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Peru

ABB Gearless Mill DriveSystem at Minera Yanacocha

ABB, the power and automation technology group, has announced that it has successfully completed commissioning of a 16.5  MW gearless mill drive (GMD) system for a 32 feet SAG (semiautogenous) mill at Minera Yanacocha. The mine, located in Cajamarca, Peru, is the largest gold producer in Latin America.

Newmont Mining Corporation, owner of Minera Yanacocha, had signed the contract for the goldmine expansion project with ABB in early 2006.

The order comprised a complete GMD system including harmonic filters. Each GMD system includes transformers, ring motors and a complete E-house. With a GMD acting as a variable speed drive, mills start smoothly, without any mechanical stress. GMDs provide maximum control over the grinding process and allow for adjustments, meeting customer requirements for process efficiency and flexibility.