since for the ball mill design we are using 80% passing, the required value of c2 for the ball mill will be equal to1.20. c3 is the correction factor for mill diameter and is given as; ��3 = 2.44 �� 0.2 3 however, it is important to note that c3 =0.914 vessel used in producing the ball mill was got from a
you need to use the formula q = av. q = flow rate, a = area, v = velocity. a needs to be calculated. for example if a fluid is flowing through a pipe of diameter 10 cm then its radius = 5 cm.
a bond ball mill work index is then performed on the mill product for the design of sag-ball mill circuits. this is important because it was found that there was a 1 1.5 kwh/t higher ball mill work index if the 3.35 mm ball mill test feed size is obtained by sag mill grinding compared with crushing.
ball mills normally operate with an approximate ball charge of 30%. ball mills are characterized by their smaller comparatively diameter and longer length, and often have a length 1.5 to 2.5 times the diameter. the feed is at one end of the cylinder and the discharge is at the other.
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>crushing strength of a cubic meter concrete , metre of concrete for a mix corresponding to crushing strength 280 kg/cm 2 at 28 , cement content 400 kg / m , chat now; m concrete crushing strength in kg cm
the answer is calculated by multiplying the volume of the ball by the density of the material. for example, calculate the weight of a two inch diameter lead ball: 4.1887 times the density of lead, which is 0.409 pounds per cubic inch, gives a weight of 1.713 pounds.
twelve 7 x 24 compeb mills grinding cement clinker to a product of 1750 surface area, 90% passing a 200 mesh screen. an 8 x 7 diaphragm type ball mill grinding 0.5″ copper ore to 96% passing 65 mesh. a 7 x 12 pebble mill grinding high grade silica for use in the manufacture of abrasives and ceramics.
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these results show that the specific surface energy of soda-lime glass by comminution in our instrumented torque-ball mill is 107, 145, and 275 j/m 2 after grinding for 1, 16 and 275 min, respectively. the net power required to operate the mill with the ball load of 33 kg and material charge of 3 kg was 0.07 kw.
a ball mill consists of a hollow cylindrical chamber fig. 6.2 which rotates about a horizontal axis, and the chamber is partially filled with small balls made of steel, tungsten carbide, zirconia, agate, alumina, or silicon nitride having diameter generally 10 mm. the inner surface area of the chamber is lined with an abrasion-resistant material like manganese, steel, or rubber.