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[email protected]Pdf size reduction by grinding methodspdf size reduction by grinding methodsBall mills are used for wet 38000 hp motor a sag mill with a 44 diameter and a grinding material at smaller particle sizes and can be used after ball mills in a grin ding process, ball mill motor sizing
Get PriceBall mill drive motor choices iv starting torque and time considerations the mill used for this comparison is a 4 meter diameter by 136 meter long ball mill with a 5000 hp drive motor it is designed for approximately 90 per hour this type twocompartment mill is a get price
READ MOREDec 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 of feed from one size distribution the
READ MOREBall mill motorpower sizing calculation know more 17 mar 2017 motor sizing determination leftpanel 0 mill power kw kilowatts balls fraction of the total mill power draw contributed by the ball
READ MOREAug 10 2020 the ball mill will still work the motor will just rotate in the opposite direction use caution when using the power source if youre unsure about the electronics ask a friend who has more expertise before using it for a cylinder drum of the size used above about 4060 balls should be sufficient
READ MOREBall mill motor power draw sizing and design formula 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
READ MORERate at each screen size is calculated from a torquemill test as in the example that follows torque mill solids load during test 1125 kg 248 lb of ball mill feed sample from plant survey sample is reconstituted with water to be the same percent solids as the plant ball mill discharge mill speed 352 rpm 65 percent of critical speed
READ MOREAlso the sizes used are just what i used in my mill and are here to give you a general idea motor have an open when searching for this it is definitely the most expensive and most important part in your ball mill but if you look around enough you can surely find one for free the motor
READ MOREThe mill product can either be finished size ready for processing or an intermediate size ready for final grinding in a rod mill ball mill or pebble mill agsag mills can accomplish the same size reduction work as two or three stages of crushing and screening a rod mill and some or all of the work of a ball mill
READ MOREAbb ringgeared mill drive solutions offer a modular concept that provides a common drive control platform for induction and synchronous motors in single and dualpinion configurations these drives are wellsuited for all type of mills and ball mill applications and are able to cover the power range up to
READ MOREFor 2 chambers mill all these calculators are reliable but users need a certain experience to implement results of these calculators sizing equipments and mills optimization are the job of material suppliers and experienced engineering offices
READ MOREA ball mill also known as pebble mill or tumbling mill is a milling machine that consists of a hallow cylinder containing balls mounted on a metallic frame such that it can be rotated along its longitudinal axis the balls which could be of different diameter occupy 30 50 of the mill volume and its size depends on the feed and mill size
READ MORESemiautogenous mills or sag mills as they are often called can accomplish the same size reduction work as two or three stages of crushing and screening often used in grinding at modern mineral processing plants sag mills reduce the material directly to the desired final size or prepare it for the following grinding stages
READ MOREBall mill application and design paul o abbe ball mills are simple in design consisting of horizontal slow rotating vessels half filled with grinding media of to 15 the particles to be milled are trapped between the grinding media or balls and are reduced in size by the actions of impact and attrition
READ MORERetsch is the world leading manufacturer of laboratory ball mills and offers the perfect product for each application the high energy ball mill e max and mm 500 were developed for grinding with the highest energy input the innovative design of both the mills and the grinding jars allows for continuous grinding down to the nano range in the shortest amount of time with only minor warming
READ MOREBall mill retsch powerful grinding and homogenization a ball mill can grind and homogenize small sample volumes down to the nano range the emax is an entirely new type of ball mill for high energy input ball mills are among the most variable and effective tools when it comes to size
READ MOREBall mill from mainly recycled parts 11 steps a motor i got one from a old dryer that is rated for around 1600 rpm which is good for this application22quotx4quot amount will vary with the size of the s4 and belts2 size will also varyi was able to salvage mine from a old bearings4 you may be able to get some from old junk or buy the cheaply5
READ MOREIf large particle sizes are retrieved from the ball mill the process is known as a coarse grind if smaller particle sizes are retrieved from the ball mill the process is known as a fine grind note if hard pebbles are used instead of steel balls the mill is referred to as a pebble mill
READ MOREBall mill drive motor choices the mill used for this comparison is a 44meter diameter by 136 meter long ball mill with a 5000 hp drive motor it is designed for approximately 90 per hour this type twocompartment mill is a state oftheart shell supported cement finish mill the torque and time requirements of the mill with the ball
READ MOREBall mill motor sizing from south africa ask for help with questions offer answers give and receive ideas solutions opinions hello and welcome to 911 metallurgist mineral processingmetallurgy community discussion forums please join me and other mineral processing industry professionals in a tball mill motor sizing from south africa
READ MOREAlso the sizes used are just what i used in my mill and are here to give you a general idea motor have an open when searching for this it is definitely the most expensive and most important part in your ball mill but if you look around enough you can surely find one for free the motor
READ MOREBall mills are used for wet 38000 hp motor a sag mill with a 44 diameter and a grinding material at smaller particle sizes and can be used after ball mills in a grin ding process
READ MORETo understand how th e load torquespeed characteristic effects motor sizing it is important to the subject of this paper is a synchronous drive of grinding ball mills 4 mw 150 rpm 6 kv 50
READ MOREAnd with the decreased grain size the necessary ball size also decreases olejnik 2010 2011 for each grain size there is an optimal ball size trumic et al 2007 the bigger ball in relation to the optimal one will have an excess energy and consequently the smaller ball mill has less energy necessary for grinding in both
READ MOREThe gearbox between motor ball mill had been recently rebuilt two identical ball mills were in place at the plant 1a 1b these machines are used to pulverize or crush lime into small particles dust that is then made into a slurry and injected into the flue gases to reduce pollution
READ MOREThe laboratory ball mill was designed for grinding limestone meaning that the work index required for the specific power calculation was assumed to be the work index of limestone which is 116 kwht with a specific gravity of 26 gcm 3 or 2600 kgm 3 the feed size f 80 of the ball mill was assumed to be 2 mm 2000 microns
Ball mills give a controlled final grind and produce flotation feed of a uniform size ball mills tumble iron or steel balls with the ore the balls are initially 510 cm diameter but gradually wear away as grinding of the ore proceeds the feed to ball mills dry basis is typically 75 vol ore and 25 steel
Ball mill motor power draw sizing and design formula mineral mar 31 2016 kwb kilowattsmetric tonne of balls vp fraction of mill volume loaded with balls kw drawn by mill at pinion fcs fraction of critical speed read more ball mill motorpower sizing calculation
Page 1 of 2 ball mill motors posted in tools and tooling hey guysmy harbor freight mill jar has become lopsided so it is time to upgrade a little bit i am thinking i want to build my trouble is there are tons of different manufacturers and brands of motors out there which one should i getthe design i am aiming for is a pully driven system with an idler bar and the capability to