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ball mill 40 poles motor drawing catechistenopleiding.nl (PDF) Grinding in Ball Mills: Modeling and Process Control. sag mill vs ball mill. · sag mill vs ball mill Posted at:Febru[,SAG mills are essentially autogenous mills, but utilize grinding balls to aid in grinding like in a ball mill,The gearless motor (also called wraparound motor or ring motor) is a very large synchronous motor The

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Rotor Induction Motor, Dual Pinion Mill Drives, SAG Mill, AG Mill, Ball Mill technology drastically increased the limits of power draw for milling. . use of high pole synchronous motors for grinding mill applications was . In June 2014, zenith and Siemens completed commissioning of two (2) 24' x 40' ball mills, each with a. Get Price

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ball mill 40 poles motor drawing. PDF Grinding in Ball Mills Modeling and Process Control sag mill vs ball mill · sag mill vs ball mill Posted atFebru SAG mills are essentially autogenous mills but utilize grinding balls to aid in grinding like in a ball mill The gearless motor also called wraparound motor or ring motor is a very large synchronous motor The poles of the motor are directly

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A methodology to evaluate ball mill filling level based on torque .. and comparative studies of power draw between different mills [36]. The mill is driven by a three phase, four pole, 400 V, 50 Hz, 2.2 kW, induction motor.

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ball mill 40 poles motor drawing. WEG's e-Technical Catalog. WEG, the largest industrial electric motor manufacturer in the Americas is pleased to offer its customers our brand new e-Technical Catalog. Our objective is to help you find the exact product and its related information through different search methods. You will have the ability to

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ball mill 40 poles motor drawing. PDF Grinding in Ball Mills Modeling and Process Control sag mill vs ball mill · sag mill vs ball mill Posted atFebru SAG mills are essentially autogenous mills but utilize grinding balls to aid in grinding like in a ball mill The gearless motor also called wraparound motor or ring motor is a very large synchronous motor The poles of the motor are directly

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Ball mill 40 poles motor drawing.Simple drawing for centrifugal ball mill crusher.As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable.This ball mill and rod mill power draw model is based on a torque model and empirical measurements made by the equipment company for use by its.

Ball 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 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

Gearless mill drives Grinding ABB

Our GMD eliminates all mechanical components of a conventional mill drive system, such as ring-gear, pinion, gearbox, coupling, motor shaft and motor bearings: By mounting the rotor poles directly onto the mill, the mill itself becomes the rotor of the gearless motor.

TECHNICAL AND COMMERCIAL BENEFITS OF GEARLESS MILL

the motor rotor. The concept to drive the mill this way is relatively simple using the mill body as motor rotor and mounting the poles there. As a result the motor does not have a separate (motor) rotor and thus no separate (motor) bearings. The number of poles is based on the required speed of the mill.

(PDF) DESIGN AND FABRICATION OF MINI BALL MILL-

mini ball mill, a ball mill base is design and fabricate to withstand the weight of the rotating ja r, motor and gears. After a few hou rs, stop the mini ball mill and the powder

(PDF) Evaluation of synchronous motors on grinding mills

Ball mills and SAG mills, with h igher low speed torques, reduced current draw and increased efficiencies. A smaller drive was used and using a four-or six-pole motor with stepup gear. For

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Application: Ball Mill Equipment: 1 x 44000kW 30 pole 6600 volt Synchronous Motor Location: Kalgoorlie, Western Australia Ernest Henry Mine Application: 1 x 11000kW SAG Mill driven by Dual 5500kW motors, 1 x 5500kW Ball Mill Equipment: 3 x 5500kW 6 pole 11000 volt Wound Rotor Induction Motors Location: Cloncurry, Queensland

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

Mill power draw models SAGMILLING.COM

Mill Power Draw Models. The mill power draw models are used to predict how much power will be consumed by a particular type of mill, mill geometry and set of mill operating conditions. This power is transferred to the ore and used to predict the throughput when combined with the specific energy consumption models.

Selecting Inching Drives for Mill and Kiln Applications

Typical motor speeds are either 4 or 6 pole, i.e. 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 required by the process. A six pole motor will be larger but will have a

Gearless mill drives Grinding ABB

Our GMD eliminates all mechanical components of a conventional mill drive system, such as ring-gear, pinion, gearbox, coupling, motor shaft and motor bearings: By mounting the rotor poles directly onto the mill, the mill itself becomes the rotor of the gearless motor.

TECHNICAL AND COMMERCIAL BENEFITS OF GEARLESS MILL

the motor rotor. The concept to drive the mill this way is relatively simple using the mill body as motor rotor and mounting the poles there. As a result the motor does not have a separate (motor) rotor and thus no separate (motor) bearings. The number of poles is based on the required speed of the mill.

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The asset is a vertically-mounted, belt driven grinding mill, as shown in Figure 1. The drive spindle has three (3) bearings: two (2) cylindrical roller bearings and one (1) ball bearing. The mill is being belt driven by a 100 hp, two-pole motor. The mill normally operates at 3,150 rpm.

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Mill Power Draw Models. The mill power draw models are used to predict how much power will be consumed by a particular type of mill, mill geometry and set of mill operating conditions. This power is transferred to the ore and used to predict the throughput when combined with the specific energy consumption models.

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Typical motor speeds are either 4 or 6 pole, i.e. 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 required by the process. A six pole motor will be larger but will have a beneficial

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Jul 31, 2013· The drive spindle has three (3) bearings: two (2) cylindrical roller bearings and one (1) ball bearing. The mill is being belt driven by a 100 hp, two-pole motor. The mill normally operates at 3,150 rpm. 1.Outboard Motor Bearing Legend 2.Inboard Motor Bearing 3.Inboard Mill Bearing* 4.Outboard Mill Bearing * Bearing that was failing.

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Application: Ball Mill Equipment: 1 x 44000kW 30 pole 6600 volt Synchronous Motor Location: Kalgoorlie, Western Australia Ernest Henry Mine Application: 1 x 11000kW SAG Mill driven by Dual 5500kW motors, 1 x 5500kW Ball Mill Equipment: 3 x 5500kW 6 pole 11000 volt Wound Rotor Induction Motors Location: Cloncurry, Queensland

What's causing your high motor current? Plant Services

Feb 23, 2018· Before drawing any conclusion, check the line-to-line voltage. If it is more than 10% above the motor rated voltage, it could be the cause of the high full-load speed and possibly the high current. An open rotor can cause a pulsation in the output torque of a motor as the open rotor bar passes under each phase of the motor winding.

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

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In a ring-motor drive, Figure 4, a ringshaped motor encircles the mill and drives it directly without gears. The motor consists of rotating rotor elements (poles) that are bolted to the mill shell

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from wet ball mill shall be discharged to mill overflow tank. Grinding water for the limestone ball mill shall be ratio controlled by the signal of gravimetric feeder to maintain specified solid content at outlet of mill hydro cyclone. Limestone slurry from mill overflow tank is pumped via mill circuit pump to hydro cyclone for classification

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The poles of the gearless or synchronous motor (also called wrap-around motor or ring motor) are directly installed on the pole flange of the mill shell, turning the mill body into the rotor. The stator is then wrapped around the mill. The gearless motor is fed by a cycloconverter which has a rated output frequency of around 5 Hz for the GMD drive.

Mineral Processing Toshiba International Corporation

Application: Ball Mill Equipment: 1 x 44000kW 30 pole 6600 volt Synchronous Motor Location: Kalgoorlie, Western Australia Ernest Henry Mine Application: 1 x 11000kW SAG Mill driven by Dual 5500kW motors, 1 x 5500kW Ball Mill Equipment: 3 x 5500kW 6 pole 11000 volt Wound Rotor Induction Motors Location: Cloncurry, Queensland

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I am aware that the synchronous motors on ball mills are often used to correct the facility PF. The biggest mill I've seen was around 30,000hp with the field poles mounted around the outside of the mill. It was over 40 poles. Driven by a large cycloconverter. Wish I could remember the details better.

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Mar 09, 2016· A motor with 2 or 4 pole pairs (1500 or 750 rpm @ 50 Hz) with pulley drive seems to be a straightforward solution. Or any other kind of geared induction motor. Mar 3, 2016

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Ball Mill Motor Power Draw Sizing and Design Formula Mineral Mar 31, 2016 Kwb, Kilowatts/(metric tonne of balls). Vp, Fraction of mill volume loaded with balls, kW Drawn by Mill at Pinion. fCs, Fraction of critical speed. Read More. WEG Provides Innovation in Ball Mill

Gearless mill drives library.e.abb

The poles of the gearless or synchronous motor (also called wrap-around motor or ring motor) are directly installed on the pole flange of the mill shell, turning the mill body into the rotor. The stator is then wrapped around the mill. The gearless motor is fed by a cycloconverter which has a rated output frequency of around 5 Hz for the GMD drive.

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Inventory ID: 6C-HM01. 3 Units UNUSED FLSMIDTH 26’ x 43' Dual Pinion Ball Mill with 2 ABB 9,000 kW (12,069 HP) Motors w/ ABB VFD for Total Power of 18,000 kW (24,138 HP)

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Electric Machinery Company (WEM) Minneapolis USA References: Induction Motors TESORO Los Angeles Refinery USA Stiff shaft 10.000HP, 4 Poles, 3PH / 60 Hz / 11.6 kV Valero Refining Co. San Antonio TX USA 20.000HP, 2 Poles, 3PH / 60 Hz / 13. 2 kV Turbo Generator 2 poles Mondi Paper South Africa 56.500 kVA, 2 Poles, 3PH / 50 Hz / 11.0 kV Dresser-Rand Arizona Public

TECHNICAL SPECIFICATION FOR LIMESTONE GRINDING

from wet ball mill shall be discharged to mill overflow tank. Grinding water for the limestone ball mill shall be ratio controlled by the signal of gravimetric feeder to maintain specified solid content at outlet of mill hydro cyclone. Limestone slurry from mill overflow tank is pumped via mill circuit pump to hydro cyclone for classification

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Mar 09, 2014· We have an 1200 HP Synchronous motor with brushes. We have been experiencing exciter problems quite often when we have to restart or after a disturbance within our mill. The current problem we are experiencing is the mill was offline due to low tonnage through the mill

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The motor power draw required to turn a mill from rest to the operating speed includes the energy required for the initial starting torque and mechanical arrangements to rotate the mill. It is generally accepted that practical mill power (PM ) is a function of mill capacity and diameter, i.e.,P M = Mill Constant * (Mill Diameter ) n

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The poles of stage mill (no ball mill after the SAG mill) and has a diameter and length of 32’, driven by a 16.5 MW GMD from ABB. TECO-Westinghouse Motor Company synchronous motors and generators provide superior value in terms of ball and sag mills, chippers, mixers, pulp refiners

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