushing of the sample is smaller than it onds law is often written in terms of the work index
Chapter 3 particle technology size reduction kick’s law the work required for crushing a given mass of material is constant for the same reduction ratio 322 bond crushing law and work
Crushing ⇒ for spheres the specific surface shape factor is given by adv dv av adv ⇒ for a cyclone of diameter 02 m with a tangential velocity of 15 ms at the wall the separation factor is 460 230 ⇒ wheat is ground into flour in a hammer crusher roller crusher impact mill fluid energy mill ⇒ lengthdiameter ratio of a
Explain the bonds crushing law and work bond crushing law in ball mill applications of bonds law in crushing equipment bonds third equation bond work index formulaequation mineral processing what is the bond work index formula whether a crushing circuit a rod mill or a closed ball mill circuit the work index
Mcqs the work index in bond’s law for crushing of solids has the following dimensions chemical engineering mcqs mechanical operations mcqs for
The bond index there is considerable difference between bond crushing energy and work done by the jaw crusher for rocks it using a forcedisplacement law for each contact1 the rock is modelled as an assembly of stiff particles balls that are bonded together the properties of the bonds between
The work index in bonds law for crushing of solids has the following dimensions a no units dimensionless b kwhton c kwton d kwhm 12
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• based on bonds crushing law the power required to crush a certain material will change by if the diameter of the product is made smaller by 50 • in crushing a certain ore the feed is such 80 is less than 508 mm in size and the product size is such that 80 is less than 635
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