+ Automation Specialist Engineer for commissioning SAG Mill 01, Ball Mill 01 and Ball Mill 02 Siemens Gearless Drives. + Supervision and execution of preventive and corrective maintenance plans for mills BALL01, BALL02 and SAG01 for three years (2013, 2014 and 2015).
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
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%.
Guerrero and Pontt investigated the oscillatory torque caused by dead time in the current control of a high-power gearless mill drive. Szolc et al. examined the interaction of the electromechanical coupling of an asynchronous motor drive system. Laylabadi and Symonds analysed the control system of an 18 MW ball mill drive system.
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 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
Executed the practical part of the "Field Service Certification program for Gearless Mill Drive (GMD) System" on Panama project as Junior commissioning engineer, between March to May 2019. Performed following activities together senior engineer Michel Garnier: • Cold & hot Commissioning tasks. • Fine Tuning tasks.
The Siemens Drive Technologies Division is delivering an Integrated Drive System for two new mills for the Toromocho mine in the Peruvian province of Yauli. The order comes from Minera Chinalco Per S.A., a subsidiary of Aluminum Corporation of China (CHINALCO). In future, two gearless mill drives and Sinamics cycloconverters will be used in the ...
Gearless pendulum roller mill. Patented Direct Drive system of the mill with multipole synchrone motor; Simplified mill design, eliminating e.g. gearbox, couplings and oil lubrication; Variable grinding speed for optimized process conditions; Maintenance. Drive and mill rotor with pendulums, are completely removable in one step for efficient ...
Muchos ejemplos de oraciones traducidas contienen "gearless mill drive system" – Diccionario español-inglés y buscador de traducciones en español.
The drive system on ABB GMDs - including the gearless motor - does not require any lubrication, thus reducing maintenance costs. The GMD is designed to run the mill with variable speed, in both directions of rotation, meaning the grinding process can be optimised at any time during the mine's life.
Index Terms: Cyclo-converter, multilevel Inverter, and Gearless Mill Drive INTRODUCTION For ore grinding operation in Mines, large Grinding mills are used driven by Induction and synchronous motors of max of 38 MW but for low speed. The reliable operation of the drive is essential to prevent business interruption loss which can be huge.
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 …
gearless mill drive system. ABB's delivery included one gearless mill drive system GMD for a 40feet semiautogenous mill and two lowspeed dual pinion ringgeared mill drive systems RMDs for two 26feet ball mills making Mount Milligan's grinding circuit one of the most advanced and powerful in North America Read more.
The GMD eliminates all mechanical components of a conventional mill drive system. By mounting the rotor poles directly onto the mill, the mill itself becomes the rotor of the gearless motor.
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 ...
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 …
RE: Protest 0025; Gearless Mill Drive Dear Port Director: This is our decision on Protest 0025, filed against your classification, under the Harmonized Tariff Schedule of the United States (HTSUS), of parts and components of a …
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 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 …
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 special or abnormal operating ...
The $1.2 billion expansion, which saw throughput rise from 60,000 t/d to 120,000 t/d, involved the addition of two new thyssenkrupp-made ball mills, with ABB providing the gearless mill drives (GMD) technology. This came on top of the 33 mills the miner already had up and running as part of the existing 60,000 t/d plant at the operation.
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.
Acerca de. Master's student of control and automation engineering. Electronics engineer. CIP 246576. Trainee at ABB Switzerland. Gearless Mill Drive - Electrical. System 800xA. Experience in commissioning and start-up of polymetallic plants, GMDs, process control, electrical systems, LV drives, instrumentation and third party integration.
Commissioning and start-up of Canada's first gearless mill drive (GMD) system has been completed at Osisko Mining Corp's Malarctic project and will increase production capacity at the mine.
August 18, 2011 - ABB won an order from Newmont Mining Corporation to deliver three gearless mill drive (GMD) systems for installation at Yanacocha s Conga copper/gold project in Peru. It is a follow-up order from the contract for the GMD system engineering that ABB received in August 2010.
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.
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.
Figure 4: Gearless Mill Drive (GMD), courtesy of ABB Figure 4 shows a typical gearless mill drive (GMD) featuring so called ring motor (introduced in 1969 by ABB): the rotor poles are fixed directly to the mill shell and the stator is wrapped around it.
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