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Rittinger (1867), Kick (1885) and Bond (1952) all proposed empirical laws to estimate the specific energy requirement for accomplishing a given extent of size reduction expressed in terms of the initial and final particle size (length dimension) and an empirical constant.
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 force required for reducing" "and therefore also to the work absorbed in effecting the separations." (The italics are now mine instead of Rittinger''s or Stadler''s.)
Laws Of Crushing And Grinding Sep 04, 2016· 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 Get Price rittinger law specific grinding . laws of crushing and grinding The law specifically grinding Rittinger.
It has been found, experimentally, that for the grinding of coarse particles in which the increase in surface area per unit mass is relatively small, Kick''s Law is a reasonable approximation. For the size reduction of fine powders, on the other hand, in which large areas of new surface are being created, Rittinger''s Law fits
Oct 25, 2016· size reduction,laws involved in size reduction,application mills 1. SIZE REDUCTION Size reduction is the process of reducing the particle size of a substance to a finer state of subdivision to smaller pieces to coarse particles or to powder. Size reduction process is also referred to as comminution and grinding.
FM 306: SIZE REDUCTION AND SIEVING OBJECTIVE •To grind the given limestone material to a smaller size using a ball mill and to obtain the size distribution of the initial and the final mixture by sieving. •To estimate the energy required for the grinding operation. •To analyze the results using the available theories. INTRODUCTION
were proposed by Rittinger (1867), Kick (1885) and Bond (1952), known as the three ... Bond (1952) proposed the ''Third Law'' of grinding. The Third Law states that the net energy required in comminution is propor ... between the product P80 and the net specific grinding energy for all LIMS tail (non magnetic) and LIMS concentrate
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 specific grinding ic4medicapsin A commentary on the Kick, Bond and Rittinger laws of grinding A, Eq 22 is the link that joins the classical energy
Peter Ritter von Rittinger or Peter von Rittinger (see styling variants at Ritter) (23 January 1811 Nový Jičín / Neutitschein – 7 December 1872 Vienna) was an Austrian Montanist and pioneer of mineral processing.. Life. The son of poor parents, Peter von Rittinger attended high school in Leipnik (Lipník nad Bečvou, Moravia) and, in difficult circumstances, studied at the Faculty of ...
Grinding and cutting. Energy Used in Grinding Kick''s Law Rittinger''s Law Bond''s Law Work Index New Surface Formed by Grinding shape factors specific surface Grinding equipment. Crushers Hammer mills Fixedhead mills Plate mills
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.
Chemical Engineering Stop: Rittinger''s and Kick''s laws. May 14, 2010· Rittinger''s and Kick''s laws Rittinger''s law states that work required in crushing is proportional to the new surface created. In other words, crushing efficiency is constant and for a given machine and feed material is independent of the sizes of feed and product.
where E is the net specific energy; x f and x p are the feed and product size indices, respectively, and K 2 is a constant. Bond (1952) proposed the ''Third Law'' of grinding. The Third Law states that the net energy required in comminution is proportional to the total length of the new cracksformed. The resulting equation is:
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.
Equation () 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. () 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 ...
Von Rittinger for d < mm = (−) with W as grinding work in kJ/kg, c as grinding coefficient, d A as grain size of the source material and d E as grain size of the ground material. A reliable value for the grain sizes d A and d E is d 80. This value signifies that 80% (mass) of the solid matter has a smaller grain size.
rittinger law specific grinding grinding. The Third Law states that the net energy required in comminution is propor tional to the ... 19 May 2014 ... laws of crushing and grinding, ...
Grinding laws namely Kick''s, Rittinger''s and Bond''s law were applied. The grinding constants (KK, KR, WI) for different laws reflected the dependency on grinding duration.
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.
In Summary, Kick''s law is better for larger particles and Rittinger''s for fine grinding, see 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.
Neither of these two laws permits an accurate calculation of the energy requirements. Rittinger''s law is . Airborne Dust Liberation During Coal Crushing CDC. Analogous to the laws of Bond, Kick and Rittinger [20], more specific energy is required to .
the grinding laws. THE GRINDING LAWS The amount of energy required for size reduction of solid foods can be theoretically calculated based on the following equation: d d, n x E K x = − (1) where: dE is the energy required in breaking a unit mass of diameter x about size dx, K and n are constants depending on the ground material and grinding ...
Energy requirements in size reduction of solids * L G. Reddy INTRODUCTION ... specific surface production are obtained by crush ... fine grinding is the range of Rittinger''s theory ( m = — ). the range of fine grinding from m = —1 to — 3,
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 ...
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