gearless mill drive system

Gearless Drives

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, Freeport ordered the first gearless drive for a 38-foot SAG mill located at the company's

ABB gearless mill drive system will power world's first 42 ...

Baden, Switzerland, September 1, 2010 – ABB, the leading power and automation technology group, won an order from Newmont Mining Corporation to engineer three gearless mill drive (GMD) systems to be installed at the Yanacocha Minas Conga oxide copper gold project in Peru.

Gearless mill drives - Grinding | ABB

Go gearless to meet your business objetives by exceeding standard availability targets in your grinding operations. ABB's GMD is the most powerful mill drive system in the market to power semiautogenous (SAG), ball and autogenous (AG) mills, This 'workhorse' for grinding operations combines a robust, service-friendly and fit for purpose ...

Gearless Mill Drive Protection Improvements and Its ...

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Abstract—A cycloconverter-fed gearless mill drive is a drive system that has hardware and software protection functions to protect the equipment in case of abnormal operating conditions, malfunctions or failures. For demanding applications in the mining industry, protections …

When it Comes to Mining, Bigger is Best | PTE

When it Comes to Mining, Bigger is Best Gearless mill drives may be the key to maintaining throughput. Venkat Nadipuram. One of the key challenges in the mining industry today is maintaining throughput in the face of ore grade quality that has declined by …

Gearless mill drives - ABB Group

2 GEARLESS MILL DES The gearless mill drive eliminates ring-gear, pinion, gearbox, coupling, motor shaft and motor bearings, used within a conventional mill drive system. By mounting the rotor poles directly onto the mill, the mill itself becomes the rotor of the gearless …

Training Simulator for Gearless Mill Drives

Skilled and experienced personnel for the Gearless Mill Drive can be a great benefit to your operation. For any intervention on the GMD during operations or mainte-nance, it's necessary to have a broad system knowledge base. In the event of a system failure, decisions must be made quickly and under stress. On the other hand, the

ABB successfully commissions largest gearless mill drive ...

ABB's delivery included one gearless mill drive system (GMD) for a 40-feet semi-autogenous mill and two low-speed dual pinion ring-geared mill drive systems (RMDs) for two 26-feet ball mills; making Mount Milligan's grinding circuit one of …

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.

Siemens Delivers First Gearless Mill Drive System to ...

Sep 13, 2006· For the first time ever a Brazilian mine is set to receive a Siemens gearless mill drive system. The Siemens Industrial Solutions and Services Group (I&S) will equip the mill belonging to the Rio Paracatu Mineração mining company with this technology.

ABB commissions gearless mill drive system in Peru

Baden, Switzerland, June 9, 2008 – ABB successfully completed commissioning of a 16.5 MW gearless mill drive (GMD) system for a 32 feet SAG (semiautogenous) mill at Minera Yanacocha. The mine, located in Cajamarca, Peru, is the largest gold producer in Latin America.

Ring gear drives huge grinding mill | Machine Design

Ring gear drives huge grinding mill. ... gear, as used at Escondida, and a ring motor (gearless drive), either of which wraps around the mill. ... for an adjustable-speed system to 2 million ...

Gearless Drives for Ore Conveying and Grinding - Cmms ...

Fig. 4. Air gap monitoring system in a gearless drive. Gearless Drives for grinding mills. Gearless Drives are well proven stateof- the-art technology for large grinding mills. Siemens, the company that introduced Gearless Mill Drives (GMD) to mining industry started up its first GMD on a ball mill in Norway in 1980.

Increasing Availability through Advanced Gearless Drive ...

The Gearless Mill Drive system consists of the ring motor with its feeding cyclconverter, pre-installed in an E-house. It also includes the excitation rectifier, the automation system (for mill and motor) including HMI, monitoring and diagnostic system, MCC's (for mill and drive auxiliaries), differential

Sentinel: Siemens Gearless Mill Drives - YouTube

Jan 19, 2016· The mills at Sentinel in Zambia are amongst the world's biggest, with 2 off 40 ft SAG mills complete with 28 MW drives, and 2 off 28 foot-ball mills with 22 MW drives. For mines of this size ...

Gearless mill drive system in iron ore ­processing ...

Mar 01, 2012· Gearless mill drive system in iron ore ­processing Diagramm eines getriebelosen Mühlenantriebssystems von ABB # Diagram of ABB's gearless mill drive system ABB was recently contracted to supply gearless mill drive (GMD) systems for two 38 foot semiautogenous grinding (SAG) mills at the Serra Azul iron ore mine in Brazil.

ABB gearless mill drive system to power SAG mill

September 1, 2010 - ABB won an order from Newmont Mining Corporation to engineer three gearless mill drive (GMD) systems to be installed at the Yanacocha Minas Conga oxide copper gold project in Peru. Fluor Corporation in Santiago, Chile, will act as EPCM contractor for this important project; Corporation will be the mill supplier.

Preprint 13-050 - ceecthefuture.org

Presently the gearless drive is more costly than the complete mechanical portion (mill rotating element and accessories supplied by the mill manufacturers) and hence the customer/consultant needs to have two parties to deal with from the start of any project. There is an interface between the mill vendor and the gearless motor supplier.

sag mill motors - rbritiin gearless sag mill slip ring

Sag Mill Wrap Around Motor ABB acquires ring motor business from Alstom Acquisition enables ABB to further strengthen gearless mill drive system business. Zurich . also called wrap-around motor or . is typically fed to SAG . Chatear con ventas » READ MORE

Gearless mill drives - Mining Weekly

Gearless mill drives (GMDs) have been installed on platinum-miner Anglo Platinum's Potgietersrust Platinum (PPRust) 600 000 t/m concentrator.

Revolutionary Drive Controller for Gearless Mills

Ringmotor of the Gearless Mill Drive (GMD) System. CYCLOCONVERTER Principle The Cycloconverter is a frequency changer which converts a poly-phase voltage with the frequency f1 into a single or poly-phase voltage with a different, lower frequency f2. On Gearless Mill Drives (GMD), the operational output frequency varies from 0.3 Hz up to about 6 Hz.

Design review of Gearless Mill Drives - Bopape Eng

DESIGN REVIEW OF GEARLESS MILL DRIVE: MILL SYSTEM ANALYSIS Thulare Bopape, Hennie Klopper Anglo Technical Solutions Abstract: It has been well established that a critical component of the up-front design for large mills is a full system Finite Element Analysis (FEA), including the mill and its bearings, the motor, the foundation and the soil.

gearless mill drives Archives - International Mining

Gearless mill drives (GMDs) are the grinding solution of choice in challenging environments. By eliminating bolt-on mechanical components such as ring-gears, pinions, couplings and gearboxes, GMDs offer ore producers unrivalled availability, efficiency and durability, while reducing operating expenditure, according to GMD provider ABB.

Cobre Panama starts up gearless mill drive systems ...

In all, two 28-megawatt gearless mill drive systems (GMDs) are in use at the mine's 40ft SAG mills, and four 16.5MW GMDs are employed in 26 football mills. "Gearless mill drives are the 'workhorses' for grinding operations, which are at the heart of any mine," ABB's Cobre Panama project manager Rene Chacon said.

Low-speed Gearless Converter Drive

The mill is of the two-compartment type, is 16.5 m long and has a diameter of 4.6 metres. The drive was designed for a speed of 14.6 r.p.m. The reasons prompting the use of a gearless drive were the limited space available, and the difficulties …

gearless Mill drive system - Traducción al español – Linguee

Muchos ejemplos de oraciones traducidas contienen "gearless Mill drive system" – Diccionario español-inglés y buscador de traducciones en español.

Advantages of Gearless Motor Drives in Large Ore Grinding ...

Gearless motors up to 22 MW are in service in many of these ore processing plants. Gearless motor drives are also known as "ring motors" or "wrap around motors." The motor consists of a large number of magnets placed circumferentially on the shell of the grinding mill. This is similar to the rotor of a conventional motor.

2009 Gearless Mill Drives

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 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.

Gearless Mill Drives | Beneficiation | Siemens Siemens ...

The Siemens 42-ft Gearless Mill Drive, still an evolutionary design approach? (SAG Conf. 2015) Optimization of the drive system for a cyclone feed pump (SME 2015) Increasing availability through advanced Gearless Drive Technology (CMP 2014) Design and dynamic behavior of large ring motors for grinding mills (SMMH 2012)