Rock Crushing Theory and Formula using Kick & Rittinger's Lawthe two antagonistic “laws” of crushing already mentioned. The fracture of cubes by compression in a testing machine produces, in nearly all cases, pyramids of the same general shape (Fig. 1), indicating that the stresses are greatest along certain planes of fracture; and, since the relative.**bonds law equation in crushers**,comminution laws - ACS PublicationsThis article deals with the relationship of both material and crushing mechanism to the exponent of particle size in the conventional comminution law, from the viewpoint of several probabilities. With the aid of this analysis, an empirical equation has been obtained, from which Rittinger's law, Kick's law, and Bond's third.

11 Crushing and classification - Particle Technology11.2 Crushing laws. All the common basic equations relating energy requirement for comminution can be derived from a single ordinary differential equation . Bond's. Work Index values, in kWh per short ton: i.e. 2000 lbs or 907 kg, roughly follow the Moh's scale of hardness, see Table 11.1. In Summary, Kick's law is better.**bonds law equation in crushers**,Laws of comminution - NPTELBond, so we are having three laws of comminution and we call it Kicks law, Rittingers law, and. Bonds . So if we consider the Kicks law the energy consumption while crushing 200 mm material to 50 mm as well as 2 .. size, it means when we consider very large size feed 1/√df is negligible and thus the equation satisfies.

80% by weight of the sample is smaller than it. Bonds law is often written in terms of the work index (Wi) as,. Where the work index is defined as the energy required per unit mass in kWh/ton to reduce an infinitely large particles to D80 = 100 μm. In the above equation, unit of D80 is in mm, of. 'W' is kWh and of 'm' is in ton.

Sep 4, 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 industrial processes are discussed. Applicability in terms of feed size is discussed for three laws of comminution. Finally differential equation is described which gives expressions.

the two antagonistic “laws” of crushing already mentioned. The fracture of cubes by compression in a testing machine produces, in nearly all cases, pyramids of the same general shape (Fig. 1), indicating that the stresses are greatest along certain planes of fracture; and, since the relative.

This article deals with the relationship of both material and crushing mechanism to the exponent of particle size in the conventional comminution law, from the viewpoint of several probabilities. With the aid of this analysis, an empirical equation has been obtained, from which Rittinger's law, Kick's law, and Bond's third.

respectively. Experiments show that the first term in Eq. (3) is not independent of s. D , and as a result the above equation is difficult to use for analysis. Instead a number of empirical laws have been proposed for calculation the energy requirements for crushing. The laws can be unified in a differential form as follows: n s s. D.

80% by weight of the sample is smaller than it. Bonds law is often written in terms of the work index (Wi) as,. Where the work index is defined as the energy required per unit mass in kWh/ton to reduce an infinitely large particles to D80 = 100 μm. In the above equation, unit of D80 is in mm, of. 'W' is kWh and of 'm' is in ton.

mental data well, and therefore a modified Bond equation was developed. Differences in . Kick's equation is applicable for crushing, Rittinger's equation may be used for finer grinding, and Bond's equation is applicable in the conventional milling range. . Law can be reasonably applied to the range in which ball/rod.

Sep 4, 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 industrial processes are discussed. Applicability in terms of feed size is discussed for three laws of comminution. Finally differential equation is described which gives expressions.

Each calculation step includes the solution of equations of motion to a particle, using a force-displacement law for each contact1. The rock is modelled as an assembly of stiff particles (balls) that are bonded together. The properties of the bonds between balls can be defined in the PFC3D software22. For the purpose of.

15 Conclusions All the above equations are dimensionless. Rittinger's law deals with measurements of surface areas . Kick's law deals with volumes of product's particles . Bond's theory deals with lengths of cracks formed. Kick applies to coarse sizes (> 10 mm). Bond applies down to 100 µm. Rittinger applies to sizes < 100.

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.

Oct 10, 2014 . Rittinger's law: – putting p = −2, then integration gives: – Writing C = KRfc, where fc is the crushing strength of the material, then Rittinger's law, first . Bond has suggested a law intermediate between Rittinger's and Kick's laws, by putting p = −3/2 in the general equation: • Writing C = 5Ei then: • Bond terms.

Oct 5, 2017 . Following Rittingers law, Crushing efficiency is ____ a) Independent . What does the below equation represent? mechanical-operations-questions-answers-size-reduction-q3 a) Arrhenius Law b) Kick's Law c) Bond Law . According to Kick, the work required for crushing a mass of material is ____ a) Zero

How to calculate the power for a stone crusher which parameter to fix can't get it please follow the link if anyone has answer. Power required for other . affect the power requirement. There is an equation for size reduction. . You can calculate power required by the bonds law of crushing. For more about the bonds law, see.

otherwise alter the requirements of any national, state, or local governmental statutes, laws, regulations, ordinances, or other . Bond Impact Crushing Wi Test. 4 .. ment power (kW), and T is the circuit tonnage (metric t/h). • Calculate the Actual Operating Bond Work Index. (equation 2):. W. WioACT = ––––––––––––. (2).

According to this law, the area of the new surface produced by crushing or grinding is directly proportional to the useful. work consumed, is to . The Bond Index is defined by a grindability test. . These attempts concluded that these three proposals can be considered as being the integrals of the same differential equation.

crushers and grinding mills, is ore's work index which is experimentally calculated. The work index, wi, is a parameter which presents the ore grindability and is used in. Bond formula. The required energy to break and reduced ores size is calculated by "Bond law" which is presented as equation 1[1]. In equation 1, W is the.

2.2 Coarse crushing. 2.2.1 Jaw crusher. 2.2.2 Hammer crusher. 2.3 Fine grinding. 2.3.1 Vibration ring mill. 3. Simulation of grinding based on the generalized size-mass balance model. 4 . Some examples are foods such as flour, sugar, and spices; construction materials such .. For N=1.5 , you get the Bond law. )A. A(C d.

17. 2.2.1.1 Jaw Crushers. 17. 2.2.1.2 Gyratory Crushers. 18. 2.2.1.3 Roll Crushers. 19. 2.2.2 Grinders. 20. 2.2.2.1 Hammer Mills. 21. 2.2.2.2 Ball Mills. 22. 2.3 Power Requirements For Crushing. 24. 2.3.1 Crushing Efficiency. 24. 2.3.2 Laws of Crushing. 25. 2.3.2.1 Rittinger's Law. 25. 2.3.2.2 Kick's Law. 25. 2.3.2.3 Bond's Law.

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