sag mill motors

SAG Milling in Australia -Revised Submission

Developments in SAG Mill Design and Operation Over the last few years, SAG mill manufacturing technology has advanced rapidly. The bounds of mill size have been pushed from two directions. Firstly, the advent of ring motors has removed the constraint applied by the power that a single pinion gear was able to transmit.

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Sentinel: Siemens Gearless Mill Drives - YouTube

The mills at Sentinel in Zambia are amongst the world's biggest, with 2 off 40 ft SAG mills complete with 28 MW drives, and 2 off 28 foot-ball mills with 22 ...

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Ball Mills for sale, Pebble Mills, Rod Mills, SAG Mill ...

SAG Mill: GM130: 24 Ft dia x 12ft SAG Mill, Allis Chalmers, with a 3,500hp Synchronous Motor, 4,000volts, Philadelphia Gear Box 720 RPM in and 84.2 RPM out, ratio 8.546:1 : 1: SAG Mill: GM135: 32 Ft dia x 16.5ft SAG Mill, Hardinge, with a 8,500hp Motor : NEED SOME BALL MILLS?, SEND YOUR REQUEST AND WE WILL FIND IT FOR YOU [email protected]

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Mining - Grinding and Processing | WEG

Designed to drive and control the speed of the medium voltage motors coupled to the SAG/AG, ball and HPGR mills with single or double pinion, the MVW01 frequency drive uses state of the art technology through a multilevel structure with medium voltage IGBTs, reducing the harmonic currents on the motor to extremely low levels.

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tungsten ore ncentrating,typical load factor for sag mill ...

About Us. SBM is a leading and pioneering enterprise with the most advanced international level in R&D, manufacturing and selling of large-scale crushing & screening plants, industrial milling equipments and beneficiation plants.

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Literature Review: Gearless Motor Failures – A Mill ...

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.

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Projects Undertaken | NCP International

The mill was purchased by NCP as an unused stock mill from Canada. The mill had been stored for a number of years and required refurbishment. NCP International managed the project as well as the mill conversion from 60Hz to 50Hz including replacement of the main drive motors & supply of new pinions.

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Failure Prediction of Induction Motors: A Case Study using ...

Failure Prediction of Induction Motors: A Case Study using CSLGH900/6-214, 5.8 MW, 11 kV/3ph/50 Hz Sag Mill Motor at Goldfields, Damang Mine By C. K. Amuzuvi & H. Warden University of Mines and Technology . Abstract- This paper proposes a generalised feed-forward artificial neural network model that

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SAG Mill | Autogenous and Semi-Autogenous Mills | …

Single stage SAG Mills are very beneficial in reducing CAPEX for plants with a staged throughput approach. When future tonnage is to be increased, the SAG Mill can feed downstream ball milling to boost capacity. Fuller-Traylor SAG/AG Mills range in size from 4.3m through 12.2m in diameter with powers as high as 28,000 kW.

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Grinding Circuit - an overview | ScienceDirect Topics

The circuit comprises a SAG mill, 12 m diameter by 6.1 m length (belly inside liners, the effective grinding volume), two pebble crushers, and two ball mills in parallel closed with cyclones. The SAG mill is fitted with a 20 MW gearless drive motor with bi-directional rotational capacity. (Reversing direction evens out wear on liners with ...

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sag mill liner for final inspection sag mill mill liners

Ball mill preventive maintenance SAG mill AG mill . Aug 11 2015 · 5 Replace the shell liner of ball mill Wear resistant rubber liners manufactured by Naipu are widely used in mining equipment for replacing traditional cast steel liners Naipu spare parts for ball mill SAG mill AG mill include rubber liners and composite liners rubber alloy

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Alphatec Egnineering SL - SAG mill complete foundation ...

SAG mill complete foundation repair service Mining "The grinding mill is at the heart of a mining operation, but a poorly designed, constructed, or deteriorated foundation will not only affect grinding mill performance but potentially render the mill out of action, costing millions of dollars in lost production."

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Ring gear drives huge grinding mill | Machine Design

Located at Kennecott Utah Copper near Salt Lake, this mill uses a ring-motor drive, Figure 5. The SAG mill is followed by two 20-ft diam., 7,500-hp gear-driven ball mills.

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SAG Mill | Autogenous and Semi-Autogenous Mills | FL

Single stage SAG Mills are very beneficial in reducing CAPEX for plants with a staged throughput approach. When future tonnage is to be increased, the SAG Mill can feed downstream ball milling to boost capacity. Fuller-Traylor SAG/AG Mills …

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Vibration Sag Mill Motor NDE Bearing | AMP Maintenance Forums

Vibration Sag Mill Motor NDE Bearing. At our mine we have an issue with vibration at the Sag Motor NDE bearing. The bearing is a journal white metal bearing. The motor has been running for about 14 months now. The vibration at the NDE bearing was around 2mm/sec. In the last month it has climbed to 4.5mm sec with the dominate frequency 1x RPM.

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The engineering and process effects of choosing a motor ...

Such plots for an example mill, the SAG mill at Cadia (described by Dunne et al., 2001) is shown in Figure 3. Any time a process line (green) touches or exceeds the corresponding motor limit (the red or blue lines), the motor is at risk of tripping due to high current, depending on the conditions. Safe operating of a mill and motor means that

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Used Sag Mill for sale. Hardinge equipment & more | Machinio

18 x 10.5 ft (5.5 x 3.2 m) Fuller FLS SAG mill with 1,500 HP. SAG mill, 18 ft diameter, 10.5 ft length.- Manufactured by Fuller 1995 - Rubber-lined, used rubber liners included - 1500 HP, 4160 volt, 1192 RPM, continuous motor, 5010 frame Motor, rebuilt and inspected.

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Mill drives: the desire for increased power and the ...

SAG mill drives (as GMDs) by some operators and principal motor designers/manufacturers until the reasons for known problems in design or manufacturing were better understood and resolved. Accordingly, the latest 40 ft dia. SAG mill is rated at 29 MW and 78% C.S., with a 42 ft dia. mill built but not yet operational. The more recent option

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2021 | Ascot Resources Ltd.

The Ball and SAG mill shells were recently delivered, and are now being assembled and prepared for installation. The Company expects delivery of remaining mill components such as the motors in the near term. The construction camp is nearing completion, with 3 out of 4 dorm modules delivered and installed. ...

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Mill (grinding) - Wikipedia

SAG mill. SAG is an acronym for semi-autogenous grinding. SAG mills are autogenous mills that also use grinding balls like a ball mill. A SAG mill is usually a primary or first stage grinder. SAG mills use a ball charge of 8 to 21%. The largest SAG mill is 42' (12.8m) in diameter, powered by a 28 MW (38,000 HP) motor.

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Mill Lubrication System - SlideShare

Parts of SAG Mill to be lubricated: Trunion Bearing (feed end) Motor Bearings Gearbox Pinion Bearings Fig.1 : SAG mill Diagram Trunion Bearing (dis. end) 7. Lubricant Data: Masbate Gold Project's SAG mill uses Compounded Gear Oil as their main lubricant. But a different class of Gear oil is use in every operating system of the SAG mill.

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WEG package powers Sinclair nickel's SAG mill | WEG

WEG package powers Sinclair nickel's SAG mill. Located near Leonora in the Eastern Goldfields of Western Australia, the Sinclair nickel deposit was discovered in 2005 by Jubilee Mines NL. Initial exploration indicated the potential for a significant nickel sulphide system that culminated in the go-ahead for a new mine to be constructed in 2007.

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Sag Mill Syncronis Motor high axial vibration non drive ...

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 non drive end bearing.(White metal Bearing) The gear mesh frequency is 4200 CPM. The dominant frequency is 2400 CPM.

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Gearless mill drives - Grinding | ABB

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 purpose design to provide highest throughput, reliability and availability for your processing plant.

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Difference Between Sag Mill vs Ball Mill - mech4study

1. SAG mill is the primary tool for grinding. SAG mill is used before the other mills. Ball mill is a secondary, and it is used after the SAG mill. 2. SAG mill breaks the raw material into pieces for the further grinding. Ball mill is used to grind the pieces of raw material into. powder-like structures. 3.

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FORESTALL® - PETRA

FORESTALL ® online predictive and prescriptive maintenance solutions to maximise overall equipment efficiency (OEE) Be better prepared. Unplanned downtime can be an expensive, dangerous and disruptive problem. Lost production can cost $20million per year, on average. Benefit from the best predictive services in a flexible package.

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Used Sag-mills For Sale

Inventory ID: 6C-HM03. UNUSED FL 36' x 24' (11m x 7.3m) Dual Pinion SAG Mill with 2 ABB 9,000 kW (12,069 HP) Motors for Total Power of 18,000 kW (24,138 HP)

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SAG Mill Grinding Circuit Design - 911metallurgist.com

PT Freeport Indonesia, and others with 11.6-m mills) have installed SAG mills of 20 MW. Gearless drives (wrap-around motors) are typically used …

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Cycloconverter - an overview | ScienceDirect Topics

For example, a seamless tube piercing mill [105] where a squirrel cage six-pole 3 MW, 188/300 rpm, 9.6/15.38 Hz, and 2700 V motor is controlled by a cycloconverter bank of capacity 3750 KVA and output voltage 3190 V.

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THE ENGINEERING AND PROCESS EFFECTS OF CHOOSING …

SAG mill at Cadia (described by Dunne et al., 2001) is shown in Figure 3. Figure 2 – Example motor power available as a function of motor speed 0 0.925 1.85 2.775

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Gearless mill drives - ABB

• 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 powerful ...

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The influence of mill speed and pulp density on the ...

•Mill weight (kg) • Throughput (kg/h). The absorbed power is calculated by multiplying the torque on the driving shaft with the shaft speed (rad/sec) and hence excludes any losses associated with the gearbox and motor. The pulp weight in the mill is obtained by subtracting the mill weight during the test from the empty mill weight,

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CITIC-Heavy Industries Co. Ltd

CITIC HIC has received an order for SAG Mill Ø7.9m x 5.3m LG – 5,500kW SAG Mill Ø7.0m x 4.1m LG – 2,800kW Ball Mill Ø7.32m x 10.68m... 02 April 2010 SINO Iron Mill Arrive at Site

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