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Inquiry Online Leave a MessageDec 12 2016 the ball mill motor power requirement calculated above as 1400 hp is the power that must be applied at the mill drive in order to grind the tonnage
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
Jan 30 2018 jxsc ball mill manufacturer has industrial ball mill and small ball mill for sale power range 185800kw during the production process the ball grinding machine may be called cement mill limestone ball mill sand mill coal mill pebble mill rotary ball mill wet grinding mill etc jxsc ball mills are designed for high capacity long service good quality match metso ball mill
Oct 19 2015 the following equation is used to determine the power that wet grinding overflow ball mills should draw for mills larger than 33 meters 10 feet diameter inside liners the top size of the balls used affects the power drawn by the mill this is called the ball size factor s rod and ball mills by ca rowland and dm kjos allischalmers
Since for the ball mill design we are using 80 passing the required value of c2 for the ball mill will be equal to120 c3 is the correction factor for mill diameter and is given as
Ball mills are rated by power rather than capacity today the largest ball mill in operation is 853 m diameter and 1341 m long with a corresponding motor power of 22 mw toromocho private communications view chapter purchase book manufacture of portland cement
Wet ball mill kg kwh 016a i0015 033 dry ball mill kg kwh 0023a i 05 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
Ball mill power draw predicted from the denver slide rule kw 0 200 400 600 calculated ballmill power draw from the m odel derived kw data compared line yx fig 2 comparison of the ball mill power draw from the denver slide rule and the proposed model dashed line corresponds to yx
Power required to drive a ball mill with a particular ball load is proportional to where d diameter of ball mill 1 which of the following gives the work required for size reduction of coal to 200 mesh in a ball mill most accurately it is a type of mill
Mill type overview three types of mill design are common the overflow discharge mill is best suited for fine grinding to 75 106 microns the diaphram or grate discharge mill keeps coarse particles within the mill for additional grinding and typically used for grinds to 150 250 microns the centerperiphery discharge mill has feed reporting from both ends and the product discharges
Specifications power 3 hp 30 hp sigma kneader 5 kg450 kg size available 20 x 20 40 kg up to 7x 7 4500 kg we are engaged in the manufacture and supply of a wide assortment of industrial ball mill pharmaceutical industry that are used for grinding the crushed materials
Power required to drive a ball mill with a particular ball load is proportional to where d diameter of ball mill a d b 1d c d 25 d 1d 25
And reduces their size power required for this process ranges from 75 to 18000kw 100 to 24000 hp in either single or dualmotor configurations in this type of application the pinion is mounted on pillow blocks driven by a lowspeed motor or a motor and enclosed gear drive the gear is mounted on the mill using a flange bolted con
Techno designs is a ball mill manufacturer with an experience in designing engineering and manufacturing over 150 grinding mills we deliver qualityapproved batch type ball mills with sizes in the range of 15m x 2m and 3m x 75m and power ranging from 50 hp to over 1000hp our grinding mills have been tried and tested with a wide variety of minerals such as dolomite calcium carbonate
The feed to ball mills dry basis is typically 75 vol ore and 25 steel the ball mill is operated in closed circuit with a particlesize measurement device and sizecontrol cyclones the cyclones send correctsize material on to flotation and direct oversize material back to the ball mill for further grinding
Three types of tests are available for mill power determinations in most cases one of two bench scale tests is adequate first a jar mill grindability test requires a 5 lb 2 kg sample and produces a direct measured specific energy net hphrt to grind from the design feed size to the required product size
Mill power draw models the mill power draw models are used to predict how much power will be consumed by a particular type of mill mill geometry and set of mill operating conditions this power is transferred to the ore and used to predict the throughput when combined with the specific energy consumption models
The starting point for ball mill media and solids charging generally starts as follows 50 media charge assuming 26 void space between spherical balls nonspherical irregularly shaped and mixedsize media will increase or decrease the free space 50 x 26 13 free space add to this another 1015 above the ball charge for total of 23 to 25 product loading
The capacity of each unit size is relative to the required power input for the intended grind however mills have been operated with throughputs exceeding 500 mtph lower capital cost vertimill requires a simple and small foundation which means less floor space is required
Capacity 750 th a vibrating feeder a jaw crusher a ball mill a spiral classifier a magnetic seperator a dryer a concentrator in the actual production process this beneficiation production line is very stable and safe in operation it has high processing efficiency and a favorable price
However in pure energy efficiency terms the benefit of grinding power reduction is countered by the very high power required by mill fans in addition the absence of the heat generated in a ball mill and the high volume of air required by the vertical mill have required the provision of waste heat from cooler exhausts andor auxiliary
Nsi equipments pvt ltd offering ball millclosed circuit type at rs 260000unit in meerut uttar pradesh read about company get
Of a model for mill power the torque required to turn the mill is given by torque t mcgdc t f 89 where mc is the total mass of the charge in the mill and tf is the torque required to overcome friction power 2 nt 810 for mills of different diameter but running at the same fraction of critical speed and having the same fractional filling net power 2 nmcdc nc mc dc 1 d 05 m ld2 mdm ld25 m 811
Dec 12 2016 the ball mill motor power requirement calculated above as 1400 hp is the power that must be applied at the mill drive in order to grind the tonnage
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
Jan 30 2018 jxsc ball mill manufacturer has industrial ball mill and small ball mill for sale power range 185800kw during the production process the ball grinding machine may be called cement mill limestone ball mill sand mill coal mill pebble mill rotary ball mill wet grinding mill etc jxsc ball mills are designed for high capacity long service good quality match metso ball mill
Oct 19 2015 the following equation is used to determine the power that wet grinding overflow ball mills should draw for mills larger than 33 meters 10 feet diameter inside liners the top size of the balls used affects the power drawn by the mill this is called the ball size factor s rod and ball mills by ca rowland and dm kjos allischalmers
Since for the ball mill design we are using 80 passing the required value of c2 for the ball mill will be equal to120 c3 is the correction factor for mill diameter and is given as
Ball mills are rated by power rather than capacity today the largest ball mill in operation is 853 m diameter and 1341 m long with a corresponding motor power of 22 mw toromocho private communications view chapter purchase book manufacture of portland cement
Wet ball mill kg kwh 016a i0015 033 dry ball mill kg kwh 0023a i 05 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
Ball mill power draw predicted from the denver slide rule kw 0 200 400 600 calculated ballmill power draw from the m odel derived kw data compared line yx fig 2 comparison of the ball mill power draw from the denver slide rule and the proposed model dashed line corresponds to yx
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