largest gear driven sag mill

drive application is a dualpinion SAG mill driven by two 5,000 kW wound rotor induction motors (WRIM). Two TMdrive10SPRs control motor speed by recovering rotor current and returning the power to the utility supply. Confi gured in a twin motor arrangement, the motors share load in the tandem mill.

Boston Gear gearing and gear drives for ball and sag mills.

Jun 05, 2013· Our variablespeed mill drives offer optimized solutions for grinding applications such as AG, SAG and ball mills. These drive systems are based on ABB's ACS drives family and offer the following ...

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In an attempt to locate the LARGEST gear in the Guinness Book of World Records, this author fell incredibly short. There's no mention of, for example, some of Rexnord/Falk's mining girth gears or the singlehelical SAG mill girth gear from David Brown (England) delivered in 2008 for a mining operation in Armenia. (A gear that weighed

SAG mills are characterized by their large diameter and short length as compared to ball mills. SAG mills are primarily used at gold, copper and platinum mines with applications also in the lead, zinc, silver, alumina and nickel industries.

SAG Mill SemiAutogenous Grinding Mill. The power to spin the mill comes from large electric motors coupled to mill shell through a clutch and gear system. These electricity consumed by these motors is the largest cost and inefficiency. Most of the power is converted to heat in the charge (load) and a small percentage into ore breakage.

Selecting Inching Drives for Mill and Kiln Applications Glen Cahala Frank C Uherek, Principal Engineer Gear Engineering Software Development Abstract The inching drive, also known as a barring or auxiliary drive, is an important component of any mill or kiln installation. It is used for .

Marsh 1 WHY shift to the gearless drives in mineral processing ??? Mill size – grinding economies of scale Relative lifecycle cost Lower power consumption Robust design Avoiding critical open gear power trains Variable speed Compatibility with processing plants Engineering design efficiencies Availability Minimal downtime

The ball mill measures x 14 m; in terms of power—transmitted by mechanical gear drives—it is considered one of the world's largest, if not actually the world's largest, horizontal mill, driven by two Siemens type 1RR51086FA90Z threephase asynchronous motors with slip ring rotors, delivering an output of 9 MW each.

Boston Gear gearing and gear drives for ball and sag mills.

SAG mill conference, provided details of the then largest gear drive in operation on a SAG mill (34ft x 18ft) at Escondida, which began operation in 1995.

Outotec presents the world's largest SAG mill Mineral Processing. The contract includes the design and manufacture of a Ø 40' x 29' SAG mill The mill will be driven by a Gearless Motor Drive (GMD) which at 280 MW is equal to, Outotec has developed the Outotec hydraulic Inching .

The grinding process with one 34' x 20' SAG mill and two 24' x 395' ball mills will be briefly discussed All three mills are gear driven by a ring gear, dual pinion. Contact Supplier sag milling in australia Orway Mineral Consultants

A SAG mill requirement might be 225250% torque based on Full Load Motor Torque (FLMT). This is the amount of torque the drive motor can produce on a temporary basis during start up. Wichita Clutch has designed its multiplate Grinding Mill Clutch (GMC) specifically for use on challenging ball and SAG mill .

drive for a grinding mill is shown in figure 1. Figure 1 – Top view of SAG mills with alternative drive options; left side: dual pinion drive including motor, gearbox, pinion and girth gear.

At the Cadia Valley Operations, Newcrest operates two underground mines and one open pit mine. Ore is processed to a heavily auriferous copper concentrate in a crushing, grinding and flotation circuit. This twostage grinding circuit consists of a 40 ft SAG mill with a 20 MW Siemens gearless drive and two parallel 10 MW gear driven ball mills.

Jun 01, 2013· The scope of supply includes one (1), 13 500kW Dual Drive SAG Mill and one (1) 22x34ft, 8500kW Dual Drive Ball Mill. Both mills will operate with VVVF Drives and share a liner handler.

Steel Balls. Primar y Mill Feed. AG/SAG Mill. Secondary Mill Feed. Ball Mill. Discharge ..... for main motor and barring/inching drive inputs, and for. Read More. Industrial gear unit drive solution for ball mills | SEWEURODRIVE. ... Complete MDX mill drive system; girth gear, pinion, mill drive gearbox,... Read More. Grinding Mills ...

sag or ball mill helical ring gears description, SAG mill, ball mill, ring gear, ball mill helical pinion gear Chat With Sal How To Fix Ball Mill Gear Pinion Manufacturer India Ring gear drives huge grinding mill | Mechanical Drives content from 1 Mar 2000 Following the SAG mill will be two 9,000hp ball mills.