The SIMINE Gearless mill drives pump system significantly enhances concentrator productivity by eliminating the reducer gear between motor and pump and all corresponding maintenance. In addition, the cyclone pumps with variable speed can adjust their energy consumption to the optimized flow of pulp, resulting in energy savings of up to 30%.

Oct 29, · Two 28 MW gearless mill drive systems (GMDS) are operating in the mine's 12-metre SAG mills and four 16.5 MW GMDS are employed in 26 ball mills along with associated control systems. "Gearless mill drives are the 'workhorses' for grinding operations which are at the heart of any mine.

The dynamic analysis of ball mill foundation is a typical problem of soil-structure interaction, and the sub-structure method is used to estimate the structural vibration. knows as Gearless

After extraction in the open-pit mine, the ore is crushed in a huge 40-foot semi-autogenous grinding (SAG) mill and two 27-ft ball mills, all three of which are driven and controlled by ABB gearless mill drive systems with a massive power output of 22.4 and 18.6 mw, respectively.

Choose from our selection of ball end mills in a wide range of styles and sizes. In stock and ready to ship. Offering two times the life of a standard carbide end mill, the end mills in these sets have two milling ends so you can switch to the opposite end when one end wears out.

Ball mills are filled up to 40% with steel balls (with 30–80 mm diameter), which effectively grind the ore.The material that is to be ground fills the voids between the balls. The tumbling balls capture the particles in ball/ball or ball/liner

Giant gearless motor The economy of scale and capital cost issues led to the decision to go with a single large ball mill for pre-processing the ore. The mill contains three compartments, one each for drying, coarse and finish grinding.

Table of ContentsStructural Design of Mill and BearingsStructural Design of the BearingOperational ResultsMaintenance of "Gearless Drive" Mill The reliability of large diameter, high horsepower ball mill is paramount when large production and minimum downtime is required. The 17 ft. x 56 ft. double compartment ball mill at St. Lawrence Cement Company has the first gearless drive built in

Minerals Industries, Inc. 240 Arch Street, P.O. Box 15312 York, Pennsylvania , USA 17405-7312 Phone: + 1 717 843 8671 Fax: +1 717 845 5154 www.metsominerals.com E-mail: [email protected] Gearless Autogenous/ Semi-Autogenous Mills

Two 28 MW gearless mill drive systems (GMDS) are operating in the mine’s 12-metre SAG mills and four 16.5 MW GMDS are employed in 26 ball mills along with associated control systems. “Gearless mill drives are the ‘workhorses’ for grinding operations which are at the heart of any mine.

The measured stress ranges at the toes of the welds at the can-to-can flange in the Antamina ball mills were slightly higher than those obtained from the "standard" finite element analysis that was undertaken during the design of the mill. The difference between the measured stresses at Telfer and Antamina is that the liners in the Telfer