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Welcome to the high-quality mining machines zone!
Processing capacity:49-364t/h
Feeding size:≤22mm
Appliable Materials: cement,silicate,new-type building material,copper mine,ore,cement clinker etc. All grindable materials, various metal ores, non-metallic ores, non-flammable and explosive materials
Ball mill is a horizontal grinding mill and key equipment for grinding materials, widely used in ore flotation processing plant and powder-making production line. According to different materials and discharging methods, there are dry ball mills and wet ball mills for choice. Dry ball mill is mainly for producing mineral powder used in cement, silicate product, new building material, refractory, fertilizer, black and non-ferrous metals and glass ceramic industry; Wet ball mill is a kind of continuous ball mill used in ore beneficiation plant. ...Learn More
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The bond ball mill grindability test is run in a laboratory until a circulating load of 250 is developed it provides the bond ball mill work index which expresses the resistance of material to
Bond ball mill grindability test the bond ball mill work index bbwi test is carried out in a standardised ball mill with a predefined media and ore charge the work index calculated from the testing can be used in the design and analysis of ball mill circuits
The basic parameters used in ball mill design power calculations rod mill or any tumbling mill sizing are material to be ground characteristics bond work index bulk density specific density desired mill tonnage capacity dtph operating solids or pulp density feed size as f80 and maximum chunk size product size as p80 and maximum and finally the type of circuit openclosed
12 700 m 1700 m models sgi ceet 1 2 the sag grindability index sgi test or alternatively the trademarked sag power index spi is a sagspecific test involving a small batch sag mill that is charged with a two kilogram ore sample and ground until the product has achieved an 80 passing size of
The approach combines the grindability factor in which the grinding of coarse particles is only considered with the floatability of the regrind mill feed and product using the corresponding
The gradation of grinding media is also an important factor in improving the efficiency of ball mills a reasonable gradation can only be calculated after analyzing the performance of the mill the property of the feed material and equipment layout in the closedcircuit grinding system
The bond ball mill work index bbwi test is carried out in a standardised ball mill with a predefined media and ore charge the work index calculated from the testing can be used in the design and analysis of ball mill circuits the test requires a minimum of 10kg of sample that has been stagecrushed to 100 passing size of 335 mm
You can calculate the grindability of different materials ground on your composite milling system simply from the total kwht consumed to grind to a particular fineness the only way to predict the grindability from the bond work index would be in the light of experience with your milling system
The higher the bond factor for the mill ie actual kwhtonne over bond predicted kwhtonne means the mill is less efficient ball mills are normally above 10 whilst vsms are less than 10 ratio
Jan 07 2015 the main influencing factor on the retention time is the mill length therefore the ratio of length to diameter ld of a mill is an important factor for an optimal design of the mill ld 30
Commercial grinding conditions for the test in a 05 m diameter sag mill in the 2009 database sag pinion energies to grind from f80 152 mm to t80 17 mm vary from 14 to 34 kwht and bond ball mill work index values vary from 6 to 24 kwt for the same ores project design tonnages varied from 200 to 150000 td sag mill sizes varied from 10 ft
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