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ball mill design/power calculation,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 open/closed you are.ball mill design/power calculation,if p is less than 80% passing 70 microns, power consumption will be. ball mill power calculation example. a wet grinding ball mill in closed circuit is to.ball mill parameter selection & calculation,1 calculation of ball mill capacity. the production capacity of the ball mill is determined by the amount of material required to be ground, and it must have a certain margin when designing and selecting. there are many factors affecting the production capacity of the ball mill, in addition to the nature of the material (grain size, hardness, density, temperature and humidity), the degree of grinding.Φ 3.6 ×4.5m ball mill for a copper mine ...,iron ore. 4500kw. 320t/h. 191m3. 13.8r/min. 335t. ≤18. 90%. hengin can provide citic, sinoma, nhi and other brand grinding mill,ball mill, sag mill ,ag mill,rod mill and.how to size a ball mill -design calculator & formula,in general, therefore, the required mill power is calculated using the following equation where n is the number of efficiency factors, efi, used and fo is the feed rate of new ore to the mill. the power calculated from equation 2 can be looked up in published tables (rowland and kjos, 1978) and the correct mill size and type can be selected..ball mill-fote machinery,ball mill. beneficiation equipment. the wet type ball mill, which can greatly improve the grinding efficiency with uniform particles and does not produce dust. processing materials: iron ore, copper ore, gold ore, limestone, calcite, barite, dolomite, potassium feldspar, marble, talcum, gypsum. 0.65–615t/h production. ≤25mm max feeding size.energy efficiency analysis of copper ore ball mill drive,abstract: milling is among the most energy-consuming technological stages of copper ore processing. it is performed in mills, which are machines of high rotational masses. the start of a mill ﬁlled to capacity requires appropriate solutions that mitigate the overloading. one method for increasing the energy efﬁciency of ball mills is to.ball mill_henan hongji mine machinery co., ltd.,ball mill. application： it is widely used in cement, silicate products, new building materials, refractories, fertilizers, black and non-ferrous metal beneficiation and glass and ceramics industries. material： iron ore, slag, copper ore, silver ore, galena and other materials. the ball mill is the key equipment to crush the material after.
the copper mountain ball mills are 7315 mm [24 feet] in diameter and 12040 mm [39.5 feet] long. they are overflow discharge ball mills with inside diameters of 7315 mm [24 feet] and grinding lengths of 11887 mm [39 feet]. each ball mill is also driven by two 8,500 horsepower abb motors. figure 3 - the 24’ x 39.5’ ball mill
the general form of the equation, or ce model, for the relative capacity of a closed ball mill circuit as function of circulating load and classification efficiency (magdalinovic, 1991) is: 1 1 c1 1.5 c2 e2 kq q2 1 c2 1.5 c1 1 (1) q1 e1 where: kq relative capacity of the milling circuit (fraction) q1, q2 milling circuit capacity under different
wet ball mill = kg kwh = 0.16(a i-0.015) 0.33; dry ball mill = kg / kwh = 0.023a i 0.5; replacement ball size. rowland and kjos proposed the use of their equation for the determination of the initial and replacement media size. azzaroni (1981) and dunn (1989) recommended the use of the following expression for the size of the makeup media:
circuit included an increase in the sag mill ball charge from 8% to 10% v/v; an increase in the mill ball inside of the sabc circuit is typically based on calculations from similar circuits in both domestic the mineral processing plant of the wushan copper mine has a production capacity
in the original concentrator, material with a copper grade over 0.38% is loaded onto trucks and sent to the milling circuit, where giant rotating crushers reduce the size of the ore to approximately onehalf of an inch. the ore is then sent to the ball mills, which grind it to the consistency of fine powder.
milling sa g 2 balls 4 project scope includes the addition of a second sag mill and a fourth ball mill to increase throughput capacity expanded 38% from current 94ktpd to 130ktpd indicative capital cost: us$1.3 billion (100%) over 4,900 construction workers on project description
mill (g), : each ball volume (m3), : supposed ball filling percentage, ar: ball abrasion rate in the mill. if above calculation were done again for = 2%, total ball abrasion will get 60.96, finally. the second one is not acceptable, because the balls went out from the mill which have diameter less than 12000 (12000 is trommel screen opening).
consider the flow that an ore body makes through the mine. based on the density of the rock body being blasted, the drilling pattern, and a whole host of other factors, there will be a range of rock sizes included in the run of mine (rom) ore. smaller pieces will fall through the rock crusher and make their way directly to the sag mill or ball
ball mills 【capacity】 from 0.2-90 t/h 【advantages】designed for long service life, minimum maintenance, can grind and homogenize mineral ores down to the nano range, large volume of processing capacity 【max feeding size】 <25mm 【discharge size】0.075-0.4mm 【types】overflow ball mills, grate discharge ball mills 【service】 24hrs quotation, custom made parts, processing flow
antamina compania minera antamina s.a. peru project: one sag mill and 3 ball mill drive systems capacity: sag mill 1000 t/h ball mills 1000 t/h consultant: bechtel, usa mill builder: ffe minerals, usa mill size: sag mill 38 feet/11,58 m ball mills 24 feet/7,32 m ore processed: copper/zinc drive rating: sag mill 20,1 mw, 9,23 rpm ball mills 11,2 mw, 11,38 rpm
ball mill and rod mill are suitable for different materials. 1. selection by material's hardness. ball mill has a strong adaptation of material, and it is suitable for grinding hard materials, such as slag, iron ore, copper ore, etc. rod mill is suitable for grinding brittle material, such as rare metals. 2.
copper ore processing grinding ball mill machine price, wet ceramic ball mill specification. us $2580 / set. 1 set (min. order) china made large capacity froth flotation machine for copper ore flotation machine. us $800.00-$12000 / set. 1 set (min. order) cn zhengzhou huahong machinery equipment co., ltd.
1 crushing: the jaw crusher is used to crush the copper ores to the proper size. some copper mines will be added to the impact crusher for further crushing. 2 grinding: send the crushed copper ores evenly to the ball mill for further grinding until -0.074 mm particle size accounting for 70%. then, grade them by a spiral classifier and send the non-standard ores back to the ball mill for
the copper concentrator was designed and built by fluor at a cost of $50 million. the concentrator has a capacity to process 33,000 tons of ore per day. the grinding mills convert the ore into approximately 230,000 tons annually of copper concentrate and 1,800 tons of molybdenum concentrate.
mining process for copper – series ii. 2016-05-18 xinhai views (247) if you want to know more information, like quotation, products, solutions, etc., please contact us online. chat message. the second stage is grinding and flotation process. due to a different distribution of fine particle size of useful and gangue minerals in copper mining
ore milled and gold, copper & gold equivalent production by year8 proposed plant expansion1 the study proposes the construction of a new secondary crushing circuit for the concentrator 1 milling circuit including a crusher with a secondary screening feed, a pebble crusher and a 1.5 megawatt (mw) ball mill.
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