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Processing capacity:4-456t/h
Feeding size:≤16mm
Appliable Materials: silicate,refractory material,glass ceramics,copper mine,ore,construction rubbish 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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Energy efficiency solutions ball mill weg ball mills are widely used in the ceramic and mining industries where the grinding process requires strict grain size control weg developed an efficient solution for this appli ion providing a reduction in electric energy consumption of
Oct 25 2017 the following are factors that have been investigated and applied in conventional ball milling in order to maximize grinding efficiency a mill geometry and speed bond 1954 observed grinding efficiency to be a function of ball mill diameter and established empirical relationships for recommended media size and mill speed that take this factor into account as
Flexibility and productivity ball mills are widely used in the ceramic and mining industries where the grinding process requires strict grain size control weg developed an efficient solution for this application providing a reduction in electric energy consumption of up to 35 the solution consists of a highefficiency set w22 magnet ie4 super premium or w22 magnet ie5 ultra premium motor
Mar 23 2021 ball mill drive system with lowspeed sas motor without intermediate gearbox a prior to modernization b after modernization on the right 34 the nominal efficiency of the sas motors as declared by the manufacturer is be tween 90 and 93
The highest energy efficiency is observed in the case of the solution based on the permanent magnet motor however the drive system with the highspeed motor offers a
Jun 19 2015 a motor with around 1400 horse power is calculated needed for the designed task now we much select a ball mill that will draw this power 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 of feed from one size distribution the following shows how the size or select the
The degree of filling the mill with balls also influences productivity of the mill and milling efficiency with excessive filling the rising balls collide with falling ones generally filling the mill by balls must not exceed 3035 of its volume productivity of ball mills depends on drum diameter and the relation of drum diameter and length
The subject of this paper is a synchronous drive of grinding ball mills 4 mw 150 rpm 6 kv 50 hz on the base of pwm csi the system is installed at the
A wide variety of ball mill motor options are available to you such as singlephase threephase you can also choose from ccc ce ball mill motor as well as from totally enclosed waterproof and dripproof ball mill motor and whether ball mill motor is 208230 240 v or 115120 v
Ef3 diameter efficiency factor using the base mill diameter of 244 meters 8 inside liners the diameter efficiency factor can be calculated from the following ef3 244d024
Mar 26 2021 ball mill grinding efficiency is influenced by many factors ore grindability feed size grinding product size ball mill diameter and length ball mill working speed liner type steel ball loading system grinding concentration return sand ratio in closedcircuit grinding and feed rate ball mill to improve the ball mill grinding efficiency you must first understand the
Nov 01 2002 in terms of this concept the energy efficiency of the tumbling mill is as low as 1 or less for example lowrison 1974 reported that for a ball mill the theoretical energy for size reduction the free energy of the new surface produced during grinding is 06 of the total energy supplied to the mill setup
Numerous torque mill tests in addition to the growing plant data base compiled to date show that media charging near the size that provides highest ball mill grinding efficiency provides a degree of robustness with changing ore grindability it is rare that the media is incapable of breaking the largest particles as they become tougher
Larger ball and sag mills with higher installed power ratings relative to the mill diameter offer higher efficiency and throughput roundtheclock reliability and the opportunity to mine in remote areas this makes low ore grades economical to grind abb has delivered some of the worlds largest gmds 22 mw gmd for 28 ball mill
To increase efficiency designers of mining equipment tried to improve all the elements of ball mills such as the geared mechanical drives bearings their lubrication systems and electric motors moreover efforts have been made to optimize the size of the grinding bodies control the filling level of the drum with the material and
Therefore large feeding sizes will affect ball mill efficiency 3 mineral slurry density in wet grinding material pass time production efficiency and ball mill power are all influenced by mineral slurry density generally speaking the suitable density is close to 80 when feeding size is large and circulating load is high 4
When the proportion of pebbles in the mill charge was low up to 30 the larger pebbles wore away significantly faster than expected based on a constant surface wear rate this could be due to size segregation in the mill citation nkwanyana s and loveday b addition of pebbles to a ballmill to improve grinding efficiency
Vertimill has an excellent turndown ratio and can be operated at lower than installed power with less effect on grind efficiency than for example horizontal ball mills feed flowrate this parameter is used in conjunction with the feed density and motor power to
Tdmk motor highvoltage synchronous motor synchronous high voltage motor manufacturer supplier in china offering 6kv10kv three phase synchronous ball mill motor 1250kw 1875rpm 32p ykk series squirrel cage highvoltage threephase asynchronous motor 66kv11kv yks series airwater cooling highvoltage 3phase ac motor and so on
Dec 02 2019 the ball charge typically occupies around 3036 of the volume of the mill depending on the mill motor power and desired energy consumption and production rates
1 high efficiency and energy saving the efficiency of the motor reaches the firstlevel energy consumption ie4 standard and the power saving rate is above 20 2 large starting torque using vector control technology no impact on the power grid and ball mill during starting 3
The copper mountain ball mills are 7315 mm 24 feet in diameter and 12040 mm 395 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 8500 horsepower abb motors figure 3 the 24 x 395 ball mill
Mar 26 2020 the dedicated permanent magnet synchronous variablefrequency and variablespeed motor of xinhai ball mill machine adopt the variable frequency drive to change the operating frequency for adjusting the load speed thus improving the grinding efficiency of the ball mill machine and greatly reducing the invalid energy consumption
How to calculate ball mill efficiency popular education an alternative to increase the efficiency of ball mills icrepq monitoring electric motor ball mill efficiency 1 ball mills consist of a kind of rotating drum driven by an the difficulty of determining the fill level of the mill is read more online chat mill speed critical speed paul o abbe
Mar 23 2021 ball mill drive system with lowspeed sas motor without intermediate gearbox a prior to modernization b after modernization on the right 34 the nominal efficiency of the sas motors as declared by the manufacturer is be tween 90 and 93
Flexibility and productivity ball mills are widely used in the ceramic and mining industries where the grinding process requires strict grain size control weg developed an efficient solution for this application providing a reduction in electric energy consumption of up to 35 the solution consists of a highefficiency set w22 magnet ie4 super premium or w22 magnet ie5 ultra
Fullload tests on a planetary gear of a large ball mill and to determine the efficiency of the drive system including the motor losses a suitable object presented itself with the drive unit of a ball mill in the schwe1gern cement works of the rheinischen ka1ksteinwerke gmbh wli1frath in duisburghamborn transmitted power speeds
In a second approach comminution efficiency is based on comparing the energy to produce some size distribution parameter of the product from ball milling with that by singleparticle breakage for both materials dry ball milling efficiency was found to be in the range of 25
2 from the ball mill discharge size distribution calculate the 75 as 100 265 735 75 3 calculate the cse as the average 807 735 2 771 75 in this example the ball mill circuit classification system efficiency is 771 per cent at 75 s this means that
Power ratings relative to the mill diameter offer higher efficiency and throughput roundtheclock reliability and the opportunity to mine in remote areas this makes low ore grades economical to grind abb has delivered some of the worlds largest gmds 22 mw gmd for 28 ball mill 28 mw gmd for a 40 sag mill
Numerous torque mill tests in addition to the growing plant data base compiled to date show that media charging near the size that provides highest ball mill grinding efficiency provides a degree of robustness with changing ore grindability it is rare that the media is incapable of breaking the largest particles as they become tougher
Gearless ball mill operation the mill is powered by a synchronous motor rated 8750 hp 145 rpm 10pf 1900 volts 3 phase 484 hz 10 service factor class b insulationthe motor is mounted outside the mill discharge end bearing with the rotor overhung on a torque tube extension of the mill
When the ball mill cylinder rotates the grinding body acts on the cylinder liner due to the action of inertia and centrifugal force and friction it is carried away by the cylinder when it is brought to a certain height it is thrown off due to its own gravity the falling abrasive body crushes the material in the cylinder like a projectile 3the material is uniformly fed into the first chamber of the mill
The critical speed of the ball mill is the speed at which the centrifugal force is equal to the gravity on the inner surface of the mill so that no ball falls from its position onto the mill shell ball mill machines usually operates at 6575 of critical speed what is the ball mill price
When the proportion of pebbles in the mill charge was low up to 30 the larger pebbles wore away significantly faster than expected based on a constant surface wear rate this could be due to size segregation in the mill citation nkwanyana s and loveday b addition of pebbles to a ballmill to improve grinding efficiency
Figure 7 abb synchronous motor on ball mill 1 the drive requirements for the copper mountain mills are as follows rated power 2 x 6340 kw 2 x 8500 hp sag mill rated motor speed 204 rpm max motor speed 214 rpm ball mill rated motor speed 195 rpm max motor speed 209 rpm starting torque 150 for 15 s
Mar 26 2020 the dedicated permanent magnet synchronous variablefrequency and variablespeed motor of xinhai ball mill machine adopt the variable frequency drive to change the operating frequency for adjusting the load speed thus improving the grinding efficiency of the ball mill machine and greatly reducing the invalid energy consumption
Sand grinder high efficiency ball mill with motor powe and speed reducer us 750065000 set 1 set min order 6 yrs shicheng gaoxuan bearing bush co ltd 867 32 2 contact supplier the ball mill is used to grind many kinds of mine and other materials or to select the mine there are ladder liner and ripple liner and different
Energy efficiency solutions ball mill weg ball mills are widely used in the ceramic and mining industries where the grinding process requires strict grain size control weg developed an efficient solution for this appli ion providing a reduction in electric energy consumption of
Oct 25 2017 the following are factors that have been investigated and applied in conventional ball milling in order to maximize grinding efficiency a mill geometry and speed bond 1954 observed grinding efficiency to be a function of ball mill diameter and established empirical relationships for recommended media size and mill speed that take this factor into account as
Flexibility and productivity ball mills are widely used in the ceramic and mining industries where the grinding process requires strict grain size control weg developed an efficient solution for this application providing a reduction in electric energy consumption of up to 35 the solution consists of a highefficiency set w22 magnet ie4 super premium or w22 magnet ie5 ultra premium motor
Mar 23 2021 ball mill drive system with lowspeed sas motor without intermediate gearbox a prior to modernization b after modernization on the right 34 the nominal efficiency of the sas motors as declared by the manufacturer is be tween 90 and 93
The highest energy efficiency is observed in the case of the solution based on the permanent magnet motor however the drive system with the highspeed motor offers a
Jun 19 2015 a motor with around 1400 horse power is calculated needed for the designed task now we much select a ball mill that will draw this power 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 of feed from one size distribution the following shows how the size or select the
The degree of filling the mill with balls also influences productivity of the mill and milling efficiency with excessive filling the rising balls collide with falling ones generally filling the mill by balls must not exceed 3035 of its volume productivity of ball mills depends on drum diameter and the relation of drum diameter and length
The subject of this paper is a synchronous drive of grinding ball mills 4 mw 150 rpm 6 kv 50 hz on the base of pwm csi the system is installed at the
A wide variety of ball mill motor options are available to you such as singlephase threephase you can also choose from ccc ce ball mill motor as well as from totally enclosed waterproof and dripproof ball mill motor and whether ball mill motor is 208230 240 v or 115120 v
Ef3 diameter efficiency factor using the base mill diameter of 244 meters 8 inside liners the diameter efficiency factor can be calculated from the following ef3 244d024
Ball mills are widely used in the ceramic and mining industries where the grinding process requires strict grain size control weg developed an efficient solution for this application providing a reduction in electric energy consumption of up to 35 the solution consists of a highefficiency set w22 magnet ie4 super premium or w22 magnet
Ball mill motor drive efficiency sushiyoup ball mill motor drive schemesminig machine the mill used for this comparison is a 4 4meter diameter by 13 6 meter long ball mill with a 5000 hp drive motor it is designed for approximately 90 s ton per hour this type twocompartment mill is a state oftheart shell supported cement finish mill the torque and time requirements of the mill
The dedicated permanent magnet synchronous variablefrequency and variablespeed motor of xinhai ball mill machine adopt the variable frequency drive to change the operating frequency for adjusting the load speed thus improving the grinding efficiency of the ball mill machine and greatly reducing the invalid energy consumption
Jul 04 2012 ball mill is widely used in refractory plant cement plant glass plant and metallurgy plant etcball mill adopts roll bearingits energy saving is reduced 30 than the overflow ordinary ball mill low noise and high output efficiency make ball mill environmental protectiongreat wall company introduces the overall ball mill frameit is
Therefore large feeding sizes will affect ball mill efficiency 3 mineral slurry density in wet grinding material pass time production efficiency and ball mill power are all influenced by mineral slurry density generally speaking the suitable density is close to 80 when feeding size is large and circulating load is high 4
An electric motor operated rotary drum type grinding mill is operated at optimal efficiency by detecting and analyzing the motor current the power signals are converted by signal processing equipment for presentation as pictorial display representations of mill operating conditions at a variety of motor current levels to permit unskilled operators to understand the current
Vertimill has an excellent turndown ratio and can be operated at lower than installed power with less effect on grind efficiency than for example horizontal ball mills feed flowrate this parameter is used in conjunction with the feed density and motor power to
Jan 12 2021 domel motor with ferrite magnets is highly efficient over a wide range of speeds and loads in the range from 2550 kw or 80160 nm at 3000 rpm the motor vfd has higher than 94 efficiency thanks to unique design motor reach high power factor which in some case could eliminate usage of oversized vfd 22
The mill motor gross power registered during the vertical mill factor assumes a higher efficiency associated with vtms wills and finch 2016 the use of ball mills for fine grinding is
Synchronous machines can be found wherever there is a demand for highly efficient costeffective dependable machines they are frequently used for rolling ball and sag mills chippers mixers pulp refiners pumps fans and compressor reprocating and centrifical drives
The copper mountain ball mills are 7315 mm 24 feet in diameter and 12040 mm 395 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 8500 horsepower abb motors figure 3 the 24 x 395 ball mill
Ballmills are used widely for secondary grinding loveday 2010 reported on laboratory tests in which small pebbles 725 mm were used in various proportions with balls the optimum proportion of pebbles by volume was found to be about 25 substantial savings in power and ball consumption were achieved with no loss in grinding capacity
When the proportion of pebbles in the mill charge was low up to 30 the larger pebbles wore away significantly faster than expected based on a constant surface wear rate this could be due to size segregation in the mill citation nkwanyana s and loveday b addition of pebbles to a ballmill to improve grinding efficiency
Mar 18 2021 the grinding effect of the ball mill directly affects the grinding efficiency and the output of the ball mill in addition to considering the size of the ball mill internal structure of the ball mill product fineness requirements and other factors should also consider the characteristics of the grinding material such as grindability particle size etc
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