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CRittinger Material constant in Rittinger’s law [kWh.m/ton] EBond Energy input described in Bond’s law [kWh/ton] ERittinger Energy input described in Rittinger’s
• 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 •
The equation for Rittinger’s Law can be written as: E = K R f c (1/L 2 1/L 1) Where: E=Energy, K R =Rittinger’s Constant, f c
Size reduction. Zeki Berk, in Food Process Engineering and Technology, 2009. 6.3.3 Energy consumption. As a rule, size reduction operations are heavy in energy consumption
Rittinger’s Law — The energy required for reduction in particle size of a solid is directly proportional to the increase in surface
Rittinger’s 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
PROPOSAL FOR A SOLOMONIC SETTLEMENT BETWEEN THE THEORIES OF VON RITTINGER, KICK, AND BONDThis paper presents a preliminary
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
The double jaw crusher is designed for crushing hard materials, also quarried materials, sand and gravel, and recycling. [4, 5] crusher [4] The tie rod and compression spring ensure that the
Impact of physical and mechanical properties of rocks on energy consumption of jaw crusher 475 Tosun A., Konak G., 201 4, Developm ent of a model estimating energy consumption values of
CRittinger Material constant in Rittinger’s law [kWh.m/ton] EBond Energy input described in Bond’s law [kWh/ton] ERittinger Energy input described in Rittinger’s law [kWh/ton] EKick Energy input described in Kick’s law [kWh/ton] FSingle Force response in single particle breakage [N] N Number of generations in optimization
The specific values of n as 2, 1 and 1.5 correspond to Rittinger’s, Kick’s and Bond’s laws respectively. Hukki Discrete element modeling for predicting breakage behavior and fracture energy of a single particle in a jaw crusher. Int. J. Miner. Process., 94 (2010), pp. 8391. View PDF View article View in Scopus Google Scholar
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
Required energy as per Rittinger’s law is 674.438 kJ/kg . Kick’ law: crusher with out further crushing to the feeder or on to the conveyor belt and large pieces which are .
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
Size Specific Energy (SSE) differs by relating the grinding energy to the quantity of new fines generated. For typical circuits that involve AG/SAG, HPGR or ball milling, the generation of 75 µm material (denoted as SSE75) is a suitable marker size with which to benchmark performance because it contains 80% of the surface area
PROPOSAL FOR A SOLOMONIC SETTLEMENT BETWEEN THE THEORIES OF VON RITTINGER, KICK, AND BONDThis paper presents a preliminary analysis of the fundamental relationship between the net energy used and the respective product s i z e throughout the entire range of s i z e s covered by crmshing and grinding,
In practical systems, when application of stress is less ideal, the net grinding energy is 100 to 1000 times greater than that associated with the new surface, that is, the efficiency of the process, on this basis, is between 0.1% and 1%. The relation of energy to surface area provides little information on the grinding process and does not
where F and P are some measure of feed and product size, usually diameters. Letting n = 2, 1, or 1.5 yields the three comminution laws due to von Rittinger, Kick, and Bond, respectively. As mentioned
Classification of materials by stressstrain diagram Chapter 8 Particle Size Reduction(Chapter 10) 8.1 Introduction Preparation of particles Size reduction (comminution, disintegration, breakdown): "3 wall" Growth (buildup): from
where KR is known as Rittinger's constant, and integration yields: The specific surface (surface area per unit mass) of particles is proportional to 1/L, so equation (2) says that lowering L for a mass of particles from 10 cm to 5 cm requires the same amount of energy as lowering that mass to 4.7 mm for a mass of 5 mm particles.
formed in place of Rittinger's surface area or Kick's particle volume. According to this hypothesis, rock breakage is produced by deforming the rock, commonly under pressure, until the resulting stress locally exceeds the breaking strength and a crack tip forms, usually on the surface. The surrounding strain energy then flows to the new crack
E = E (100/ L2) 1/2 [1 (1/ q1/2) ] (11.4) Bond defines the quantity E by this equation: L is measured in microns in eqn. (11.4) and so E is the amount of energy required to reduce unit mass of the material from
The theoretical energy required to break a solid to smaller particles is related to the energy required for the formation of new surfaces out of the originally available ones. The energy required to form a unit surface is termed “The specific surface energy, e s”. If the original specific surface area is A w 1 and that of the product is A
In practical systems, when application of stress is less ideal, the net grinding energy is 100 to 1000 times greater than that associated with the new surface, that is, the efficiency of the process, on this basis, is between 0.1% and 1%. The relation of energy to surface area provides little information on the grinding process and does not
PROPOSAL FOR A SOLOMONIC SETTLEMENT BETWEEN THE THEORIES OF VON RITTINGER, KICK, AND BONDThis paper presents a preliminary analysis of the fundamental relationship between the net energy used and the respective product s i z e throughout the entire range of s i z e s covered by crmshing and grinding,
@article{osti_889024, title = {MinetoMill Optimization of Aggregate Production}, author = {Adel, Greg and Kojovic, Toni and Thornton, Darren}, abstractNote = {MinetoMill optimization is a total systems approach to the reduction of energy and cost in mining and mineral processing operations. Developed at the Julius Krutschnitt Mineral
E adalah energy input C adalah konstanta n adalah eksponen. Untuk Rittinger n = 2, Kick n = 1 dan Bond n = 1,5. Setidaknya ada tiga persamaan dari tiga teori yang dapat digunakan untuk menghitung besar
What is the ratio of energy consumption calculated by kick's law to the energy consumption calculated by Rittinger's law in the new case? Select your answer A 0.58 B; Question: A material is crushed in a jaw crusher in which feed of an average size of 60mm is reduced to 10mm while consuming 15kW/kgs of energy. Now, if the same material is
PROCEDURE. Kept 100 gm of rice and charge it to series of sieves to get pregrinding size distribution. Continuous sieving for 10 minutes. Weigh the mass of rice retained on each sieve. Load the rice into ball mill along with metal balls. Run the ball mill for 30 minutes at a speed of 1 rpm. After 30 minutes take out rice powder from the ball mill.
