ABB gearless mill drive system to power SAG mill | Automation.com

ABB gearless mill drive system to power SAG mill

September 1, 2010 - ABB won an order from Newmont Mining Corporation to engineer three gearless mill drive (GMD) systems to be installed at the Yanacocha Minas Conga oxide copper gold project in Peru. Fluor Corporation in Santiago, Chile, will act as EPCM contractor for this important project; Metso Corporation will be the mill supplier. Once the project is approved by Newmont's board of directors, a new contract will be entered into for ABB to proceed with the fabrication and installation of the three mills.

The Conga project is located in Peru, approximately 900 km north of Lima, at an altitude of 4100 meters above sea level. It is situated near the Newmont Yanacocha gold mine, where an ABB GMD has been operating successfully since early 2008.

The contract includes the engineering for a 28 megawatt GMD system for a 42 feet SAG (semiautogenous) mill, the world s largest mill in diameter. In addition, it includes the engineering for two 15.6 megawatt GMD systems for two 26 feet ball mills.

This project reinforces ABB s continued good relationship with Newmont, Fluor and Metso, and provides the groundbreaking challenge to engineer the GMD system for the world s first mill above 40 feet in diameter.

Acting as a variable speed drive, the GMD allows the mill to start smoothly, without any mechanical stress and fulfills the customer s requirements for flexibility and adjustability of the process, enabling maximum control over the grinding process. ABB gearless mill drive systems feature numerous benefits when compared with conventional geared drive systems: superior reliability, increased process availability, extended life span and improved energy efficiency. ABB delivered the world s first gearless machine drive in 1969, which is still operating at the Ciment Lamberg-Lafarge cement plant in Le Havre, France.

ABB is a leader in power and automation technologies that enable utility and industry customers to improve their performance while lowering environmental impact. The ABB Group of companies operates in around 100 countries and employs about 117,000 people.
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