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Synchronous cascade drive to SAG mills. The paper coversthe basic components of the drive system and an application overview. Traditional Slip Energy Recover drive had some fundamental design limitations, these have been eliminated with this advanced technology. This technology is being widely used today around the world in the mining
New Human Machine Interface RMD Cockpit. With the RMD plus solution, operations and maintenance activities are fully optimized with the newly developed Human Machine Interface "RMDcockpit".. Based on ABB''s 800xA platform, the RMDcockpit is a specific mill application tool comprised of a touch screen panel allowing full access to the main parameters of the drive system as well as to the ...
The CSE Uniserve Rotor Drive Slip Energy Recovery System (SER) is designed for reliable and repeatable mill starting and speed control and to return all unused energy into circuit below when operating speed. It exclusively offers operators full torque at hyper synchronous speeds. Typical applications include mills, crushers, fans and pumps.
When mill diameter and mill power became again increased, only the Gearless Mill Drive (GMD) could be envisaged to cover this requirement above 10 MW. The GMD is by its nature a variable speed drive system. Process operators, once having the facility of adjustable speed, could not live anymore without it for SAG mills.
SAG mill grinding process Gearless mill drives systems Gold Ore Crusher. GMD system SAG mill. Slip Energy Recovery Drives. These drive systems use slip ring motors and are started similarly using starting resistors, thereby limiting the inrush expenditure for gearless mill drives is typically higher than for other drive systems.
installation of a 40ft, 28MW SAG mill GMD and two 28ft, 22MW ball mill GMDs at Toromocho (Minera Chinalco Peru) at the unprecedented height of 4600m above sea level. by Matthias Neurohr, ABB Switzerland Ltd IRevival of the GMD in cement Mr P Subba Raju, MD Lalitha Cement, and Abdell Ndi, senior sales manager ABB
Responsible for the sale project management of large drives, fixed and variable speed. Examples: 4 off 20,3 MW motors to petrochemical plant, 2 of 3,115 MW 6,6 kV slip energy recovery pump drives. Worked on a variety of problems arising from integrating motors with early VSDs.
Preprint 13050 UPDATES ON GEARED VS GEARLESS DRIVE SOLUTIONS FOR GRINDING MILLS R. Kalra, CITICHIC Pty Ltd, ... comparisons and attempts to dispel some of the myths regarding Slip Energy Recovery (SER) and variable frequency drive technology on ... SAG mill conference, provided details of the then largest gear drive in operation on a SAG mill ...
with a minimum wear of brushes and slip rings, drastically reducing mills downtimes due to maintenance. On some speed variation range, Slip Energy Recovery (SER) systems can be used together with traditional starting system (LRS) with the objective of recovering dissipated energy from the rotor circuit towards the main bus bar. Fixed Speed
Sep 17, 2013· For now I am working on a mining project which involves starting two SAG mills, the method of starting these mills is by rotor resistance and likewise we are using an energy recovery system (SER), could someone tell me how this system works SER? each mills have two motors of 8000 kW at kV. thank you for all.
The motors are not described in detail, but the paper does mention a problem with "SER", which usually stands for "slip energy recovery", suggesting that the SAG mill .
MW). It has been the industry standard for SAG mills above 13 MW capacity. However, pinion systems to 8 MW per pinion and dual motor systems with quadruple pinions extend the range of gear driven mills to a theoretical limit of 32 MW. The Ernest Henry SAG mill (11 MW) is currently the largest twin pinion single drive mill installed in Australia.
(SAG) and Ball mills. Traditionally moved through a girth gear either with single or dual pinion, there are several variable speed drive trains alternatives in the market: a) using gearboxes attached to high speed Squirrel Cage (SC) motors with VFCs or Wound Rotor Induction Motors (WRIM) using slip energy Recovery (SER)
with your Wound Rotor Motor. Choose from: Liquid Rheostats Slip Energy Recovery Systems Soft Starters Dual Load Sharing, Running Duty, or Starting Duty Secondary Resistance Controllers A variety of enclosure options are available to provide protection to your .
Miningspecific solutions From electrical to digital solutions As one of the major suppliers of the global mining industry, we offer a comprehensive solutions portfolio that enables you to effectively meet your challenges at each process stage, from extraction to transportation and beneficiation.
Modern mill operators in mining and mineral processing require a specific range of mill speed to achieve the best grinding performance and reduce mill liner wear. With the latest generation technology and significant investment, CSE Uniserve created the Modern Slip Energy Recovery (SER) Drive which offers extensive speed control and no ...
Energy recovery potential in comminution processes. Author ... The resulting effect of expanding the control volume to include the two ball mill circuits on the annual energy recovery potential is a recovery of GW h for the SAG mill circuit and GW h for the SAG/ball mill set or a potential annual energy saving at 20 cents/kW h of ...
A full investigation into on a dual (2 x 3,6 MW, 11 kV) Slip Energy Recovery ("SER") drive grinding mill was prompted by the failure of a pinion during drive commissioning. This paper gives an overview of SER drive principles and the stress imposed on SER drives during supply disturbances.
WEG offers the most reliable and efficient solutions for milling plants for ferrous and nonferrous products with their experience of mill drive systems. In the heart of a processing plant, the ball and SAG mills must be driven by solutions that adapt to the characteristics of the minerals in line with the whole process.
The flexible Slip Energy Recovery Drive (SER) enhances the tradi ... • SAG mills and ball mills in the mining industry, where an increase of efficiency and productivity is desired while availability is maintained ... of Siemens AG or supplier companies whose use by third
OCEANAGOLD COMMENCES MILLING AT DIDIPIO (MELBOURNE) OceanaGold Corporation (ASX: OGC, TSX ... • Rock has been introduced to the SAG Mill with the SAG Mill and Slip Energy Recovery (SER) system commissioned • SAG Mill has been operated in closed circuit with the cyclones • Ball Mill has been commissioned and the initial ball charge loaded ...
The Slip Energy Recovery Drive ( Drive) is a technology well proven in the industry for large power motoring systems that allows precise motor speed control at the same time that recover the slip energy in the wound rotor induction motors (WRIM). The typical applications include SAG mill, AG mill and ball mill.
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, servicefriendly and fit for purpose design to provide highest throughput, reliability .
Slip Energy Recovery of an Induction Motor Slip Energy Recovery is one of the methods of controlling the speed of an Induction motor. This method is also known as Static Scherbius the rotor resistance control method, the slip power in the rotor circuit is wasted as I 2 R losses during the lowspeed operation. The efficiency is also reduced.
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