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# power to dribe ball mill to find diameter d ball load

• ## bondformula for the grinding balls size calculation

Oct 19, 2017 · In our example, the grinding balls diameter needed to load into the mill must be equal to 40-50 mm. Let’s sum up. The grinding balls diameter determined by the Bond formula has a recommendatory character and serves as a starting point for calculating the necessary proportion grinding media feeding a new mill

• ## amit 135: lesson 7 ball mills& circuits miningmill

The number of lifters generally can be determined by the rule-of-thumb: Number of Lifters = 3nD for double wave liners. = 6.6D for single wave liners where D is the mill diameter (m). Double wave liners are more suitable for ball sizes less than 60 mm. Otherwise, single wave is preferred

• ## ball mill design/power calculation

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

• ## sagmillgrinding circuit design

The grinding circuit comprises one 8530 mm diameter x 3650 mm semi-autogenous mill driven by a 3954 kW variable speed dc motor, and one 5030 mm diameter x 8340 mm secondary ball mill driven by a 3730 kW synchronous motor

• ## ball mill design/powercalculation

Apr 08, 2018 · 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 matching mill required to draw this power …

• May 24, 2011 · General chip load for a drill is 1.6% of its diameter per flute on 2 flute drills. Divide the end mill diameter by 120 for an end mill chip load when using a full diameter "slot" cut. Then the finish cut can be made by another pass on the same numbers. Divide the end mill by 80 for a roughing cut using near 66% of the end mill diameter

• ## power required to drive a ball mill with a particular ball

Power required to drive a ball mill with a particular ball load is proportional to (where, D = diameter of ball mill ) 1) 1/D

• ## amit 135: lesson 7 ball mills & circuits mining mill

The number of lifters generally can be determined by the rule-of-thumb: Number of Lifters = 3nD for double wave liners. = 6.6D for single wave liners where D is the mill diameter (m). Double wave liners are more suitable for ball sizes less than 60 mm. Otherwise, single wave is preferred

• ## bond formula for the grinding balls size calculation

Oct 19, 2017 · In our example, the grinding balls diameter needed to load into the mill must be equal to 40-50 mm. Let’s sum up. The grinding balls diameter determined by the Bond formula has a recommendatory character and serves as a starting point for calculating the necessary proportion grinding media feeding a new mill

• ## chip load questions - practical machinist

May 24, 2011 · General chip load for a drill is 1.6% of its diameter per flute on 2 flute drills. Divide the end mill diameter by 120 for an end mill chip load when using a full diameter "slot" cut. Then the finish cut can be made by another pass on the same numbers. Divide the end mill by 80 for a roughing cut using near 66% of the end mill diameter

• ## analysis ofball mill grinding operation using mill power

Mar 01, 2014 · Malghan has presented data on dry grinding of 8/10 mesh limestone in 12.7, 25.4 and 38.1 cm diameter ball mills. As shown in Fig. 15, Fig. 16, data for three sets of operating conditions were analyzed. These three sets included two values each of mill speed (N: 0.6 and 0.7), ball load (J: 0.3 and 0.5) and ball diameter (d: 25.4 and 50.8 mm

• ## mill powerfor conical (hardinge) typeball mills

Jan 01, 1992 · Mill power (3) where * X */L * + (2R )3( 1 )[(1.25R /0)0.1 -( 0.5-~ )4]), D * * 0.5-J 1-D1/2R 1. 25R /D (4) J < 0.45 T D --0-----­ _i_ a R Fig.l Definition ofsymbolism for a mill with conical end sections (internal dimensions) In these equations mp is net mill power; J is the fractional filling level by the ball bed in the cylindrical portion