gearless sag mill slip ring motor

Availability and Reliability of Siemens' Gearless

Siemens has experienced with our Gearless Mill driv This paper , the SAG mill motor was a problem at start-up and for some months thereafter” , A flashover occurred between the bus bars that connect the field windings to the slip rings.

Control of Large Salient-Pole Synchronous Machines , - IEEE

May 8, , gearless drives have about 76 salient poles attached around the mill cylinder They form , grinding effect Ring-motor-driven SAG mills in copper mines have shown , The absence of slip reduces machine losses and leads to.

1 NEW LOCKED CHARGE PROTECTION SYSTEM PREVENTS

SAG mill, Ball mill, Locked charge, drop charge, frozen charge, Liquid , describes the implementation of such a system for gearless driv , For a wound rotor motor the air-gap torque is proportional to the rotor current amplitude, as long.

Updates on geared vs gearless drive solutions for

Among the many reasons that geared drives on large SAG mills are not favoured, is due , comparisons and attempts to dispel some of the myths regarding Slip , MAGMA (using full ring risers with solidifications & cooling), ultrasonic testing and , interface between the mill vendor and the gearless motor supplier Figure 9.

sag milling in australia - focus on the future - Orway

The Fimiston m (36 ft) SAG mill uses twin wound rotor/gearbox/ , The CCV - ring motor (gearless) drive is used at Cadia (20 MW) and Olympic Dam (18.

Starter of SAG Mills with rotor resistance

A: For large mills requiring variable speed, the wound rotor motor and SER drive , Above 16MW, the gearless drive (cyclo-converter) is typically used because.

Gearless mill drives Go gearless

, MW gearless motor for a ball mill at Ciments Lambert-Lafarge , The ABB gearless mill drive (GMD) is the most powerful mill drive system on the market , slip rings to the rotor of the gearless motor Typically knife switches (off- load manual.

When ABB built its first Gearless Mill Drive (GMD) for a

motors for grinding mills, fans, conveyers etc account for , When ABB built its first Gearless Mill Drive (GMD) for a cement plant in , slip rings to the field supply.

Industrial Motors - TMEIC

grinding, conveyors, and compressors , induction motors for the operation of steel rolling mills , Blowers, Gearless , No slip rings are required with the.

Peter Warner - LinkedIn

Gearless Mill Drives, Large Drives and Winders Consultant , b) 40', 21 MW SAG and 2 x 26', 16,4 MW BM , Resolving mechanical failures to the mill drive train, caused by torque transients during starting dual pinion slip ring induction motors.

DRIVES AND CONTROLS Geared and gearless drives

the mine to the processing plant , plant The existing railway is now being replaced by an efficient conveyor belt system and a gyratory crusher , unique construction of slip-ring, twin drive slip- , ATB Group Austria Antriebstechnik AG, have.

Gearless Mill Drive Sales Rev Up to Meet Demand

Gearless mill drives are becoming the drive system of choice on large AG, SAG , The contract called for two GMD systems with preengineering, ring motors with , Slip-Ring Motors—High-speed drives generally used for smaller mills, but can.

Gearless mill drives - Grinding - ABB

ABB's Gearless mill drive system is the most powerful mill drive system in the market to power semiautogenous (SAG), ball and autogenous (AG) mills.

Evolution of direct coupled pinion drive technology for

Rotor Induction Motor, Dual Pinion Mill Drives, SAG Mill, AG Mill, Ball Mill , applications, three main solutions exist; (i) high speed wound rotor induction motor , large air-clutch start solutions, current source drive applications and gearless mill.

ball mill drive motor choices - Artec Machine

ball mills, the starting torque restrictions of some of the newer mill drive , solution, it was reasoned in the early 70's that less was better, and the gearless drive was , Drive 1 - A HP, rpm wound rotor motor with liquid rheostat and.

1 - Page INCREASING THROUGHPUT, REDUCING ENERGY

There are three common motor types that drive the grinding mills: , Gearless motors , Figure 1 - A dual-pinion, ring-geared mill with ABB drive system , of a slip-ring motor and a liquid rheostat or, sometimes, a synchronous motor with.

Ring gear drives huge grinding mill - Machine

By this summer, a grinding mill that is bigger around than a Boeing 747 will turn , Main competitors are the ring gear, as used at Escondida, and a ring motor (gearless drive), , The higher-speed motors are either squirrel cage or wound rotor.

Ring gear drives huge grinding mill - Machine

By this summer, a grinding mill that is bigger around than a Boeing 747 will turn , Main competitors are the ring gear, as used at Escondida, and a ring motor (gearless drive), , The higher-speed motors are either squirrel cage or wound rotor.

Solutions for Mining - WEG

crushers, flotation cells, geared and gearless slurry , Slip ring/Wound Rotor Induction Motor (WRIM) + liquid rheostat starter (supplied by others) and associated electrical , For Dual or Single Pinion Configuration of Ball and SAG Mills, the.

Gearless AG/SAG mills -

is the world's leading supplier of gearless AG/SAG mills , The design features motor rotor elements bolted to a mill shell, a stationary stator assembly.

Benefits of continuous data acquisition from critical large

Wound Rotor (slip ring) Induction Motors , Figure 3 shows a ball mill with a dual pinion drive , For larger applications the well-proven Gearless Mill Drive.

ABB gearless mill drives GMD - YouTube

Jan 28, , , mill drive system in the market to power semiautogenous (SAG), ball , such as ring-gear, pinion, gearbox, coupling, motor shaft and motor.