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Three laws of comminution or size reduction such as Kick's law, Rittinger's law and Bond's law are defined and its objectives in industrial. MILLING & ANALYSIS OF PARTICLES. In the 50s Bond came up with an empirical relation covering the range between Rit- tinger and Kick's law, correlating the mass specific comminution work WM,K

Rittinger's theory and law of the energy expended in crushing of rock is that the work of crushing is proportional to the reduction in diameter; or, as I have more fully expressed it: "The work done in crushing is proportional to the surface exposed by the operation; or, better expressed for this purpose, the work done on a given mass of rock is proportional to the reciprocal of the ...

Which of the following crushing laws is most accurately applicable to the fine grinding of materials ? A. Bond's crushing law. B. Kick's law. C. Rittinger's law. D.

Kick's Law states that the energy required to crush any given quantity of material to specific fractions is the same regardless of the initial size and applies to crushing solids. Rittinger's Law states that the energy required to reduce particle size relates directly to …

RITTINGER LAW SPECIFIC GRINDING . equation 11.2 is a statement of kick''s law.it implies that the specific energy required to crush a material,grinding,cutting,rittinger''s law, Inquire Now; rittinger law specific grinding hotelsignature.co.in

15.1 Rittinger's law ... Rittinger's law has been found to hold better for fine grinding, where a large increase in surface results. It suggests that the energy required is proportional to the increase in surface area per unit mass. ... The Bond Work Index is material specific and is obtained from laboratory crushing tests on the feed material.

Confusion concerning the so-called general law of grinding proposed by Walker et al. is removed when it is realised that two forms of the law exist, quite different in physical meaning. The Kick and Rittinger laws are special cases of one form, and Bonds law is a special case of the other. Thus it is possible for Rittinger's and Bond's laws to ...

Cement fineness is often broadly characterized by the Blaine specific surface area and the quantity retained on specific sieves (typically the 45um sieve). ... Rittinger's Law was found to be ...

Equation (11.3) is known as Rittinger's Law. As the specific surface of a particle, the surface area per unit mass, is proportional to 1/L, eqn. (11.3) postulates that the energy required to reduce L for a mass of particles from 10 cm to 5 cm would be the same as that required to reduce, for example, the same mass of 5 mm particles down to 4.7 ...

Rittinger's law states that the energy required for ... Models for specific grinding force vs. the specific material removal rate and G-ratio vs. grinding wheel surface speed were developed based ...

Rittinger's law • Rittinger's Law says that the specific energy (E) of grinding is directly proportional to the new surface area produced. • The energy surface area balance of Rittinger's law in terms of particle sizes is: (3.4) Where: • is the fraction by weight less than size X of products of fracture

The reference mix made without GA is also shown. At relatively low Ec values varying from 5 to around 20 kWh/ton, all tendency curves are shown to follow Rittinger's law where an approximate linear correlation exits between the evolution of specific surface area and grinding energy.

Rittinger Law Specific Crusher. rittinger law of grinding rittinger law of grinding size reductionlaws involved in size reduction Oct 25 2016 Rittingers law gives better results with fine grinding where there is a much larger increase in surface area Bonds law is intermediate between these two A crushing law proposed by Rittinger .

Parboiled rice required longer duration of grinding compared to raw rice, consequently specific energy consumption was higher (~220kJ/kg). All the three classical laws of grinding (Kick's, Rittinger's and Bond's) seemed to be applicable while Rittinger's law showed better suitability than the other two followed by Bond's law.

Rittinger's Law (1867) Rittinger considered that for the grinding of solids, the energy required should be proportional to the new surface produced and put n = 2 Therefore dE/dx = - K/x² Integrating ∫ dE = - K ∫ 1/x². dx E = K [1/x 2 – 1/x 1]

However,equations Rittinger's law and Bond's law were developed from studies of hard materials (coal and limestone) and deviation from predicted results is likely with many foods. 15. Basic parts of mill • Feed chute/hopper, which delivers the material. • Grinding mechanism usually consisting of a rotor and stator.

The lab-scale disc mill and the application of Von Rittinger's comminution law provide a quick assessment of the relative grindability (i.e., the ease of grinding) of wood pellets. Further grinding studies should focus on the grinding behavior of pellets made of …

Rittinger assumed that the energy required for size reduction is directly proportional to the change in surface area, and not to the change in length. He considered that for the grinding of solids, the energy required should be proportional to the new surface produced, assigning the value of 2 to the power n, and obtaining the Rittinger's law ...

Laws Of Crushing And Grinding-Crusher. The law specifically grinding rittinger grinding and crushing laws rittinger law of grindingriver aggregates jaw crusher bond s law for crushing mills ebrainzorgin bond039s law for crushing units such as crushers and grinding mills is ore s work index more details rittinger law specific.

grinding The Third Law states that the net energy required in comminution is propor tional to crushing and grinding and F80 and P80 are the 80 passing Get price Mill grinding Wikipedia A mill is a device that breaks solid materials into smaller pieces by grinding crushing or cutting 1 Grinding laws 2 Grinding machines 21 .

GRINDING LAWS The three laws of Rittinger, Kick and Bond can all be derived from the follow- ing relationship, proposed by Charles (1957), between energy consumed and mate- rial size C.51 : &=-kg Yn Setting the exponent n to 1, 11 or 2 upon integration defines the …

During the grinding process, the increase in the specific surface proportionally decreases with the fineness increase. Rittinger's law demonstrated that there is a direct proportionality within the grinding time and specific surface till a precise fineness (depending on the material and the grinding system).

Specific grinding energy (J/g) was correlated with size parameters of three popular industrial equations: Kick, Rittinger, and Bond. All three equations fitted to the experimental data linearly but the best fitted lines did not go through the origin, i.e. the fitted lines had a slope and intercept.

rittinger law specific grinding rhconstruction1. rittinger law specific grinding sethhukamchand. . rittinger law specific grinding Grinding Mill . the production of fresh surface during the grinding, microns Also, a certain amount of very fine material is lost during the grinding and sieving operations, and this. Get Price

range. This study illustrated that Kicks law was applicable in the crushing range (above 1 cm in diameter) . Bond's theory was more suited to the particle size ranges involved in conventional ball and rod mill grinding (5 to 250 mm). Rittinger's law showed more _app1icability to the fine

grinding in which there is a relatively small increase in surface area per unit mass. Rittinger's law gives better results with fine grinding where there is a much larger increase in surface area and Bond's law is intermediate between these two. However, equations (4.2) and (4.3) were developed from studies of hard materials (coal and ...

Specific energy vs. Rittinger's gr inding law parameter for the data from this study, and th ose extracted from Mani et al. (2 004), Bi tra et al. (2009), and Adapa et al. ( 2011). Figure 8.

What would be the net energy consumption for grinding the crystals to 50m powder:a.according to Rittinger's lawb.according to Kick's law. a.Rittinger's law:E=K(1x2-1x1)K is calculated from the first milling data and applied to the second milling:K = 0.5/(1/1001/500) = 62.5kwh.m/tonE = 62.5 (1/501/500) = 1.125kwh/tonb.Kick's law:E=Klog(x1/x2)K ...

K=KRfc and so dE/dL = KRfcL-2 where KR is called Rittinger's constant, and integrate the resulting form of eqn. (3.1), we obtain: E = KRfc(1/L2 – 1/L1) (3.3) ENERGY USED IN GRINDING- RITTINGER'S LAW As the specific surface of a particle, the surface area per unit mass, is proportional to 1/L. Eqn. (3.3) postulates that the energy required ...

The equation for Rittinger's Law can be written as: E = K R f c (1/L 2 – 1/L 1) Where: E=Energy, K R =Rittinger's Constant, f c =crushing strength of the material, L 1 =initial length, and L 2 =reduced length. Kick's Law states that the energy is proportional to the size reduction ratio.

(a) Rittinger's energy law postulated that the energyexpended in crushing is proportional to the area of new surface created. Derivean expression relating the specific energy consumption in reducing the size ofparticles from x1 to x2 according to this law.

It appears fairly safe to say, however, that coarse grinding will approximate more closely to Kick's law and fine grinding more nearly to Rittinger's law. The extent to which the design of a mill, and the physical dimensions of the crushing elements influence the crushing characteristics of a given material is uncertain.

Value Of Rittingers Constant For Ball Mill. 27 sep 2012 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 size