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.
ABB commissions gearless mill drive system at Peru's Jun 9,, ABB announced it has successfully completed commissioning of a 165 MW gearless mill drive (GMD) system for a SAG (semiautogenous) mill. Live Chat. The engineering and process effects of choosing a motor design
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.
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
A gearless mill drive is a major investment for a plant and as the beating heart of the production process is essential. Thus, having knowledge of how to make most of your GMD is crucial. The following advanced digital service can enable optimized productivity at the highest level:
GEARLESS MILL DRIVE (GMD) SYSTEM, ELECTRICAL AREA ABB SWITZERLAND Issued Sep 2017. Credential ID n/a RM3 Project Risk Management ABB Project Risk Management Steering Comittee Issued Feb 2012. Credential ID n/a AC800 PEC Control Builder ...
GE's LV7000 Low Voltage drives cover the needs from 0.75kW up to 3.6MW and can substantially improve the quality and efficiency of our customers' process or production. All GE's AC drive ranges (low and medium voltage) can be either stand-alone or connectable to a common DC bus system. GE's DC bus system concept reduces the overall AC power ...
Commissioning Variable Speed SAG Mill Gearless Drive. The electric operation and design features of the 11,000 H.P. variable speed SAG mill gearless drive is presented. The function of the frequency-converter, control system drive and lubrication systems are described. An analysis of the harmonic characteristic in the Supply System and Motor is ...
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.
By modernizing its gearless mill drive with the new Sinamics SL150 converter, cement manufacturer Rohrdorfer Group has increased the availability of its plant without the need to interrupt on-going production. The world's first ring motor from Siemens has been doing stalwart service for over 45 years at the cement works in Rohrdorf, Bavaria.
Gearless mill drive order - Cement Lime Gypsum ABB has received an order for the first gearless mill drive (GMD) system ever to be installed in an Indian manufacturing plant. …
The ABB gearless mill drive (GMD) is the most powerful mill drive system available, combining the highest levels of efficiency, reliability, flexibility and availability. 3 Competence in grinding For many decades, ABB's optimized mill drive solutions have consistently set new productivity
Electrical engineering for mill auxiliary system and ringmotor instrumentation. Interface and design review meetings held together to… Project engineering, service and commissioning for Drive Sytems focused on Gearless Mill Drives (Non-geared mill motors for mining industry, grinding applications).
814 IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, VOL. 43, NO. 3, MAY/JUNE 2007 Operation of High-Power Cycloconverter-Fed Gearless Drives Under Abnormal Conditions Jorge O. Pontt, Senior Member, IEEE, José P. Rodríguez, Senior Member, IEEE, Jaime C. Rebolledo, Student Member, IEEE, Kurt Tischler, and Norbert Becker Abstract—This paper presents the behavior of large …
- Control system upgrade for SAG mill - Codelco Andina, Chile - Control system upgrade for 2xSAG mills - Minera Candelaria, Chile - Gearless Mill Drive System Test, Kolskaya Project - Saarbrücken, Germany - Technical assistance, Ivanhoe Oyu Tolgoi Project – Gobi Desert, Mongolia - Gearless Mill… Main activities and responsibilities:
Gearless mill drives - ABB. The ABB gearless mill drive (GMD) is the most powerful mill drive system available, combining the highest levels of efficiency, reliability, flexibility and availability. ... expansion and a lower resistance of the copper …
FQM has opted for Siemens Gearless Mill Drives to be used in the two SAG mills having a diameter of 40 feet and an output of 28 MW and the two ball mills with a diameter of 28 feet and an output of 22 MW. With these mill drive systems there is no wear in the drive train since all forces are transferred touch-free via a magnetic field.
ABB Motor Gearless Mill Drive GMD System
Gearless mill drives • 28 MW GMD for 42 SAG mill Whether it is size or an installation at the highest altitude 4600 masl ABB's GMDs are well positioned to contribute to the building of larger and ever more powerful mills Leading the gearless mill drive evolution The ABB gearless mill drive GMD is the most powerful mill drive system available
ABB gearless mill drive systems feature numerous benefits when compared with conventional geared drive systems: superior reliability also with weak networks, increased process availability, extended life span and improved energy efficiency. Furthermore the system brings advantages such as optimal space conditions, a minimum number of spare ...
Newmont Mining Corporation selects ABB to design three gearless mill drive systems for their new high-altitude copper gold project in Peru. 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.
1 – Ring Motor and Mill Complexities. We have been fortunate to undertake detailed mechanical and structural design reviews and audits of all mill types from the five major mill vendors and of ring motors from both the gearless drive vendors. We have also been hired by mine owners to determine the causes of most of the major modern mill and ...
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 …
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%.
Gearless mill drive order. ABB has received an order for the first gearless mill drive (GMD) system ever to be installed in an Indian manufacturing plant. The order was placed at the end of October 2009, by the Indian cement manufacturer Lalitha Cement Ltd. (LCL), located in Hyderabad, the capital of the Indian state of Andhra Pradesh.
GMD technology for Minera Escondida. ABB gearless mill drive, installed 2002 at the Minera Escondida in Chile. ABB announced that it will supply a new 15.7 MW gearless mill drive (GMD) system for a 26 ft ball mill, including transformers, ring motor and a complete electrical room entirely equipped, to Minera Escondida/Chile.
The Truck Trolley System helps deliver copper ore in the form of rock particles in the open pit to the crushing/conveyor system. The gearless mill drives for...
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 systems need to be reviewed considering ...
Gearless mill drives are a well established solution for grinding applications in the minerals and mining industries. The paper describes the functionality and technical features of such drive systems as well as their advantages compared to other drive solutions. Due to the variable speed operation the grinding process can be optimized for ores with varying grinding properties.
ABB announces that it has won an order for the first gearless mill drive (GMD) system ever to be installed in an Indian manufacturing plant. The order was placed at the end of October, by the Indian cement manufacturer Lalitha Cement Ltd. (LCL), located in Hyderabad, the capital of the Indian state of Andhra Pradesh.
Simine Mill GD provides a gearless drive with no mechanical parts between the motor and the mill. Stepless adjustment of the rotational speed aids optimum start-up and means that the system can be controlled in accordance with the varying demands of the material in the mill. This reduces wear, maintenance and energy consumption.
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.
The gearless mill drive 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 mill drive system in iron ore processing. 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. The Serra Azul mine unit, owned by MMX Mineração e Metálicos, an EBX Group company, is located in the iron quadrangle of ...
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.
SAG MILLING – Gearless drive system from ABB. WESTERN AUSTRALIA - Five years in storage have failed to affect the performance of the ABB gearless drive on a SAG mill at the St. Ives gold mine belonging to GOLD FIELDS of South Africa. The mill was originally ordered in May 1997, but shortly before the manufacturing was completed, the then ...