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May 14, 2010 · Where Kb is a constant that depends on the type of machine and on the material being crushed. To use this equation, a work index Wi is defined as the gross energy requirement in kilowatt-hours per ton of feed needed to reduce a very large feed to such a .

[PDF]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 Fixed-head mills Plate mills

•A crushing law proposed by Rittinger in 1867 states that – the work required in crushing is proportional to the new surface created • This law, which is really no more than a hypothesis – is equivalent to the statement that the crushing efficiency is constant and, for a given machine and feed material – is independent of the sizes of feed and ...

Grinding and cutting - Unit Operations in Food Processing - RL Earle 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 ...

Ponder Technology, 7 (1973) 315-317 Elsevier Sequoia S A, Lausanne - Printed to The Netherlands A Commentary on the Kick, Bond and Rittinger Laws of Grinding L. G. AUSTIN Department of Material Sciences, The Pennsylcanta State University, University Park, Pa 16802 (U S A ) (Received November 8, 1972) 315 Summary Confusion concerning the so-called general lass of grinding proposed by Walker .

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- Mill (grinding) - Wikipedia
A mill is a device that breaks solid materials into smaller pieces by grinding, crushing, or cutting. Such comminution is an important unit operation in many processes.There are many different types of mills and many types of materials processed in them. Historically mills were powered by hand (e.g., via a hand crank), working animal (e.g., horse mill), wind or water ().

- Related items: Mortar and pestle, Expeller, Extruder
- Size reduction_Pharmaceutical engineering - SlideShare
Jun 03, 2014 · Size reduction_Pharmaceutical engineering 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.

- Rittinger Law Specific Grinding
rittinger law specific grinding impactcrusherinfo.webcam. Rittinger's law has been found to hold better for ﬁne grinding, PE series jaw crusher is usually used as. Energy requirements in size reduction of solids [email protected]

- Relationships between comminution J energy and product ...
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

[PDF] - Relationship between comminution energy and product size ...
Conversely Figure 3, which illustrates the relationship between the product P80 and the net specific grinding energy for all LIMS tail (non magnetic) and LIMS concentrate (magnetic) samples tested using the batch ball mill, indicates that at finer grind levels the LIMS tail (non magnetic) produces a finer P80. ... Rittinger's law Batch ...

- Rittinger - an overview | ScienceDirect Topics
Kick's law, valid for particles greater than 0.5 cm, was used less than Rittinger's law, which proved to be interesting for particles smaller than 100 μm at the mouth of the grinder. ... Calculate the specific grinding energy for the fine particle tumbling mill to give a product P 80 of 106 μm. Solution.

[PDF] - A crushing law proposed by Rittinger in 1867 states that ...
•A crushing law proposed by Rittinger in 1867 states that – the work required in crushing is proportional to the new surface created • This law, which is really no more than a hypothesis – is equivalent to the statement that the crushing efficiency is constant and, for a given machine and feed material – is independent of the sizes of feed and ...

- rittinger law crusher
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 crush coal material into smaller product sizes.

- 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 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.)

[PDF] - Grinding and comminution - Delft Solids Solutions
•To increase the specific surface area •To produce particles of certain size/shape ... Rittinger [s law, b)Kicks law and c)Bonds Law 20. Predicting Energy Requirements Rittinger: C R ... •Use wet grinding (good heat transfer, liquid may serve a heat sink)

[PDF] - bond s law for crushing
Bond called his theory the "third theory of comminution" counting those of Peter von Rittinger and Friedrich Kick as the first and second. This term and the terminology of "laws of comminution" as in "Rittinger's law" "Kick's law" and "Bond's law" are sometimes used in the field, along with those of subsequent researchers . CPE: Lesson 15.

- Energy requirements in size reduction of solids - .
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 = — 1.0 ). - the range of fine grinding from m = —1 to — 3,

- FM 306: SIZE REDUCTION AND SIEVING - IIT Bombay
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

- dolamite law crusher for sall
Rittinger law specific grinding. dolamite law crusher for sall - oknadrewnianeeu. rittinger law specific grinding,oregrindergq, TECHNICAL NOTE Note on Rittinger's Law of Grinding by LG Austin If S(x) is the specific rate of breakage, Read More. Get More Info; A commentary on the Kick, Bond and Rittinger laws of grinding.

- FM 306: SIZE REDUCTION AND SIEVING - IIT Bombay
Note that the definition of particle size in Bonds law is different: D80 = Particle size such that 80% by weight of the sample is smaller than it. Bonds law is often written in terms of the work index (W i ) as,

[PDF] - grinding laws encyclopedia
Laws Of Crushing And Grinding rittinger law specific grinding . laws of crushing and grinding The law specifically grinding Rittinger. It is against the law! In 1988, the grinding wheel industry Home Grinding Mill Information rittinger law specific grinding. get price . FM 306: SIZE REDUCTION AND SIEVING IIT Bombay.

[PDF] - (310b) Teaching Old Laws New Tricks – Specific Energy ...
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.

[PDF] - fine wet ball mill rittingers
Energy requirements in size reduction of solids . Energy requirements in size reduction of solids * L G. Reddy INTRODUCTION It is no exageration to state that of the many approaches to understand different aspects of process of comminution, perhaps the most important one is the search for the sound rela tionship between the size and the energy used.

[PDF] - specific for grinding
Modelling of specific energy requirement during high ... Grinding is a -point cutting operation. The specific energy or the energy expended for unit material removal in grinding is very high, typically one or two orders higher than the machining specific energy.

- INDIAN INSTITUTE OF TECHNOLOGY ROORKEE NPTEL NPTEL .
Rittingers law what is the limitation of this law, that the mechanical losses. (Refer Slide Time: 13:25) Due to friction and inertia in grinding equipment are not accounted in Rittingers law. Why it is so, because if you consider the Rittingers law it only speaks about new surface created however some of .

- size reduction,laws involved in size reduction ...
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.

- Comminution - Wikipedia
Comminution is the reduction of solid materials from one average particle size to a smaller average particle size, by crushing, grinding, cutting, vibrating, or other processes. In geology, it occurs naturally during faulting in the upper part of the Earth's crust.

- bond s law for crushing
Bond called his theory the "third theory of comminution" counting those of Peter von Rittinger and Friedrich Kick as the first and second. This term and the terminology of "laws of comminution" as in "Rittinger's law" "Kick's law" and "Bond's law" are sometimes used in the field, along with those of subsequent researchers . CPE: Lesson 15.

- grinding and crushing laws
grinding and crushing iron ore, Grinding laws Grinding machines Types of grinding mills crushing grinding and screening of iron, [Chat Online] Relationships between comminution J energy and, grinding The Third Law states that the net energy required in comminution is propor-tional to the total length of the new cracks, crushing and grinding; .

- Comminution - Wikipedia
Comminution is the reduction of solid materials from one average particle size to a smaller average particle size, by crushing, grinding, cutting, vibrating, or other processes. In geology, it occurs naturally during faulting in the upper part of the Earth's crust.

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- Size reduction_Pharmaceutical engineering - SlideShare