September 18-21, 2017
Belo Horizonte, Minas Gerais – Brazil
Mining & Aggregate
SME’s 2017 Annual Conference & Expo and the Colorado Mining Association’s (CMA) 119th National Western Mining Conference & Exhibition will provide the knowledge, insights and information you’ll need to not only survive but thrive in an era of rapid economic and market change.
Twiflex, a member of the Altra Industrial Motion Group, a leading global supplier of power transmission components, has provided a parking and emergency brake for use on hoists at a gold mine in Elko County, Nevada. The VCSD-VR brakes are installed on a motor pinion, operating on a 1.168 metre diameter disc to produce a total torque of 128 kNm.
In the last five years, grinding units have increased considerably in capacity, resulting in a trend toward fewer comminution machines per grinding line. Today, 40 ft. diameter SAG mills and 30 ft. diameter ball mills, both with motor powers of more than 22 MW, are commonplace as mine operators look for even larger equipment to achieve greater economy of scale.
Since the beginning of 2015, Twiflex USA has been successful in significantly growing the sales of Twiflex caliper brakes in North America.
As mineral seams close to the surface get depleted, the need to dig deeper, more expansive mines has grown. This trend has significantly increased the demands on mine hoist performance. Mine hoist systems are getting larger with increased material skip capacities and faster hoist speeds (up to 50%) in recent years.