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Construction of a SAG mill with the stator and

2022-6-16 Fig. 1 shows the construction of a SAG mill [2]. It consists of a rotating hollow cylinder of about 12 m in diameter. Two sets of bearings in ring-shaped structures support the cylinder to let itget price

Sag Mill Motor Complete Stator

SAG mill breakdowns are costly events for producers. As an example, early in 2006, Cia. Minera Do a Ines de Collahuasi had to make temporary repairs on the drive on the largest and newest of its three SAG mills at the Collahuasi copper mine in northern Chile, and then in mid-January 2007, finally began full replacement of the motor stator onget price

sag mill motor stator

2021-2-15 · speed of the mill. Thus, the SAG mill motor has 72 poles and the ball mill motors have 56 poles. • Excitation transformer and excitation converter with full wave control. The excitation transformer is fed at 4.16 kV and its secondary is connected to the 6-pulse excitation converter.get price

SAG Mill Components Mineral Processing & Metallurgy

2018-4-18 These studies have been important in a coordinated optimization program for mill heads, shells and trunnion bearings. Mill Shells require a similar but more complicated program for stress and deflection analysis. Often, depending on the load concentration and mill length, special shell designs are required. An example is shown on Figure 5.get price

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SAG mills (semi-autogenous grinding mills) TON Outotec

Features. Semi-autogenous TON Outotec SAG mills, as they are often called, can accomplish the same size reduction work as two or three stages of crushing and screening. Often used in grinding at modern mineral processing plants, SAG mills reduce the material directly to the desired final size or prepare it for the following grinding stages.get price

SAG Mill Grinding Circuit Design Mineral Processing

2016-6-6 AG and SAG mills are now the primary unit operation for the majority of large grinding circuits, and form the basis for a variety of circuit configurations. SAG circuits are common in the industry based on: and one 5030 mm diameter x 8340 mm secondary ball mill driven by a 3730 kW synchronous motor. Four 1067 x 2400 mm vibrating feedersget price

Codelco Andina changes the main motors of its ball mills

2020-2-24 We took on the challenge and completed the change-out of 7500 and 8500 HP SAG grinding ball mill motors with Coldelco Andina in two months. assembly of the WEG motor stator, threading of the WEG motor stator-rotor as well as the unthreading of the WH stator-rotor, over the course of 2 months. During the engineering process, it was importantget price

Sag Mill Syncronis Motor high axial vibration non drive

2014-11-1 On site we have a Sag Mill Driven by a 5500KW Motor. We have a vibration issue right across the Mill. The highest vibration is 30mm/sec RMS axial on the motor n "Loose stator coils in synchronous motors will generate fairly high vibration at Coil Pass Frequency (CPF) which equals the number of stator coils x RPM (# Stator Coils = Poles xget price

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Gearless mill drives ABB

2021-2-16 • 28 MW GMD for a 40' SAG mill • 28 MW GMD for 42' SAG mill Whether it is size or an installation at the highest altitude (4600 m.a.s.l.), ABB’s GMDs are well positioned to contribute to the building of larger and ever more powerful mills. — Leading the gearless mill drive evolution The ABB gearless mill drive (GMD) is the most powerfulget price

(PDF) Evaluation of synchronous motors on grinding mills

The subject of this paper is a synchronous drive of grinding ball mills 4 MW, 150 rpm, 6 kV, 50 Hz on the base of PWM CSI. The system is installed at the concentrating plant of Norilsknickel inget price

Sag Mill Motor Complete Stator

2021-10-1 Sag Mill Motor Complete Stator. sag mill motor complete stator. Gearless mill drivesGrinding 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.get price

Sag Mill Motor Complete Stator schildervdstelt2.nl

2021-8-6 Sag Mill Motor Complete Stator. gearless mill drive sales rev up to meet demand,in the plant, grinding mills are spun at vertigo-inducing production speeds by air gap between the motor stator and rotor (the mill body itself), have evolved into with this announcement, abb noted that it had won contracts for a total of 11 .gearless mill drives grinding,abb's gearless mill drive get price

sag mill motor complete stator

2018-5-10 · Mills and GMDs Maarten van de Vijfeijken* looks at large, larger and the largest units in grinding ore efficiency and the availability of the mill. The gearless motor is fed by a cyclo-converter which lets the operator easily vary the mill’s the stator of a 40’ SAG mill is over 21 m high OCTOBER 2010 International Mining 31get price

ABB Completes On-Site SAG Mill Motor Rewind at

2020-4-8 ABB Completes On-Site SAG Mill Motor Rewind at Escondida Copper, Wins Service Contract at Goro Nickel Project. ABB recently announced that rewinding of a SAG mill stator at Chile’s Minera Escondida—the world’s largest copper mine—was successfully completed, marking the first time in 40 years of gearless mill drive (GMD) history that the company has get price

Modeling and Evaluation of Cycloconverter-Fed Two

2014-12-10 Abstract: Typical drive configurations of high-capacity SAG mills use a two-stator-winding vector-controlled synchronous motor, with a 30° shift between the two windings, fed by a two-secondary delta-delta-wye power transformer and two six-pulse cycloconverters. This paper presents and evaluates three different modeling options for the SAG mill drive.get price

Uneven SAG Mill Drive Power Draw Grinding &

2022-6-12 There are two GE motors for SAG mill but unfortunately sometimes current draw exceeds more than 300 A in one of them and makes SAG mill shut down. I was not sure about process issues. it may well be that one of the motors has insulation problems on windings in either rotor or stator, or other issues that are influencing its performanceget price

Gearless mill drives Grinding ABB

Go gearless to meet your business objetives by exceeding standard availability targets in your grinding operations. ABB’s GMD is the most powerful mill drive system in the market to power semiautogenous (SAG), ball and autogenous (AG) mills, This ’workhorse’ for grinding operations combines a robust, service-friendly and fit for purposeget price

Literature Review: Gearless Motor Failures A Mill

2014-9-10 The Collahuasi motor was for a 40 ft SAG mill. The Antamina 38 ft SAG mill was also driven by an ABB motor and the hanger plates had not failed on that machine after several years of operation. Similarly, the Sossego motor for the 38 ft SAG mill had not failed. It too had an ABB motor and it had operated longer than the Collahuasi motor.get price

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The Siemens 42ft gearless mill drive, still an evolutionary

2022-5-25 • Structural stress impact of the magnetic pull to the stator after energizing the drive • Motor behavior during normal operation with a loaded mill The result is the design of a Gearless Mill Drive motor for a 42ft Grinding Mill providing up get price

Difference Between Stator & Rotor Circuit Globe

The significant difference between the rotor and the stator is that the rotor is the rotating part of the motor whereas the stator is the stationary part of the motor. The other differences between the stator and rotor are shown below in the get price

sag mill motor complete stator newhopenursing.co.za

sag mill motor complete stator; Gearless mill drives Grinding ABB. ABBs GMD is the most powerful mill drive system in the market to power semiautogenous SAG, ball and autogenous AG mills, This workhorse for grindingbines a robust, service friendly and fit for purpose design to provide highest throughput, reliability .get price

Sag Mill Motor Complete Stator

Sag Mill Motor Complete Stator schildervdstelt2.nl

Sag Mill Motor Complete Stator

SAG Mill Feed The Beast WikiThe SAG Mill is a block added by the EnderIO mod A machine similar to a Pulverizer or a is used to process resources to produce dust It accepts energy in the form of Redstone Flux or Minecraft Joule with an internal buffer of 100 000 RF and consumption of 20 RF per energy storage capacity and processing speed can beget price

for stator sag mill sady-mazowsza.pl

Currently, the SAG mill expert control system is operational roughly 90% of the time with excellent results. Below is a very basic overview of the strategies and typical results we have seen. Objectives. Protect the SAG mill; Maintain smooth and stable operation of the SAG mill (SAG mill optimization) Get Priceget price

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1 x TON SAG Mill & Siemens Motor

2019-2-25 1 x TON SAG Mill & Siemens Motor For Sale/Re-Assignment Mill Details Type of Mill TON SAG Mill Mill Dimensions 11,582 mm x 7,759 mm (38’ x 26’) (D x L) Default Mill Speed 7.5-8.0 RPM Mill Speed 7.56-10.08 RPM Liners Excluded Mill Drive Motor Type Wrap Around (included) Mill Drive Motor Size 19,400 KW (26,016 hp) Variable Speed Drive Yes Max.get price

motors of sag mill otolato.pl

Design of the 40 foot SAG Mill Installed at the Cadia com The SAG mill cost 12 2 million whilst the SAG mill motor cost A 8 8 for geotechnical purposes ring motor sag mill ballclay in ring motor sag mill gaursyamunacity org in ring motor sag mill Siemens expands mining portfolio to include The 42 foot ring motor is the centerpiece of the get price

Grinding Mill Foundations

2014-9-23 In the mid-2000s, it was sometimes necessary to increase the stiffness for ring motor pier connections to avoid stator vibration due to very soft soils. The El Teniente SAG mill foundations had to be stiffened as did the stator frame to ensure there would be no vibration because the soil properties were very poor.get price

What’s the Difference Between SAG Mill and Ball Mill

2019-11-26 The biggest characteristic of the sag mill is that the crushing ratio is large. The particle size of the materials to be ground is 300 ~ 400mm, sometimes even larger, and the minimum particle size of the materials to be discharged can reach 0.1 mm. The calculation shows that the crushing ratio can reach 3000 ~ 4000, while the ball mill’sget price

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Failure Prediction of Induction Motors: A Case Study

condition monitoring needs of the SAG Mill motor and other such equipment in the plant. Keywords: SAG mill induction motor, feed-forward neural network, multilayer perceptron. I. I. ntroduction . amang Gold Mine, a subsidiary of Goldfields International is a world class mining operation consisting of a 25 MTPA open pit mining and aget price