﻿ how to calculate motor kw of ball mill

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The following equation is used to determine the power that wet grinding overflow ball mills should draw. For mills larger than 3.3 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 C.A. Rowland and D.M. Kjos @ Allis-Chalmers

More ### How To Calculate Rpm Of A Motor To Ball Mill

ball mill power cemnet. if we calculate the shaft power with 28% filling it comes to more than 2600 kw with 210 t grinding media. supplier has given a ball mill motor installed kw of 2600 only. n, mill speed, rpm. read more

More ### Ball Mill Design/Power Calculation

The basic parameters used in ball mill design (power calculations), rod mill or any tumbling mill sizing are; material to be ground, characteristics, Bond Work Index, bulk density, specific density, desired mill tonnage capacity DTPH, operating % solids or pulp density, feed size as F80 and maximum ‘chunk size’, product size as P80 and maximum and finally the type of circuit open/closed

More ### motor kw calculation for ball mill

· the power (in kw) required to turn a ball mill is approximated by: p = 0.285 d (1.073 j) m n where d is the internal diameter in metres, j is the fraction of the mill volume occupied by media, m is the total mass of media in the mill, in tonnes, and n is the mill speed, rpm. the actual motor energy consumption is 5 10% greater than this due

More ### how do calculate moter h.p require for ball mill

how do calculate moter hp require for ball mill. how do calculate moter h p require for ball mill. how to calculate motor kw of ball mill calculate capacity mineral ball mill calculate the efficiency of efficient ball mill,Cylindrical, needle, spherical and CARB toroidal roller bearings typically require at least a small operational clearance

More ### Ball Mill Operating Speed Mechanical Operations Solved

At what speed will the mill have to be run if the 100 mm balls are replaced by 50 mm balls, all the other conditions remaining the same? Calculations: The critical speed of ball mill is given by, where R = radius of ball mill; r = radius of ball. For R = 1000 mm and r = 50 mm, n c = 30.7 rpm. But the mill is operated at a speed of 15 rpm.

More ### Motor loads calculation Electrical Engineering Centre

Electrical motor loads are calculated from power in kW and full rated load in kW.Following is the formula how to calculate Motor loads. Example : We have 1 unit Induction Motor with 30 horsepower (hp),running with 34.9 amps for amperage load and 460 volts 3 phase and power factor value is 0.75 and motor efficiency is 85%

More ### BALL MILL POWER Page 1 of 2

Nov 12, 2013· ball mill power . dear experts. we have a ball mill in combi mode for cement grinding . roller press before the ball mill. the supplier has given 28% grinding media filling,with shaft power 2270 kw only. ball mill size is 4.4*11 m. grinding media size is max 30mm . it is a monochamber mill designed to grind the roller press product.

More ### TECHNICAL NOTES 8 GRINDING R. P. King

the mill is used primarily to lift the load (medium and charge). Additional power is required to keep the mill rotating. 8.1.3 Power drawn by ball, semi-autogenous and autogenous mills A simplified picture of the mill load is shown in Figure 8.3 Ad this can be used to establish the essential features of a model for mill

More ### PROCESS DIAGNOSTIC STUDIES FOR CEMENT MILL

Mill drive 3.58 5000 kW Diaphragm Double blind plate • Empty heights of both the chambers measured to calculate the ball charge, % filling and estimate the power production is obtained from a ball mill when the mill motor power is at a maximum and consequently the specific

More ### how do calculate moter h.p require for ball mill

how do calculate moter hp require for ball mill. how do calculate moter h p require for ball mill. how to calculate motor kw of ball mill calculate capacity mineral ball mill calculate the efficiency of efficient ball mill,Cylindrical, needle, spherical and CARB toroidal roller bearings typically require at least a small operational clearance

More ### Ball Mill Operating Speed Mechanical Operations Solved

At what speed will the mill have to be run if the 100 mm balls are replaced by 50 mm balls, all the other conditions remaining the same? Calculations: The critical speed of ball mill is given by, where R = radius of ball mill; r = radius of ball. For R = 1000 mm and r = 50 mm, n c = 30.7 rpm. But the mill is operated at a speed of 15 rpm.

More ### AMIT 135: Lesson 7 Ball Mills & Circuits Mining Mill

Ball Mill Operation. Ball mills ride on steel tires or supported on both ends by trunnions. Girth gears bolted to the shell drive the mill through a pinion shaft from a prime mover drive. The prime movers are usually synchronized motors. During rotation, a portion of the charge is lifted along the inside perimeter.

More ### calculates the grinding charge of a ball mill Mining

how to calculate motor kw of ball mill ? Grinding Mill China. Tubular Ball Mills ? Free download as PDF File (.pdf), text file (.txt) or read online for free. Jyoti Ceramic Industries Pvt. Ltd. Example To calculate grinding media charge for a 180 cm dia x 180 cm long batch type ball mill

More ### how to calculate rpm of a motor to ball mill

3. Ball mill and motor 3 3.1 Ball mill load characteristics 3.2 Motor torque defined 3.3 Differentiating characteristics 3.4 Synchronous motor 3.5 Slip ring induction motor 3.6 Torque efficiency and power factor 3.7 Motor torque pulsations 3.8 Construction and ventilation requirements 4. Chat Online; 3 Ways to Calculate RPMwikiHow

More ### Soft Starter motor ball mill 90 kw. YouTube

May 13, 2018· Starting a 6kV 3Ph 2,200 kW 1,000 rpm slip-ring motor for a cement ball mill Duration: 500 kW 1,000 rpm slip-ring motor under 800V

More ### PROCESS DIAGNOSTIC STUDIES FOR CEMENT MILL

Mill drive 3.58 5000 kW Diaphragm Double blind plate • Empty heights of both the chambers measured to calculate the ball charge, % filling and estimate the power production is obtained from a ball mill when the mill motor power is at a maximum and consequently the specific

More ### how to estimate the wear rate for Ball mill Page 1 of 10

Dec 08, 2009· Re: how to estimate the wear rate for Ball mill. Most practical way to by measuring empty height and calculating the % volumetric filling of grinding media.Alternative way to make track of mill main drive kW consumption reduction and add makeup charge according to the extent of fall in power consumption.

More ### 6kv 10kv Three Phase Synchronous Ball Mill Motor 1250kw

The collection is a type of big-sized 3-stage AC synchronous motor mainly utilized to drive mills in mines, which includes grate ball mill, rod mill and coal mill. Merchandise Title: Substantial Voltage Ball Mill Synchronous Motor Rated voltage: 3000V, 6000V, 10000V Potential variety: 320 kW ~ 5000kW Rated frequency: 50Hz, 60HZ Cooling strategy

More ### Making a Ball Mill YouTube

Mar 31, 2018· The milling of the materials is a very useful procedure in various domains in life as well as in the constructive domain. Click HERE to subscribe to Make it...

More ### How to calculate cement ball mill capacity Quora

Jan 30, 2018· You can ask your vendor who made this machine. It’s difficulty to calculate capacity of a machine or maximum capacity. It’s depend on a lot of parameters. But you

More ### How To Calculate Mill Power From Torque

How to Calculate Power From Torque eHow. Torque is the rotational force applied on an object, often measured in pound-feet, or lbf-ft. However, in order to calculate the power from torque, you also need to know the speed at which the motor is rotating, which is usually measured in

More ### how to calculate rpm of a motor to ball mill ME Mining

how to calculate rpm of a motor to ball mill standard rpm of a ball mill; Ball Mill Critical Speed Mineral Processing & Metallurgy. C.S. = 76.63 / 11^0.5 = 23.1 rpm. Ball and SAG Mills are driven in practice at a speed corresponding to 60-81% of the critical speed, the

More ### Cement mill notebook SlideShare

Jan 07, 2015· Raw mills usually operate at 72-74% critical speed and cement mills at 74-76%. 3.2 Calculation of the Critical Mill Speed: G: weight of a grinding ball in kg. w: Angular velocity of the mill tube in radial/second. w = 2*3.14*(n/60) Di: inside mill diameter in meter (effective mill diameter). n: Revolution per minute in rpm.

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