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
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Ball Mill MotorPower Sizing Calculation Previous Next View Larger Image A Total Apparent Volumetric Charge Filling – including balls and excess slurry on top of the ball charge plus the interstitial voids in between the balls – expressed as a percentage of the net internal mill volume inside liners B Overflow Discharge Mills
Read More +Ball Mill PowerDesign Calculation Example 2 In Example it was determined that a 1400 HP wet grinding ball mill was required to grind 100 TPH of material with a Bond Work Index of 15 guess what mineral type it is from 80 passing ¼ inch to 80 passing 100 mesh in closed circuit Mill sizing method
Read More +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 of feed from one size distribution The
Read More +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
Read More +The standard inching drive motor is a NEMA or IEC frame typically foot mounted to a motor scoop or base plate Typical motor speeds are either 4 or 6 pole ie 1750 rpm or 1170 rpm for 60 Hz applications and 1450 rpm or 970 rpm for 50 Hz applications The advantage of using a four pole motor allows for a smaller footprint and a smaller brake if
Read More +More balls with small size results in fine powder As a thumb rule powder to be milled should be taken as 25 of total ball weight If the quantity of charge is very less then milling balls will
Read More +Please find below two calculators for sizing mills using the Bond and Rowland methods Ball mill sizing Calculator for ball mills in a single stage circuit Rod ball mill sizing Calculator for rod mills as first stage of the circuit and ball mills as second stage of the circuit
Read More +ball mill motor sizing 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
Read More +Ball Mill Motor Power Draw Sizing and Design Formula 20191116 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
Read More +Please find below two calculators for sizing mills using the Bond and Rowland methods Ball mill sizing Calculator for ball mills in a single stage circuit Rod ball mill sizing Calculator for rod mills as first stage of the circuit and ball mills as second stage of the circuit
Read More +This explains why changing media sizing may produce no effect on circuit performance 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
Read More +The design of a ball mill can vary significantly depending on the size the equipment used to load the starting material feeders and the system for discharging the output product The size of a mill is usually characterized by the ratio “length to diameter” and this ratio most frequently varies from 05 to 35 The
Read More +The standard inching drive motor is a NEMA or IEC frame typically foot mounted to a motor scoop or base plate Typical motor speeds are either 4 or 6 pole ie 1750 rpm or 1170 rpm for 60 Hz applications and 1450 rpm or 970 rpm for 50 Hz applications The advantage of using a four pole motor allows for a smaller footprint and a smaller brake if
Read More +More balls with small size results in fine powder As a thumb rule powder to be milled should be taken as 25 of total ball weight If the quantity of charge is very less then milling balls will
Read More +Mar 29 2019 · Let the mill run for a few hours It takes time to grind up your chemical into a fine dust Because the ball mill is quite loud store it in a closet or the basement while it is running Check on it periodically to make sure everything is running smoothly After a
Read More +Motor Sizing Calculations There are three factors to calculate when sizing a motor Moment of Inertia Torque and Speed Moment of Inertia Moment of inertia is the measure of an objects resistance to changes in its rotation rate When an object is just sitting without any motion the moment of inertia is 0
Read More +26 x 14 ft 79 x 42 m SAG Mill 6300 HP 4700 kW Motor 26 x 14 ft 79 x 42 m SAG Mill 6300 HP 4700 kW Motor Variable speed drive available at extra cost Mill includes main drive motor Slip Ring 6300 HP liquid resistance starter includes variable speed d
Read More +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 of feed from one size distribution The
Read More +We can provide all elements of a mill drive system as a fully optimised solution to suit your process exactly or individual mill drive gearboxes girth gears pinions and couplings as required Designed to deliver exceptional levels of performance and value David Brown Santasalo ball mill drives are optimised for primary and secondary
Read More +Ringmotor drives were first used in cement industry mills and later in mining industry applications The largest ringmotor driven mill in the world is a 36ft diam 16000hp SAG mill that
Read More +Office Add: Kexue Revenue, High and New Technology Industrial Development Zone, Zhengzhou, China
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