motors of sag mill

Used Sag-mills For Sale

Inventory ID: 6C-HM03. 2 Units - UNUSED FL 36' x 22'6" Dual Pinion SAG Mill with 2 ABB 9,000 kW (12,069 HP) Motors for Total Power of 18,000 kW (24,138 HP)

AM King - Used Machinery & Processing Equipment

3,000-5,000 TPD Iron Ore Process Plant 3,000 HP FLS Ball Mill, VTM 1500, 15 5-deck Sizers, 6 SLon Outotec Magnetic Separators, Pumps, Northstar Disc Filter and Much More!

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

Sep 10, 2014· 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.

Advantages of SER drives for SAG mills | GoHz.com

Dec 19, 2014· Advantages of SER drives for SAG mills; Advantages of SER drives for SAG mills. Friday, December 19, 2014. For large mills requiring variable speed, the wound rotor motor and SER drive are economical for a total rating of approximately 2MW to 16MW. ... I expect that this type of drive would be the most common large mill variable speed mill ...

molino sag - YouTube

Jun 05, 2018· concepto, funcionamiento, partes del molino, montaje desmontaje.

Sag Mill Synchronous Motors - Henan Mining Machinery and ...

Sag Mill Synchronous Motors Prompt : Caesar is a famous mining equipment manufacturer well-known both at home and abroad, major in producing stone crushing equipment, mineral separation equipment, limestone grinding equipment, etc.

Used Sag Mill for sale. equipment & more | Machinio

18 x 10.5 ft Fuller SAG mill with 1,500 HP GM702. SAG mill, 18′ diameter x 10.5 ft long.– Manufactured by Fuller – Rubber-lined – 1500 HP, 4160 volt, 1192 RPM, continuous motor, 5010 frame – Moventas gear reducer, 4.5:1 gear ratio, 264.4 output RPM.

Ring-geared mill drives - Grinding | ABB

Mill application features. Frozen charge protection – Detects frozen charge in the mill, minimizing equipment wear and liner replacements.; Coupling supervision – Detects if a failure or slippage occurs in the couplings and stops the system in case, preventing major damages.; Stand-still detection – Prevents the motors from re-starting if the mill is still rocking or moving after a stop ...

SAG mills (semi-autogenous grinding mills) -

Gearless mill drive (GMD) technology has further expanded the use of large SAG milling allowing to produce the world's largest SAG mill of 42' in diameter drawing power at 28 MW. Today, is the world leading supplier of gearless SAG mills operating globally.

Difference Between Sag Mill vs Ball Mill - mech4study

Oct 12, 2017· SAG mill make use of steel balls included with some large and hard rocks for grinding. These mills utilize the balls in making the large fragments of materials broken into pieces. The ball charge of a SAG mill is about 9% to 20%.This process takes place inside the large rotating drum of SAG mill which is filled with balls partially.

Overload Detection in Semi-Autogenous Grinding: A ...

Detecting the onset of overloading in a semi-autogenous grinding (SAG) mill is a challenging task for operators to perform due to the complex and nonlinear nature of an overload.

Gearless Mill Drives

Antamina Compania Minera Antamina S.A. Peru Project: One SAG Mill and 3 Ball Mill Drive Systems Capacity: SAG Mill 1000 t/h Ball Mills 1000 t/h Consultant: Bechtel, USA Mill Builder: FFE Minerals, USA Mill Size: SAG Mill 38 feet/11,58 m Ball Mills 24 feet/7,32 m Ore processed: Copper/Zinc Drive Rating: SAG Mill 20,1 MW, 9,23 rpm Ball Mills 11,2 MW, 11,38 rpm

SAG Mill Grinding Circuit Design

sag mill wrap around motor. Wraparound Sag Mill Failure - … Matching Real World Results All of the ore processed Wraparound Sag Mill Failure by the mine passes through the primary SAG mill. performance of the latest generation wrap-around motor-driven, large grinding mills that it ...

SAG Mill motor transformer failure at Copper Mountain Mine ...

May 16, 2013· SAG Mill motor transformer failure at Copper Mountain Mine By Published: May 16 ... the SAG mill and two ball mills have identical motors and transformers that are …

Vibration Sag Mill Motor NDE Bearing | AMP Maintenance Forums

Vibration Sag Mill Motor NDE Bearing; Vibration Sag Mill Motor NDE Bearing. robbie60 Member. 7/28/155:28 PM. 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.

(PDF) Evaluation of synchronous motors on grinding mills

Evaluation of synchronous motors on grinding mills. ... The c ombined motor and mill inertia is larger than the . ... retrofitting a SAG Mill with new contro l was a major decision with many ...

Autogenous and Semi-Autogenous Mills | FL

SAG and AG Mills operate by lifting ore/grinding media and dropping it on the operating bed of the mill charge. High impacts from lifting ore and media promote impact breakage which is the primary mechanism for size reduction in the mill.

Phoenix: Big mill and latest tech keep long-lived mine ...

Jun 06, 2019· "The motor on our SAG mill is the fascinating part for me," Hope said. "The mill is its own motor," Tucker explained. "The mill is what would be considered the rotor in a motor. It's a ...

Mining - Grinding and Processing | WEG

In addition to the efficiency levels, power factor correction, high torques and low starting current, the constant speed under load variations and low operating and maintenance costs are the main reasons why WEG Synchronous Motors are used in mill driving systems. Induction motors. For ball and SAG /AG mills with a single or double pinion ...

Gearless Mill Drives | Beneficiation | Siemens Global Website

Frozen charge detection and automatic loosening with gearless mill drives (SAG Conf. 2015) Mill drives: the desire for increased power and the associated limits and conditions (SAG Conf. 2015) The engineering and process effects of choosing a motor design speed (SAG Conf. 2015)

(PDF) Technical Evaluation and Practical Experience of ...

This paper presents a technical evaluation and practical experience of two different technologies used in high-power grinding mill drives. ... motor interaction, and the required control scheme ...

SAG Mill Components

SAG Mill Components. Previous Next ... These continuously monitor individual mill power and adjust each motor with respect to the.other, such as the D.C. field, to achieve a balanced load division to the gearing. Until more experience is gained on this type of drive, Allis-Chalmers and major gear drive vendors advise adding a safety factor of ...

Ring gear drives huge grinding mill | Machine Design

Motors & Drives; Ring gear drives huge grinding mill. By this summer, a grinding mill that is bigger around than a Boeing 747 will turn chunks of copper ore into gravel-sized bits for smelting and ...

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

18′ X 30′ OUTOTEC SAG MILL. Manufacturer: Outotec Size: 5.5 m dia. X 9.15 m EGL 4500 kW WEG wound rotor motor – 1000 RPM, 11,000 volt, 3 phase, 50 Hz 2 Piece welded steel shell Cast steel feed and discharge heads Alloy steel liners Hydrostatic multi pad trun...

Grinding mills - for mining and minerals processing -

Every mining operation has a unique grinding process. has experience of over 8,000 grinding mills globally, including manufacturing and delivering the largest SAG/AG mills in the world. Our experts welcome the opportunity to assist you with circuit and circuit control design as well as start-up, operation, and optimization of your mill.

Mill (grinding) - Wikipedia

Frozen charge detection and automatic loosening with gearless mill drives (SAG Conf. 2015) Mill drives: the desire for increased power and the associated limits and conditions (SAG Conf. 2015) The engineering and process effects of choosing a motor design speed (SAG Conf. 2015)

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

INNOVATION NEWS Mills and GMDs - ABB Ltd

Mills and GMDs Maarten van de Vijfeijken* looks at large, larger and the largest units in grinding ore T he gearless motor (also called wrap-around motor or ring motor) is a very large synchronous motor. The poles of the motor are directly installed on a pole flange on the mill shell: this means the mill body becomes the rotor. The stator of the

New & Used Sag Mills for Sale | Semi-Autogenous Grinding ...

SAG mills are essentially autogenous mills, but utilize grinding balls to aid in grinding like in a ball mill. A SAG mill is generally used as a primary or first stage grinding solution. Attrition between grinding balls and ore particles causes grinding of finer particles.

SAG Mill Motor Programmed Rewind | Qualitrol Corp

SAG Mill Motor Programmed Rewind. During a visual inspection & condition assessment on the SAG Mill it was identified there was an insulation anomaly in the rotor which exposed the business to the risk of unexpected failure.

Mills - FLANDERS

FLANDERS has developed our own line of higher-performance, purpose-built mill motors and drives based on years of experience doing motor troubleshooting and repairs for major steel, aluminum, copper, and paper mill operations. Our reversing mill and finishing mill motors are unsurpassed in the industry for reliability and performance.