Gearless Mill Drive Sales Rev Up to Meet Demand By Russell A. Carter, Managing Editor. Gearless mill drives are becoming the drive system of choice on large AG, SAG and ball mill installations for new projects and existing mill expansions. At least 31 GMDs have been ordered from Siemens and ABB, for …
Get PriceThe Siemens 42ft 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)
Get PriceJul 07, 2016· In Chile, in Anglo American’s Los Bronces mine, Siemens Gearless Mill Drives have been implemented for the Confluencia concentrator plant. Siemens GMD's are essential pieces of equipment for the ...
Get PriceThe 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 longterm service agreement (LTSA). This is expected to reduce operating costs, improve process throughput and reliability while saving energy and keep equipment in top form.
Get PriceJun 30, 2014· ABB’s delivery included one gearless mill drive system (GMD) for a 40feet semiautogenous mill and two lowspeed dual pinion ringgeared mill drive …
Get PriceMilling Machines Tools ThomasNet News gearless mill drive Optical Systems ,Gearless and absolutely rigid torque motor drives C axis; compact, zero backlash Harmonic Drive drives B axis; and linear motor drives , Standard 112 kW vector drive system provides 62 Nm peak torque for milling and boring, while 20pocket, servodriven tool changer swaps tools in 08 sec , For submicron accuracy ...
Get PricePresently 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.
Get PriceGearless 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.
Get PriceABB’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.
Get PriceThe Gearless Mill Drive system consists of the ring motor with its feeding cycloconverter, preinstalled in an Ehouse. 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),
Get PriceThe Siemens Drive Technologies Division has commissioned a gearless belt conveyor system in the Antapaccay copper mine in Peru. This is the first largescale reference for this technology outside ...
Get PriceApr 24, 2008· Baden, Switzerland — Gearless mill drive systems will maximize productivity and energy efficiency at a new copper mine in northern Brazil. ABB says it recently won an order from Vale (formerly CVRD) to deliver such a system to the Salobo mine, located at …
Get PriceABB recently won an order worth 44 million US to deliver three gearless mill drive systems (GMDs) for a new copper mine to be operated by Kazakhmys PLC (Kazakhmys) in southeastern Kazakhstan. The contract was awarded in the first quarter of 2012. Kazakhmys is the largest copper producer in Kazakhstan and one of the top copper producers in the ...
Get PriceSep 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 (IS) will equip the mill belonging to the Rio Paracatu Mineração mining company with this technology. The “Simine Mill GD” drive …
Get PriceGearless mill drives (GMDs) have been installed on platinumminer Anglo Platinum's Potgietersrust Platinum (PPRust) 600 000 t/m concentrator.
Get PriceRingmotor of the Gearless Mill Drive (GMD) System. CYCLOCONVERTER Principle The Cycloconverter is a frequency changer which converts a polyphase voltage with the frequency f1 into a single or polyphase voltage with a different, lower frequency f2. On Gearless Mill Drives (GMD), the operational output frequency varies from Hz up to about 6 Hz.
Get Pricegearless mill drive comparison natureslimsecretscoza. gearless drive mills and crushers dzerveu Know more, Siemens is now able to provide to mining companies a gearless drive system for SAG mills with a tube diameter offeet This enables throughput to be almost doubled in comparison with thefoot mills commonly used today With this, Get Price.
Get PriceInsurability of large gearless MILL drives698 Кб. Figure 1 – The gearless mill drive 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.
Get Pricethe speed control system, behaves like a DC machine. The TRANSVEKTOR control system used on highpower mill drives has gone through a long development phase. A lot of experience has been gained with this system during the last 33 years. The first gearless drive with this control has been operating successfully for more than 30 years.
Get PriceThe gearless drive system includes four lowspeed synchronous motors ( MW, 66 rpm) and the associated SINAMICS SL150 converters. ... The gearless mill drives operate more energy efficiently, having a 5% higher efficiency factor than conventional drive systems.
Get Price1 day ago· Two 28 MW gearless mill drive systems (GMDs) are operating in the company's 40 ft SAG mills and four MW GMDS are employed in 26 football mills along with associated control systems. "Gearless mill drives are the 'workhorses' for …
Get PriceThe reliability of large diameter, high horsepower ball mill is paramount when large production and minimum downtime is required. The 17 ft. x 56 ft. double compartment ball mill at St. Lawrence Cement Company has the first gearless drive built in North America and has the world’s largest hydrodynamic bearings currently built and running.
Get Pricegearless ball mill drive geared vs gearless drive solutions for grinding mills. Gearless mill drives Grinding ABB. ABBs 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, servicefriendly and fit for purpose design to provide highest throughput,
Get Price6 hours ago· In all, two 28megawatt gearless mill drive systems (GMDs) are in use at the mine's 40ft SAG mills, and four 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.
Get PriceBaden, 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.
Get PriceGearless mill drive system (GMD) Maximum availability and productivity . 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 ...
Get PriceMarsh 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
Get Price2 GEARLESS MILL DES The gearless mill drive eliminates ringgear, 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 motor. Building a track record
Get PriceMetals Drive Systems. ... fed by GE's MV7000 Medium Voltage drive is one of the latest solutions designed and offered by GE for all rolling mill applications. As the induction motor provides more availability, reliability, lower maintenance and reduced electrical distribution equipment, this solution can contribute to significant savings for ...
Get PriceDESIGN 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 upfront 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.
Get PriceThe 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 football mills with 22 MW drives.
Get PriceFig. 4. Air gap monitoring system in a gearless drive. Gearless Drives for grinding mills. Gearless Drives are well proven stateof theart 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 …
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