crushing energy consumption coal kick bond index,SIZE REDUCTIONcost of power is a major expense in size reduction equipment, so the factors . crushing efficiency η. C . Bond (1952). Kick . should be the power consumption if the capacity is increased to 12 ton/h .. The work index for line is 12.74. kW . Rittinger's law and (b) Kick's law, calculate the power required for the second.crushing energy consumption coal kick bond index,size reduction paradox - Franklin Millerenergy supplied appears as increased surface energy in the solids. ... For coarse crushing Kick's law has been favored: W = 1n R . is the Bond work index. Limitations of . have been demonstrated as in the grinding of coal samples (2) . The laws of size reduction in general use today . The Rettinger and Kick. Laws are.
ComminutionMore than half of this energy is consumed in the crushing and grinding of minerals,. Page 3. 3 one-quarter in the production of cement, one-eighth in coal, and one-eighth in agricultural products. . For n = 1 the solution corresponds to the Kick's model. . generally called Bond Work Index given in kilowatt-hours per ton.crushing energy consumption coal kick bond index,11 Crushing and classification - Particle Technologywhere Wi is the Bond Work Index, again in energy per unit mass terms. The index is . In Summary, Kick's law is better for larger particles and Rittinger's for fine.John Frank
More than half of this energy is consumed in the crushing and grinding of minerals,. Page 3. 3 one-quarter in the production of cement, one-eighth in coal, and one-eighth in agricultural products. . For n = 1 the solution corresponds to the Kick's model. . generally called Bond Work Index given in kilowatt-hours per ton.
Hardgrove Grindability Index (HGI). Biomass. Coal. Energy consumption . Rittinger's theory that ''the work done in grinding is proportional to the new surface .. Kick's  and Bond's  theories of comminution which state that: Fig. 1.
Jan 5, 2011 . The results showed that the specific energy consumption of biomass comminution and . is mainly used for co-firing with coal or combustion for domes- tic heating .. with the Rittinger, Bond and Kick material milling laws, in which energy . where Wi is Bond's index corresponding the strength of the mate-.
reduction and related energy consumption by grindability test methods, which .. From the grinding test the Bond ball mill work index Wi is determined (Bond, 1961): .. Gladstone Authority's Coal by a Twin Pendulum Apparatus, Advanced Powder .. range (crushing, >1 cm, Kick, 1885), B) middle range (grinding, 0.1-1 cm,.
4.6 Rapid determination of the Bond Work Index . .. Grindability tests aim to estimate the energy consumption of grinding and to give parameters for the ... theories of comminution are usable on a specific range of particle size, Kick's law on the ... Coal. 12,99. 12,33. -5,08. Silica. 11,93. 11,49. -3,69. Fluorite. 7,4. 7,28. -1,62.
The standard work indices of Kick, Bond and Von Rittinger each work . A tremendous amount of energy is consumed during crushing and grinding, much . (cement, coal, stone, copper, iron ore, phosphate, sand and gravel, clay, titanium, etc.).
Kick: E=-Z&In. Bond: - -. (lb). UC) where E is the net energy supplied to the grind, x, is some .. done on use of batch grinding data for various materials in various .. 15.00. 20_00. Merzmann cement clinker. Western Kentucky coal. Bagga [17 I. Bagga [li ]. PSO . between the Bond work index and the coeffi- cients a and b in.
(Von Rittinger, Kick and Bond theories) in order to define a method for characterising wood chip and . Energy consumption during wood milling depends on three main factors: the material moisture . producers to convert some of their pulverized coal or gas . the distribution), the indices 1 and 2 of x (x1, x2) indicate that x.
Jan 21, 2014 . a Department of Energy Systems Engineering, Seoul National . hammer mill better than the models based on Bond's and Kick's theories. . sively used mills for coal crushing, and it provides high-performance . teristics of LRC by swing hammer mills for use in clean coal technology. ... size interval index.
Enormous quantities of energy are consumed in size reduction operations. . To estimate the energy required for the grinding operation. 3. To analyze the.
automated mills ranging from minerals like for instance ores and coal, . this energy is consumed in the crushing and grinding of minerals, one-quarter in the .. Kick's law (9) states that for geometrically similar size reduction, the energy required per unit . which 80% passes, and Wi is the so-called —Bond work index“.
Aug 2, 2016 . parameters of the required energy consumption for the comminution processes. For . strength, hardness, and Bond work index; this implies that . processes including crushing and grinding by using the rock characteristics ... Kick  concerns the volumetric change as the key components for energy.
Apr 1, 2004 . 186. B6. World Coal Consumption by Region, High Economic Growth Case, 1990-2025. .. web site .eia.doe/oiaf/ieo/index. .. “The Great Car Crush,” Far Eastern Economic Review .. Asia Won't Yet Kick the Coal Habit,” Petroleum .. bonds, and payments for many of BE's back-end obli-.
Coal pulverisers' performance optimisation is an important process in power generation plants. . ability, abrasive indices and calorific value of coal. The effect of low .. MILL POWER CONSUMPTION AND HEAT BALANCE EXCEL ... Rittinger, Bond and Kick came up with theoretical and empirical energy size reduction.
crushing or grinding is much higher than the calculated theoretical power. Finally, it is . Actually, W = Wth /η, where η is an efficiency term in the range of 0.01 to. 0.02. . Table (4.1): Bond's work index for some materials. Material. Work index. Bauxite. 8.78. Cement clinker. 13.45. Clay. 6.30. Coal. 13.00 . 2- Using Kick's law:.
There are many ways to determine different production costs in the industry but . investigated process of crushing and screening of different mineral and .. In short mining is extraction and beneficiation of single or multiple minerals or coal from Ore. ... kinetic energy is then calculated and the Impact Work Index can be.
The SAG Power Index test (SPI) is a tool for forecasting autogenous mil! performance. Much effort has .. method, still in use today, is flawed because the Bond test was developed as a model for bail mil! .. crushing sizes, Kick's relationship was appropriate. ... otherwise (such as in the coal seem example described). 38.
There were attempts to improve the efficiency of grinding energy . process but with the help of theories such as Kick's, Rittinger's, and Bond's laws, it has . studies on dry grinding of hard materials such as coal and line and first .. in terms of crushing strength may not be a reliable indicator while the actual size.
coal in Polish energy industry (power plants produce 9433 MW of electrical power from brown coal, .. Total power consumption of grinding process is higher, when . The value of this index arranges different coals according to the “easiness” with which they are . Kick's theory specifies the energy needed for the fragmen-.