Although it was developed nearly 50 years ago, Bonds method is still useful for calculating necessary mill sizes and power consumption for ball and rod mills. This paper discusses the basic development of the Bond method, the determination of the efficiency correction factors based on mill dimensions and feed characteristics, and the application of the results to

Live Chat>### Gearless mill drives library.e.abb

the first GMD for a doublerotating ball mill in Carlin, Nevada, meeting a 160 °C heat challenge at the mill shell. GMDs have now been supplied for the world's largest autogenous (AG), semiautogenous (SAG) and ball mills, fulfilling the highest power requirements while operating under extreme environmental conditions. Focus on the future

Live ChatBall Mill Drives. One important advantage of the synchronous motor is the possible correcting of power factor within your operation, through its use. When using a synchronous motor we recommend having 200% starting torque, 120% to 130% pullin torque, and 225% pullout torque. These assume no greater than a 10% voltage drop at the motor terminals.

Live Chat>### MODELING THE SPECIFIC GRINDING ENERGY AND BALLMILL

2 MODELLING THE SPECIFIC GRINDING ENERGY AND BALLMILL SCALEUP Ballmill scale up (Bonds Law)Data: zBond work index w i zFeed D f and product d size (both 80% cumulative passing) Result: The specific grinding energy w Mill power draw P = wT, where T the mill capacity Mill dimensions (from Tables or charts)

Live ChatContinuous ball mill Power requirements? Continuous ball mill Power requirements? drFCraft (Chemical) (OP) 25 Sep 06 05:05. Does anyone have a reasonable Rule of thumb (or expression) for calculating the required power to crush coarse ore to

Live ChatFig. 2, taken from manufacturers bulletin, lists horsepower requirements and Rod Mill sizes. The calculated power input or horsepower in the above example is 316. Therefore, a 350hp motor is required and this in turn indicates that an 812 (8 x 12) Rod Mill is required.

Live ChatNow 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.

Live ChatBallRod Mills, based on 4 liners and capacity varying as 2.6 power of mill diameter, on the 5 size give 20 per cent increased capacity on the 4 size, 25 per cent and on the 3

Live ChatCalculate and Select Ball Mill Ball Size for Optimum Grinding. Mr. V. A. Olovskiy concludes: The ball sizing formulas from the literature on ball diameter selection do not take into consideration such as the target P90 . Based on his work, this formula can be derived for ball diameter sizing and selection: Dm <= 6...

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Although it was developed nearly 50 years ago, Bonds method is still useful for calculating necessary mill sizes and power consumption for ball and rod mills. This paper discusses the basic development of the Bond method, the determination of the efficiency correction factors based on mill dimensions and feed characteristics, and the application of the results to

Live Chat>### Gearless mill drives library.e.abb

the first GMD for a doublerotating ball mill in Carlin, Nevada, meeting a 160 °C heat challenge at the mill shell. GMDs have now been supplied for the world's largest autogenous (AG), semiautogenous (SAG) and ball mills, fulfilling the highest power requirements while operating under extreme environmental conditions. Focus on the future

Live ChatBall Mill Drives. One important advantage of the synchronous motor is the possible correcting of power factor within your operation, through its use. When using a synchronous motor we recommend having 200% starting torque, 120% to 130% pullin torque, and 225% pullout torque. These assume no greater than a 10% voltage drop at the motor terminals.

Live Chat>### MODELING THE SPECIFIC GRINDING ENERGY AND BALLMILL

2 MODELLING THE SPECIFIC GRINDING ENERGY AND BALLMILL SCALEUP Ballmill scale up (Bonds Law)Data: zBond work index w i zFeed D f and product d size (both 80% cumulative passing) Result: The specific grinding energy w Mill power draw P = wT, where T the mill capacity Mill dimensions (from Tables or charts)

Live ChatContinuous ball mill Power requirements? Continuous ball mill Power requirements? drFCraft (Chemical) (OP) 25 Sep 06 05:05. Does anyone have a reasonable Rule of thumb (or expression) for calculating the required power to crush coarse ore to

Live ChatFig. 2, taken from manufacturers bulletin, lists horsepower requirements and Rod Mill sizes. The calculated power input or horsepower in the above example is 316. Therefore, a 350hp motor is required and this in turn indicates that an 812 (8 x 12) Rod Mill is required.

Live ChatNow 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.

Live ChatBallRod Mills, based on 4 liners and capacity varying as 2.6 power of mill diameter, on the 5 size give 20 per cent increased capacity on the 4 size, 25 per cent and on the 3

Live ChatCalculate and Select Ball Mill Ball Size for Optimum Grinding. Mr. V. A. Olovskiy concludes: The ball sizing formulas from the literature on ball diameter selection do not take into consideration such as the target P90 . Based on his work, this formula can be derived for ball diameter sizing and selection: Dm <= 6...

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