Gear Drive Sag Mill Vs Gearless Drive Sag Mill


Gearless mill drives - Grinding | ABB

Our GMD eliminates all mechanical components of a conventional mill drive system, such as ring-gear, pinion, gearbox, coupling, motor shaft and motor bearings: By mounting the rotor poles directly onto the mill, the mill itself becomes the rotor of the gearless motor


Gearless AG/SAG mills - liming

Gearless AG/SAG mills With the proven use of gearless drive technology, the limitation of AG/SAG mill size due to gearing constraints has been eliminated liming is the world's leading supplier of gearless AG/SAG mills


Ring gear drives huge grinding mill | Machine Design

The SAG mill is followed by two 20-ft diam, 7,500-hp gear-driven ball mills Another type of drive, less commonly used, consists of a motor-driven speed reducer that is coupled to one of two


gear drive sag mill vs gearless drive sag mill - elslipsnl

ring motor sag mill - makhariaelectricalsin Gearless Mill Drive Protection Improvements and Its -, Laguna Seca concentrator uses a SAG mill and three ball mills, all driven by gearless mill addition, it does not need any gear box and ring gear and therefore the transmission of the torque between the motor and the mill is done through


Gearless Mill Drives | Beneficiation | Siemens

In ore processing, grinding is an essential step for the overall performance of any mine That is why the gearless drive of a grinding mill is one of the most crucial pieces of equipment in the concentrator and why it is subject to particularly high demands Siemens has provided about 80 SIMINE Gearless mill drives to the mining industry since


Updates on geared vs gearless drive solutions for grinding

Updates on geared vs gearless drive solutions for grinding mills Among the many reasons that geared drives on large SAG mills are not favoured, is due to not having an efficient variable speed drive option (60 to 80% critical speed), which is required for process reasons As technological advances have occurred quite rapidly in recent


Updates on geared vs gearless drive solutions for grinding

Updates on geared vs gearless drive solutions for grinding mills Among the many reasons that geared drives on large SAG mills are not favoured, is due to not having an efficient variable speed drive option (60 to 80% critical speed), which is required for process reasons As technological advances have occurred quite rapidly in recent


gear drive sag mill vs gearless drive sag mill - elslipsnl

ring motor sag mill - makhariaelectricalsin Gearless Mill Drive Protection Improvements and Its -, Laguna Seca concentrator uses a SAG mill and three ball mills, all driven by gearless mill addition, it does not need any gear box and ring gear and therefore the transmission of the torque between the motor and the mill is done through


2009 Gearless Mill Drives - CB&MUA

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


Gearless Mill Drives | Beneficiation | Siemens

In ore processing, grinding is an essential step for the overall performance of any mine That is why the gearless drive of a grinding mill is one of the most crucial pieces of equipment in the concentrator and why it is subject to particularly high demands Siemens has provided about 80 SIMINE Gearless mill drives to the mining industry since


Gearless mill drive (GMD) and digital services for Kinross

The company selected ABB's 26 MW gearless mill drive system (GMD) for the mine’s 40 ft SAG mill, as well as other drives, electrical infrastructure equipment and a long-term service agreement (LTSA) This is expected to reduce operating costs, improve process throughput and reliability while saving energy and keep equipment in top form


SAG Mill Components - 911metallurgist

The type of drive and drive design used on a given mill, especially with respect to the motor type, is directly influenced by the study of the owner’s electrical system Manufacturing limitations from gear vendors determine the minimum number of pinions which can be used to drive the mill as well as the number of gear sections


Gearless Drives - industrysiemens

plied gearless drives for two 36-foot ring motors, de-veloping a 12,000 kW gearless drive for the Kennecott, Utah, SAG mill and a 11,200 kW gearless drive for the El Teniente, Chile, SAG mill In a continued call for larger, even more powerful drives, Siemens kept pace In 1996, liming ordered the first gearless


ABB ring geared mill drives - YouTube

Jun 05, 2013 · Our variable-speed 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 …


Paper # 25 - Copper Mountain Overview on the Grinding

advantageous features which were previously exclusively available on gearless mill drives GRINDING CIRCUIT The grinding circuit for the Copper Mountain project consists of one FLSmidth SAG mill and two FLSmidth ball mills Figure 1 - Overview grinding circuit The Copper Mountain SAG mill is 10363 mm [34 feet] in diameter and 6096 mm [20 feet


sag mill drive arrangement canada - girotondoforafricait

The SAG mill was fitted with a gearless drive with a power rating of 24 MW and the ball mills were also fitted with gearless drive systems, each providing 164 MW “Lessons learnt from recent failures of gear drives on mills in Arrangement drawing of high speed solution Figure 7 Contact More


lubrication systems for sag mills south africa

Lubriion System Of A Sag Mill Crusher USA About lubriion system of a sag millrelated information:table 2 comparative drive systems for 13 mw sag mill (morgan, 2001) dual rotor drive gearless dual ccv low SMC SAG Mill Comminution AcronymAttic


Advantages of SER drives for SAG mills | GoHz

Dec 19, 2014 · Advantages of SER drives for SAG mills; Advantages of SER drives for SAG mills Friday, December 19, 2014 the gearless drive (cyclo-converter) is typically used because gearboxes and pinion gears reach their present limit in size I expect that this type of drive would be the most common large mill variable speed mill drive in the world


Horizontal mill - Gearless AG/SAG Mills - liming Corporation

With the proven use of gearless drive technology, the limitation of AG/SAG mill size due to gearing constraints has been eliminated liming is the world's leading supplier of gearless AG/SAG mills Features The experience gained from installation and operation of these mills enables us to offer mills of up to 35,000 installed horsepower or more


BALL MILL DRIVE MOTOR CHOICES - artec-machine

• Drive 1 - A 5000 HP, 1200 rpm wound rotor motor with liquid rheostat and power factor correction capacitors to a dual pinion gear driven mill; • Drive 2 - A 5000 HP, 514 rpm synchronous motor with an air clutch and gear box to a center drive mill; a Drive 3 - A 5000 HP, 514 rpm synchronous motor with soft-start and an air clutch and


engrenagem drive sag moinho vs gearless drive sag mill

engrenagem drive sag moinho vs gearless drive sag mill molinos de bolas dual pinion siemensgetsmill These heavy-duty mills feature hydrostatic lubrication with either geared or gearless drive sag mill grinding moinho analitico de batelada ball mill Conversar com as vendas


The operation modes of a grinding mill with gearless drive

The use of gearless drives for grinding mills, es-pecially SAG mills, has increased considerably in recent years, owing to their many benefits Besides adjusting the mill to softer or harder ore, the vari-able speed of the gearless drive is used to facilitate the Inching, Normal Start and Stop operation modes of the mill


Autogenous and Semi-Autogenous Mills | FLSmidth

Single stage SAG Mills are very beneficial in reducing CAPEX for plants with a staged throughput approach When future tonnage is to be increased, the SAG Mill can feed downstream ball milling to boost capacity Fuller-Traylor SAG/AG Mills range in size from 43m through 122m in diameter with powers as high as 28,000 kW


Horizontal mill - Gearless AG/SAG Mills - liming Corporation

With the proven use of gearless drive technology, the limitation of AG/SAG mill size due to gearing constraints has been eliminated liming is the world's leading supplier of gearless AG/SAG mills Features The experience gained from installation and operation of these mills enables us to offer mills of up to 35,000 installed horsepower or more


The World S Largest Geared Grinding Mill

Autogenous and Semiautogenous mills - Gearless mill drive (GMD) technology has further expanded the use of large AG/SAG milling allowing to produce the world's largest SAG mill of 42’ in diameter drawing power at 28 MW Today, is the world leading supplier of gearless AG/SAG mills …


Gearless drive systems for belt conveyor and grinding

Feb 18, 2013 · The SAG mill was fitted with a gearless drive with a power rating of 24 MW and the ball mills were also fitted with gearless drive systems, each providing 164 MW


Advantages of SER drives for SAG mills | GoHz

Dec 19, 2014 · Advantages of SER drives for SAG mills; Advantages of SER drives for SAG mills Friday, December 19, 2014 the gearless drive (cyclo-converter) is typically used because gearboxes and pinion gears reach their present limit in size I expect that this type of drive would be the most common large mill variable speed mill drive in the world


CONGA: THE WORLD’S FIRST 42 FOOT DIAMETER 28 MW …

CONGA: THE WORLD’S FIRST 42 FOOT DIAMETER 28 MW GEARLESS SAG MILL ABSTRACT In 2010 Newmont made the decision to purchase a 42 foot (ft) Semi-Autogenous Grinding (SAG) mill from liming and a 28 Mega-Watt (MW) Gearless Mill Drive (GMD) from ABB for the Conga Project in Peru


SAG Mill Grinding Circuit Design

Many large mills around the world (Esperanza with a 128 m mill Cadia and Collahuasi with 122-m mills, and Antamina Escondida # IV PT liming Indonesia, and others with 116-m mills) have installed SAG mills of 20 MW Gearless drives (wrap-around motors) are typically used for large mills, with mills of 25 MW or larger having been designed


INNOVATION NEWS Mills and GMDs - ABB Group

With this innovative concept the gearless mill drive (GMD) eliminates all critical mechanical components inherent within a conventional mill drive system, such as ring gear, pinion, gearbox, coupling or air clutch, motor shaft and motor bearings Eliminating reliable drive system for SAG mills Early SAG mills had a diameter of about 32


ABB gearless mill drive & digital services help increase

The company selected ABB’s 26 MW gearless mill drive system (GMD) for the mine’s 40 ft SAG mill, as well as other drives, electrical infrastructure equipment and a long-term service agreement (LTSA) This is expected to reduce operating costs, improve process throughput and reliability while saving energy and keep equipment in top form


biggest sag mill machinery - nijmegenfotograafnl

Autogenous and Semiautogenous mills Gearless mill drive (GMD) technology has further expanded the use of large AG/SAG milling allowing to produce the world"s largest SAG mill of 42" in diameter drawing power at 28 MW Today, is the world leading supplier of gearless AG/SAG mills …


hydraulic ball mill drive - indrive-projecteu

china ball mill with hydraulic gearless drive ball mill drive hydraulic gyptechin china ball mill with hydraulic gearless drive mar following the sag mill will be two hp ball mills, each one ft and a ring motor gearless drive either of which wraps Putting a Ball or SAG Mill on Care and Maintenance


Sag Mill Synchronous Motors - Henan Mining Machinery and

Geared VS Gearless Drive Solutions for Grinding Mills 1996 SAG mill conference, provided details of the then Ball – Fixed LS Synchronous Motor Efficiency Girth Gear Efficiency Reducer Efficiency Ore Crushers / sag mill synchronous motors 38' x 248' SAG Mill, the ore is crushed in a huge 40-foot semi-autogenous grinding