WhatsApp)
11.2 MW power and 13.0 rpm was installed in the minerals industry. Since then, numerous GMDs for ball mills and SAG mills have been installed in the minerals industry. A GMD with a high power of up to 20 MW and more, as a result of today's requirements for ball and SAG mills for the minerals industry, has of course a certain complexity. It should

M&C's scope of work comprised the installation of stator quadrant windings on the four mill motors, which were manufactured by Siemens. The four motors are Gearless Mill Drives (GMD), also known as wrap-around motors, and include two 26 MW ball mill motors and two 28 MW SAG mill motors.

May 26, 2011· The GMD powers a 38′ (SAG) mill at the Canadian Malartic gold mine. Engineering, delivery and commissioning of the complete 19 MW GMD system are worth more than $20 million. Ronald Bougie ...

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.

One of the largest SAG mills (12 m diameter), has a variable speed gearless mill drive (GMD) with a capability of 28 MW for refining copper- molybdenum-silver, and the average power draw is around 12.5 MW with a feed rate of up to 6000 t/h . Due to the large size of the equipment and the high energy consumption, process simulation and ...

Gearless mill drive (GMD) technology has further expanded the use of large AG 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 AG mills operating globally.

4,600 masl in the Andes will be the first GMD at this altitude. And, in another project, ABB received an order to supply another 28 MW GMD for a 40' SAG mill. Furthermore ABB won the detailed engineering of the 28 MW GMD for the world's first 42' SAG mill for .

The mill will be driven by a Gearless Motor Drive (GMD) which at 28.0 MW is equal to the largest grinding mill power ever used in the mining industry. The SAG mill design is based on Outotec's proprietary grinding mill technology, developed over decades for maximum reliability and performance.

single-stage SAG mills to the largest mill in the world – with a 40-foot diameter and 28 MW of motor power. Ball mills Ball milling is the most common application for horizontal tumbling mills. Outotec offers a full range of ball mills to suit a wide variety of duties, from a few hundred kW all the way up to 20 MW and beyond. Rod mills

• 5 critical steps in your mill installation, page 1 • Flotation launder design, does it matter? page 5 ... 28 MW GMD (Gearless Mill Drive). ... Purpose-built cradles fixed to shell flange on an Outotec 40ft SAG mill. The lifting attachments for large critical lifts need to be

• 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 masl 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 .

CONGA: THE WORLD'S FIRST 42 FOOT DIAMETER 28 MW GEARLESS SAG MILL ABSTRACT In 2010 Newmont made the decision to purchase a 42 foot (ft) Semi-Autogenous Grinding (SAG) mill from and a 28 Mega-Watt (MW) Gearless Mill Drive (GMD) from ABB for the Conga Project in Peru.

Jun 16, 2014· The company had received this contract in 2011 to provide GMD for 3 mills - a 36-feet 12 megawatt GMD required for the semi-autogenous mill and a couple of 22-feet 8.9 MW GMD's for the two ball mills. Apart from these, ABB was required to provide gas insulated switchgear with a capacity of 220 kilovolt (kV), harmonic filters and power factor ...

Preprint 13-050 UPDATES ON GEARED VS GEARLESS DRIVE SOLUTIONS FOR GRINDING MILLS ... SAG mill conference, provided details of the then largest gear drive in operation on a SAG mill (34ft x 18ft) at ndida 13.4MW, which ... Mill. In this case the GMD requires slightly less space but it does

SAG Mill Control: It Shouldn't be ... (49.2 ft) long, and will be powered by a 28-MW Siemens GMD. Siemens also supplied the gearless drives for a 36-ft SAG mill with a rated power of 15 MW and a 26-ft ball mill with 15.5 MW of rated power recently installed .

Apr 06, 2011· The GMD system portion consists of a 12 MW GMD for a 36-ft SAG mill and two 8.9 MW GMDs for two 22-ft ball mills. Leaving the factory at the end of 2011, the two GMDs will be the first ones assembled at ABB's new GMD assembly factory in Basel, Switzerland.

Metallurgical ContentBall Charge Motion inside a SAG MillSAG Mill OperationSemi Autogenous Design FactorsSAG Mill Operation ExampleProcess Plant DescriptionSAG Mill Design and Specification Operating Problems Since CommissioningDesign Changes and Future Operating Strategies AG and SAG mills are now the primary unit operation for the majority of large grinding circuits, and form the .

Nov 08, 2016· ABB Motor Gearless Mill Drive GMD System. Electric Motor HOW IT'S MADE-Super Electric Motor Manufacturing Technology in China - Duration: 22:05. SMT Winding Equipment Recommended for you

Operating mills with a Siemens GMD not equipped with the Frozen Charge Shaker can be principally upgraded ... (RPM) with a 38ft, 20 MW SAG Mill in Brazil and Lumwana having a 38ft, 18 MW SAG and one 26ft, 16 MW Ball Mill in Zambia, all three mills put in .

Predictions of mill throughput from a porphyry copper open pit based on comminution test results of 22 . SAG Mill/Ball Mill circuit consisting of one 40 ft dia. x 22 ft EGL SAG Mill rated at 24 MW GMD and two Ball Mills, each 26 . BATU HIJAU. Belajarlah lagi; Beli hammer mill 200 mesh - YouTube. Feb 13, 2016 .

Jan 19, 2018· The full scope of supply for the GMD system consisted of a 23.5-MW ring motor, cycloconverter transformers, excitation transformer, cycloconverter, and ABB control system for the mill .

Semi-autogenous grinding (SAG) mill liner design and development D. Royston Principal, Royston Process Technology Pty Ltd., Brisbane, Queensland, Australia Abstract SAG mill liner development draws primarily on practical experience from SAG milling operations supported by

Between 2001 and 2008, a limit of 22 MW was placed on 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.

ABB was awarded a multi-million contract to provide a 28 MW GMD for a 40 ft (12.2 m) SAG mill and two 22 MW drives for a pair of 28 ft (8.5 m) ball mills at Aktogay, and three identical systems at Bozshakol. Each includes phase and excitation transformers, a ring motor with a local mill control panel, and a containerised electrical house (E ...
WhatsApp)