rittinger law specific grinding

specific chemical composition of cement ball

CEMENT GRINDING AID COMPOSITION - Dow Global … 13. The cement mix of claim 9 having a 28 day compressive strength of at least 33 MPa. 14. A method for increasing grinding efficiency and improving specific surface area of a cement, the method comprising: intergrinding a mix of cement clinker, gypsum, one or more fillers, and the grinding aid composition of claim 1.

3minution.ppt - Comminution Rittingeru2019s Kick ...

View 3minution.ppt from METE 111 at Mindanao State University - Iligan Institute of Technology. Comminution Rittinger's, Kick's and Bond's Laws Crushing and …

to verify the laws of size reduction using ball mill and ...

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 ...

11 Crushing and classification

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.

Rittinger - an overview | ScienceDirect Topics

Kick's law is written as follows: W = K ′ log ( x 0 x) Rittinger's equation is said to fit better fine milling while Kick's expression describes better coarse grinding ( Earle, 1983 ). Example 6.4 Sugar crystals were ground from an average Sauter diameter of 500 μm to powder with an average Sauter diameter of 100 μm.

Influence of wood pellets properties on their grinding ...

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 bark and wood blends (i.e., softwood and hardwood).

(PDF) - Comminution | Crystal Del Rosario - Academia.edu

Comminution Rittinger's, Kick's and Bond's Laws Crushing and Grinding Variations of Particle Fracture Abrasion Localized stresses at the surface Occurs when insufficient energy is applied to cause significant fracture of the particles Variations of Particle Fracture Cleavage Slow compression Occurs when energy applied is just sufficient to load comparatively few regions …

CHAPTER 11 SIZE REDUCTION - NZIFST

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

THE EFFECT OF BALL MILL OPERATING PARAMETERS ON …

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

Bond039s Equation In Grinding Mills

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 Details. rittinger law.Ball Grinding Mill Modeling Equations In Saudi Arabia. 3023 ball mill ...

Grinding Mills - Grinding Laws | Technology Trends

Grinding Laws. In spite of a great number of studies in the field of fracture schemes there is no formula known which connects the technical grinding work with grinding results. ... Von Rittinger for d 0.05 mm; with W as grinding work in kJ/kg, c as grinding coefficient, ... The specific surface area referring to volume S v and the specific ...

what is bond s law of crushing - MC World

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

CHAPTER 20: SIZE REDUCTION – EQUIPMENT FOR SIZE …

• 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 ...

Grinding And Crushing Laws

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 .

Mechanism Grinding Aids - Home - C-ADD Mapei

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).

CPE: Lesson 15. Empirical laws of Size Reduction

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.

Particle Engineering | The Science Behind the Process

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 the increase of surface area and not length or width.

Grinding Process - Mineral Processing & Metallurgy

Let us apply these ideas to the derivation of an equation for the rate of grinding in a mill. It follows that if, as appears reasonable, the change of specific surface S cm²/cm³, within a mill depends upon the diameter of the mill, upon the ball diameter and upon the mean diameter of the particle, D, d and b respectively, upon the density of the balls and the pulp, q and σ …

Cement Finish Milling (Part 2: Comminution)

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 ...

4 Size reduction - UB

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 ...

Size-Reduction_Heat-Transfer_AnaChem-Edited.docx - MRII ...

Rittinger's Law The average diameter of sphalerite is 1000 microns, the ration of specific surfaces is. 4 The critical speed of a ball mill with 12 in diameter, grinding balls diameter of ½ in. 80 The operating speed of a ball mill should be.

rittinger law specific grinding - 4chefs.pl

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

Rtkm Separator For Ore Ball Mills

Rittinger law specific wet ball mill ball mill is used in power plants ball mill and making plant trade assurance ball mill grinding machine rtkm separator for gold grinding ball mills Email email protected Phone 86 whatsapp 86.

Theory Of Pedal Powered Grinding Machine

Old fashion gold crushers Crusher Unit.Rittinger's theory and law of the energy Inquire Now man sharpening an axe on an old pedal powered grinding stone rittinger law specific grinding Inquire Now Grinding machines may also be used for …

(PPT) Size Reduction | zerp daf - Academia.edu

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 ...

Rock Crushing Theory and Formula using Kick & …

Rittinger's theory is the law of the cracks. It is well explained in an article by E. A. Hersam in the Mining and Scientific Press, an abstract of which is given in the third volume of Richard's Ore Dressing, and to which I acknowledge my indebtedness for some of my ideas and,methods. The mathematics of this theory follow:

Unit Operations in Food Processing - R. L. Earle

(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 Lfor a mass of particles from 10 cm to 5 cm would be the same as that required to reduce, for example,

rittinger law specific grinding - nordcoffeetech.fr

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. Learn More

Chapter 12 Comminution Energy and Evaluation in Fine Grinding

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 …

Principle of Size Reduction | Mill (Grinding) | Explosive ...

5% of ALL electricity generated is used for grinding Efficiency of grinding processes 1-5% Unfortunately models available too empirical. Three postulates for predicting energy requirements: Rittinger, kick, Bond Highly empirical Varying levels of success.

rittinger law specific grinding

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 pieces. 4 Size reduction Universitas Brawijaya grinding in which there is a relatively …

Unit OperatiOn Size Reduction - ceng.tu.edu.iq

In the grinding process, materials are reduced in size by fracturing them. In the process, the material is stressed by the ... A Rittinger's Law (2) As the specific surface of a particle (the surface area per unit mass) is proportional to 1/L, equation (2) postulates that the ... Rittinger's Law fits the experimental data better. 3) Bond has ...

Energy requirements in size reduction of solids

In the case of grinding i.e., the size reduction carried out in conventional product and ball mill operations, Bond's theory is reasonably applicable. The slope of the curve is about 0.5. In fine grinding range such as grinding of cement etc. Rittinger's law is applicable. The slope of the curve would be approximately-1, 71 100 0 100 UO 0

Principles of Size Reduction - Solid Foods - Food Science ...

Determination of energy required in size reduction is generally done using either Kick's law or Rittinger's law. Kicks's law is used for coarse grinding when the size ratio of original material to end materials is 8:1. Bond's law and Retinger's law are used for intermediate and fine grinding respectively, where ratios approach or ...

Lecture 3 Process Engineering of Size Reduction | Mill ...

Size reduction equipment - Part I, Fabrizio Sarghini ...

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 ...

Effect of specific energy consumption on fineness of ...

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.

(PDF) Development of size reduction equations for ...

Rittinger constant for grinding pine chips by hammer mill is ... Are scaling laws on stre ngth of solids. related to mecha nics ... Experimental study on …

A commentary on the Kick, Bond and Rittinger laws of …

Rittinger's law is logical if the specific energy is defined as that necessary to supply the surface energy of the fresh surface produced on fracture. However, it is not used with this understanding, because E is taken as the mill energy, which is quite another matter- If E Is mill energy, eqn. (3) is an empirical law.