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rittinger law specific grinding

Figure 3 plots specific energy input to the grinder vs. the inverse of geometric mean particle size (L P −1). The line fitted to the data represents the Rittinger equation, Eq. . The slope of the line is the Rittinger constant k R with intercept C R. Specific energy data labeled with pine wood chips represents the wood chips as received...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.

Rittinger's Law states that the energy required in size reduction is proportional to the new surface created by the particle fragmentation. The equation for Rittinger's Law can be written as: E = K R f c (1/L 2 – 1/L 1) Where: …...Rittinger Law Specific Grinding. Rittinger law specific wet ball mill. rittinger law specific grindingHard Pressed Caf . laws grinding classical . rittinger law specific grinding Mill (grinding) Wikipedia the free encyclopedia A grinding mill is a unit operation designed to break a solid material into smaller piec Free Quote rittinger law ...

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 …...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 ...

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...Sn = final specific surface area Application: It is most applicable in size reducing brittle ... This theory is used when neither Kick's nor Rittinger's law is applicable. n =2.0 Walker equation becomes Rittinger's theory Used for fine particles < 1 um size. ... •It is rapid in action, and is capable of grinding many

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)...Assume that Rittinger'slaw is applicable. •It is desired to crush 10 ton/hr of iron ore hematite. The size of the feed is such that 80% passes a 72.6 mm screen, and 80% of product a 3.175mm screen. Calculate the gross power requirement for wet grinding and dry grinding. Work index of Hematite is 12.68 [Ans 17.96kW]

Rittinger's Law — The energy required for reduction in particle size of a solid is directly proportional to the increase in surface area. E = K R f c (1/L 2 – 1/L 1 ) Kick's Law — The amount of energy required to crush a given quantity of …...Equation (11.2) is a statement of Kick's Law. It implies that the specific energy required to crush a material, for example from 10cm down to 5cm, is the same as the energy required to crush the same material from 5mm to 2.5 mm. Rittinger, on the other hand, assumed that the energy required for size reduction is directly

• Grinding of coarse particles in which the increase in surface area per unit mass is relatively small, Kick's Law is a reasonable approximation • Rittinger's law – States that the energy required for size reduction is proportional to the change in surface area of the pieces of food • E = K R 1 1 D. p. D. f • K. R ...Rittinger and Kick's Laws of Crushing. I happen to be one of those who believe that Rittinger probably meant what he said when he wrote what Stadler …

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 …...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 .

In Summary, Kick's law is better for larger particles and Rittinger's for fine grinding, see Figure11.5. Large particles are easier to break than smaller ones as they have more cracks and faults. Often the laws are used in conjunction with empirically given constants: it can be dangerous to use the book values without some test work...15.1 Rittinger's law Rittinger's assumption was based on the fact that particles do not deform before breaking, therefore being infinitely brittle.Rittinger state that the energy required in size reduction is proportional to new surface created and gave the power n a value of 2 thus by integrating equation (1.9) obtained the so called Rittinger's law:

Transcript PROPOSAL FOR A SOLOMONIC SETTLEMENT BETWEENTHE THEORIES OF VON RITTINGER, KICK, AND BOND This paper presents a preliminary analysis of the fundamental relationshipbetween the net energy used and the respective product size throughout theentire range of sizes covered by crmshing and grinding, and an attempt tofind a sensible …...All the three classical models such as Rittinger's, Kick's and Bond's law were found suitable to explain the energy consumption for grinding. Energy consumption increased exponentially with decrease in classifying screen size of hammer mill.

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...Figure 7 shows Rittinger's comminution law fitting to the data of three feed sizes and nineteen product sizes and corresponding SECs from rotor impact mill grinding. The Rittinger constant of 104.5 for the rotor impact mill grinding is larger than 58.6 for the hammer mill grinding (Fig. 5), indicating that the hammer mill used less energy ...

Rittinger and Kick's Laws of Crushing. I happen to be one of those who believe that Rittinger probably meant what he said when he wrote what Stadler has quoted, "the increase of the surfaces exposed is directly proportional to the …...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 …

A comprehensive research project was undertaken to evaluate the effect of specific energy consumption (Ec) on variations of portland cement fineness measured by the Blaine test and sieve analysis. Amine and glycol-based grinding aids (GA) were incorporated at various concentrations of 0.04, 0.06, and 0.08% of the cement weight. At Ec values lower than around …...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 …

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 ...rittinger law specific grinding Grinding and cutting Unit Operations in Food Equation 112 is a statement of Kick s Law It implies that the specific energy required to crush a material for . More Info. rittinger law specific grinding oknadrewnianeeu.

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