Recommended peripheral speed for the turbine agitator is 200-250 metres/minute. Turbine agitator should be located at a height not less than one agitator diameter length from the bottom. If the depth of liquid in the tank is more than twice the …

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Where: E=Energy, K K =Kick's Constant, f c =crushing strength of the material, L 1 =initial length, and L 2 =reduced length. Bond's 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. Bond's Law can be written as:

a) A continuous grinder obeying Bond Crushing law | Chegg. 3. a) A continuous grinder obeying Bond Crushing law grinds a solid at the rate of 1000 Kg/hr from the initial diameter of 10 mm to the final diameter of 1 mm. If the market now demands product particles of size 0.5 mm, what will be the output rate of the grinder for the same power ...

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Hence W = constant x P. That is to say, the work done, in crushing a given weight of ore from any one stage to the next, would, from this reasoning, be proportional to the number of particles at the first of these two stages. If this were actually the case, the law deduced would give, with the finer sizes, extremely large work values, even ...

Title: Bond F.C., 1961. Crushing and Grinding Calculations.pdf Author: can Created Date: 4/2/2009 4:00:03 PM

View full document. • Based on Bond's Crushing Law, the power required to crush a certain material will change by % if the diameter of the product is made smaller by 50%. • In crushing a certain ore, the feed is such 80% is less than 50.8 mm in size and the product size is such that 80% is less than 6.35 mm. The power required is 89.5 kW.

The Bond Work Index is material specific and is obtained from laboratory crushing tests on the feed material. Hard and brittle materials have a work index in the range 4 × 10 4 − 8 × 10 4 J/kg. Bond's law holds reasonably well for a variety of materials undergoing coarse, medium and fine size reduction. (Eq. 14.3a) can also be reduced to

is called the crushing strength of the material, we have: dE/dL = -K K f c L 1 which, on integration gives: E = K K f c ln(L 1 /L 2) (11.2) 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

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Generalized Law : (n 2, 1 and 1.5 for Rittinger's, pp d (Dvs) vs Kik's and Bond's laws respectively) Work Index: the gross energy requirement in kilowatt hour per short-ton of feed (kWh/ton of feed) to reduce a very large particle to such a size that 80% of the product will pass through a 100 gm or 0.1 mm screen. — = 0.3162 w P Upp ] Lipp ]

The test determines the Bond Impact Work Index which is used with Bond's Third Theory of Comminution to calculate net power requirements when sizing crushers*. It is also used to determine the …

Bond's Law: The work required to form particles from very large feed is proportional to the square root of the surface-to-volume ratio. E = KBfc [ (1/L2)1/2- (1/L1)1/2] Rittinger's Law — The energy required for reduction in particle size of a solid is directly proportional to the increase in surface area. E = KRfc(1/L2– 1/L1)

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Based on Bond's Crushing Law, the power required to crush a certain material will change by _____ if the diameter of the product is made smaller by 50% a. 50% b. 41% c. 25% d. 75% 0.87 Sphericity for a cylinder whose length equals its diameter is a. 1.5 b. 0.5 c. 0.87 d. 5

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UCG Info Brief Eng 3d Dig Comminution laws estimate energy Esigma for crushing grinding by following.Bond law: Esigma = Wb * 10 * (1 SQR(L2) 1 SQR(L1)),kWh t;; Rittinger law:. Comminution Wikipedia Comminution is the reduction of solid materials from one average particle size to a smaller average particle size,by …

For some comparative benchmarking information look at, Ballantyne, G.R. and Powell, M.S., Benchmarking comminution energy consumption for the processing of copper and gold ores. Minerals Engineering, 65, 2014, 109-114. Benchmarking comminution energy for copper and gold ores. Robert is correct, there are a couple of other frameworks also out …

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Size reduction process is also referred to as comminution and grinding. When the particle size of solids is reduced by mechanical means it is known as milling. 2. Mechanism of Size Reduction: Cutting – here the material is cut by means of a sharp blade or blades. EX: Cutter mill Compression – in this method, the material is crushed between ...

A.A continuous grinder obeying the Bond crushing law grinds a solid at the rate of800 kg/h from the initial diameter of 12 mm to the final diameter of 2 mm. If it is required to produce particles of 1-mm size, what would be the output rate of the grinder (in kg/h) for the same power input? 470.32 kg/h. B.

LAWS The three laws of Rittinger, ing relationship, rial size C.51 proposed Kick and Bond can all be derived by Charles (1957), between energy from the follow- consumed and mate- : &=-kg Yn Setting the exponent Bond …

Von Rittinger's law (1867): It states that the energy consumed in the size reduction is proportional to the area of new surface generated. putting p = −2, then integration gives: Writing C = KRfc. fc is the crushing strength of the material.L2 & L1 are the final and initial particle sizes.KR is the Rittinger's constant.

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The Kick and Rittinger laws are special cases of one form, and Bonds law is a special case of the other. Thus it is possible for Rittinger's and Bond's laws to apply to the same set of data. Recommended articles. References (6) Size reduction; F.C ... The crushing energy of coal plays an important role in mining, gas extraction, occurrence of ...

Bond's Law, named after the British engineer Robert Bond, states that the energy required to reduce the size of a particle is proportional to the surface area created. This law assumes that the energy required for crushing or grinding a material depends only on its physical properties, such as its size and shape.

Most popular comminution laws are those proposed by Kick, Rittinger and Bond. Kick's Law (1885): Kick's law that can be applied to crushing states that "the work required for crushing a given quantity of material is constant for a given reduction ratio irrespective of its original size". Mathematically this law can be expressed as

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