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where KK is called Kicks constant and fc is called the crushing strength of the In Bonds equation, if L is expressed in microns, this defines Ei and Bond calls. What Is Bond s Law Of Crushing. cost of impact crushing as opposed to jaw crushing bonds law of crushing bond crushing law and work index bonds law of crushing experiment ...
The Bond work index Bond, 1960 is based on Bonds law, which states that the energy consumed is proportional to the 1.5 power of particle size rather than the square of Rittingers law. Accordingly, the energy consumed in reducing the particle size from x F to
Mar 11, 2016 Rittingers 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 ...
Mar 08, 2016 Von Reytts experiments, which Mr. Taggart cites, were made with working crushing machines, in which there are big friction losses, in bear ings mostly, the actual efficiency of which I consider to be less than 25 per cent., disregarding the energy
Jun 02, 2017 Jun 02, 2017 Where EEnergy, K K Kicks Constant, f c crushing strength of the material, L 1 initial length, and L 2 reduced length. Bonds Law states that the total work input represented by a given weight of crushed product is inversely proportional to the square root of the diameter of the product particles. Bonds Law can be written as
May 14, 2010 Rittingers and Kicks laws. Rittingers 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. Rittingers law is written as-. P Kr 1Dsb 1Dsa Kick ...
Equation 11.2 is a statement of Kicks 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
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 m, hence the 10 inside the brackets. Bonds Work Index values, in kWh per short ton i.e. 2000 lbs or 907 kg, roughly follow the Mohs scale of hardness, see Table 11.1.
Jan 01, 2016 Bonds crushing work index of gypsum. 3.4. A sample of granite passing a 7.5 cm square opening screen was suspended in a Bonds pendulum test. The length of the pendulum was 413 mm and the mass of hammers is 13.6 kg each. The sample was completely crushed when the initial position of the pendulums made an angle of 30 with the vertical.
Bonds 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 Pf 0.3162 wi 1 1 Dp Df ... Speed of crushing ranges between 125 to 425 gyrations per minute
Kicks Law 1885 The work required for crushing a given mass of material is ... Kicks Law n1 Bonds law n1.5 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,
Equation 11.2 is a statement of Kicks Law. It implies that the specific energy required to crush a material, for example from 10 cm down to 5 cm, is the same as the energy required to crush the same material from 5 mm to 2.5 mm.
The constants Kb, Kr and Kk used in the laws of crushing i.e., Bonds law, Rittingers law and Kicks law depend upon the A. feed material. B. type of crushing machine. C.
Jun 17, 2013 What is bonds law of crushing Wiki Answers. Bond postulated that work required to form particles of size Dp from very large What is the relationship between Rittingers law Kicks Law and Bonds Law More detailed
specific surface production are obtained by crush- Kicks law. Et. n x. 3. Bonds theory. Et 2C 11x . 4. For all practical purposes measurement of. CRUSHING LAWS. - ppt video online download - Content Crushing laws Rittinger law Kicks Bonds. Crushing dry
Mar 08, 2016 Either in pushing or pulling back the crushing faces, or, in accordance with a more universal law of nature, attacking the weaker part of the organization and completing the breaks upon the parts that have increased load put upon them by breaks alongside them.