### Rittinger's, Kick's and Bond's Crushing Laws - YouTube

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### wha Tis bond s law of crushing

Kick''s law has been found to hold more accurately for coarser crushing, where most of the energy is used in causing fracture along existing cracks. In Kick''s law the energy input is proportional to the size reduction ratio. In other words the same energy input is required for a reduction in size from 1 cm to 1 mm as for a reduction from 100 ...

### what is bond s law of crushing - MC World

It is required to know about the strength of the stone to be crushed and accordingly size of the You can calculate power required by the bonds law of crushing. Laws of comminution - YouTube 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

### Rock Crushing Theory and Formula using Kick & Rittinger's Law

Mar 11, 2016 · “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 diameter of the final product, assuming that all the mass has been reduced to one exact size, which is only theoretically possible.”

### 11 Crushing and classification

where Wi is the Bond Work Index, again in energy per unit mass terms. The index is defined as the energy required to crush from infinite size down to 100 µm, hence the 10 inside the brackets. 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.

### Bond Work Index - an overview | ScienceDirect Topics

The Bond work index is not solely a material constant but is influenced by the grinding conditions. For example, the finer the grind size desired, the higher is the kWh/t required to grind to that size. Magdalinovic [38] measured the Bond work index of three ore types using different test screen sizes.

### Chemical Engineering Stop: Rittinger’s and Kick’s laws

May 14, 2010 · Friday, 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. Rittinger’s law is written as- P/ ṁ = Kr (1/Dsb – 1/Dsa)

### wha Tis bond s law of crushing

Kick''s law has been found to hold more accurately for coarser crushing, where most of the energy is used in causing fracture along existing cracks. In Kick''s law the energy input is proportional to the size reduction ratio. In other words the same energy input is required for a reduction in size from 1 cm to 1 mm as for a reduction from 100 ...

### 11 Crushing and classification

where Wi is the Bond Work Index, again in energy per unit mass terms. The index is defined as the energy required to crush from infinite size down to 100 µm, hence the 10 inside the brackets. 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.

### what what is bond s law of crushing

what is bond s law of crushing - ornamentum-lugdunum.nl. calculations bond s law for crushing nl fotografienl. Bond's Law Of Crushing Crusher USA 2014626 About bond's law of crushing related information iranian laws & government the constitution of islamic republic of iran in the name of god Get Price bond f c crushing

### Bond Work Index - an overview | ScienceDirect Topics

The Bond work index ( Bond, 1960) is based on Bond’s law, which states that the energy consumed is proportional to the 1.5 power of particle size rather than the square of Rittinger’s law. Accordingly, the energy consumed in reducing the particle size from x F to

### CHAPTER 20: SIZE REDUCTION – EQUIPMENT FOR SIZE

Bond’s law • The work required to form particles of size Dp from very large feed is proportional to the square root of the surface to volume ratio of the product • P/f = 0.3162 wi 1 1 √Dp √ Df ... • Speed of crushing ranges between 125 to 425 gyrations per minute

### Fred Chester Bond - Wikipedia

Bond Work Index. In the 1930s through early 1950s, Bond developed a new theory of comminution that introduced an index, called the 'Bond Work Index', which relates power consumption in crushing and grinding to the feed and product size distribution. His theory and index were introduced in a widely cited 1952 journal article. Bond called his theory the "third theory of comminution", counting ...

### Size Reduction Equipment

Kicks Law (1885) The work required for crushing a given mass of material is ... •Kick’s Law n=1 •Bonds law n=1.5 •Particles of average feed size 50 x 10(-4) m are crushed to an average product size of 10 x 10 (-4) m at the rate of 20 tonnes per hour. At this rate,

### 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. Rittinger’s law is written as-. P/ ṁ = Kr (1/Dsb – 1/Dsa) Kick ...

### CPE: Lesson 15. Empirical laws of Size Reduction

Kick’s law has been found to hold more accurately for coarser crushing, where most of the energy is used in causing fracture along existing cracks. In Kick’s law the energy input is proportional to the size reduction ratio. In other words the same energy input is required for a reduction in size from 1 cm to 1 mm as for a reduction from 100 ...

### Relationships between comminution J energy and product ...

Kick’s equation is applicable for crushing, Rittinger’s equation may be used for finer grinding, and Bond’s equation is applicable in the ... However Bond’s Third Law can be reasonably applied to the range in which ball/rod mills operate in. In spite of the empirical basis of Bond’s theory, it is the most widely used method for the ...

### Calculating Crushing Constant Using Bond S Law

Calculating crushing constant using bonds law bond work index formula-equationee this useful summary table of bond work index by mineralsor any circuit, whether a crushing circuit, a rod mill, or a closed ball mill circuit, the work index always means the equivalent amount of energy to reduce one ton of bond s law for crushing mills -. Read More.

### Unit OperatiOn Size Reduction

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 the experimental data better. 3) Bond has suggested an intermediate course, in which he postulates that n = -3/2 and this leads to: '= ' Ü § 5 4 4 Å .

### How Material Size Directly Affects Size Reduction Energy ...

Mar 25, 2015 · 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 material to a specified fraction of its original size is the same, regardless of the original size.

### Kicks LawIt state that the work required for crushing a ...

Exercise 1 (a) 1) A material consisting originally of 25 mm particle is crushed to an average size of 7 mm and requires 20KJ/kg for this size reduction. Determine the energy required to crush the material from 25 mm to 3.5 mm. Assuming: a) Ritttingers law b) Kicks law c) Bond law. (3) 270kw of power is required to crush 150 tones/h of a material.

### Relationships between comminution J energy and product ...

Kick’s equation is applicable for crushing, Rittinger’s equation may be used for finer grinding, and Bond’s equation is applicable in the ... However Bond’s Third Law can be reasonably applied to the range in which ball/rod mills operate in. In spite of the empirical basis of Bond’s theory, it is the most widely used method for the ...

### Size Reduction Equipment

Kicks Law (1885) The work required for crushing a given mass of material is ... •Kick’s Law n=1 •Bonds law n=1.5 •Particles of average feed size 50 x 10(-4) m are crushed to an average product size of 10 x 10 (-4) m at the rate of 20 tonnes per hour. At this rate,

### How Material Size Directly Affects Size Reduction Energy ...

Mar 25, 2015 · 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 material to a specified fraction of its original size is the same, regardless of the original size.

### what what is bond s law of crushing

what is bond s law of crushing - ornamentum-lugdunum.nl. calculations bond s law for crushing nl fotografienl. Bond's Law Of Crushing Crusher USA 2014626 About bond's law of crushing related information iranian laws & government the constitution of islamic republic of iran in the name of god Get Price bond f c crushing

### bond crushing law and work index

Mar 21, 2017 · calculations bonds law for crushing. The work index in Bond's law for crushing of solids has the following dimensions a) No units (dimensionless) b) KWh/ton c) KW/ton d) KWh.m 1/2 /ton Chemical Engineering Stop: Bond's law May 14, 2010· Where Kb is

### Kicks LawIt state that the work required for crushing a ...

Exercise 1 (a) 1) A material consisting originally of 25 mm particle is crushed to an average size of 7 mm and requires 20KJ/kg for this size reduction. Determine the energy required to crush the material from 25 mm to 3.5 mm. Assuming: a) Ritttingers law b) Kicks law c) Bond law. (3) 270kw of power is required to crush 150 tones/h of a material.

### Crushing Theory | PDF | Mill (Grinding) | Applied And ...

Bond’s Law • The 80% passing size of the product may be calculated from the following Bond equation: 𝑃 in. = 𝑶33 𝑋 0.04 𝑊𝑖 + 0.40 In which the characteristics of the material are taken into consideration by the work index factor Wi and O33, the open side setting of the crusher

### Mineral Processing - SlideShare

May 15, 2014 · 17 Bond’s law (1952) Energy required is based on geometry of a crack expansion as it opens up. Bond has developed an equation which is based on the theory that the work input is proportional to the new crack tip length produced in particle breakage, and equals the work represented by the product minus that represented by the feed.

### QUICK METHOD FOR BOND WORK INDEXAPPROXIMATE

Table 1. Bond's mill specification and grinding conditions Mill diameter, D m, cm 30.48 Mill Length, L m, cm 30.48 Number of mill rotations in minutes, n, min-1 70 Mill balls weight, M b, kg 21.125 Geometry of mill liner smooth Grinding type dry V ore, cm 3 700 Andesite and limestone samples were prepared by crushing in a laboratory jaw

### Metallurgy - Definition, Principles & Examples

Metallurgy is defined as a process that is used for the extraction of metals in their pure form. The compounds of metals mixed with soil, limestone, sand, and rocks are known as minerals. Metals are commercially extracted from minerals at low cost and minimum effort. These minerals are known as ores. A substance which is added to the charge in ...

### What happens to atoms when an object is crushed? - Quora

Answer (1 of 16): What happens to atoms when an object is crushed? It depends on how “hard” the object is “crushed”. An ordinary object (say a piece of chalk), if crushed sufficiently strongly and well, say, with a mechanical hammer, it could be broken up into its molecular and/or its atomic pa...

### 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

### bond crushing law - mobilistico.de

Chapter 3 Particle Technology Size Reduction Kick’s law the work required for crushing a given mass of material is constant for the same reduction ratio 322 Bond crushing law and work index What is bonds law of crushing Where Kb is a constant that depends on the type of machine and on the material being crushed To use this equation a work ...

### bond | law | Britannica

bond, In law, a formal written agreement by which a person undertakes to perform a certain act (e.g., appearing in court or fulfilling the obligations of a contract).Failure to perform the act obligates the person to pay a sum of money or to forfeit money on deposit. A bond is an incentive to fulfill an obligation; it also provides reassurance that compensation is available if the duty is not ...

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