For stator sag mill manufacturer Grasping strong production capability, advanced research strength and excellent service, Shanghai For stator sag mill supplier create the value and bring values to all of customers.
WhatsApp)
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's new Gearless Mill Drive generation: Maintenance-friendly features raise availability and productivity Axel Fuerst, Reinhold A. Errath, Sebastian Gaulocher ... The whole stator bar is "VPIed" including the slot ... SAG Mill Figure 2 Core ...
Reference Rok Zákazník Popis Hmotnost Výběr z již realizovaných zakázek 2017 ABB Mounting block V3200; 3 sets 225 t Foto 2017 Andritz Hydro Stator frame 25,4 t Foto 2017 Maguin ... SAG mill .
Jun 28, 2019· delivered would be around 1.6 x Full load torque, very typical for a ball mill or sag mill.Motorised Liquid Resistance StarterDec 9, 2011 operation of .
Mills and GMDs Maarten van de Vijfeijken* looks at large, larger and the largest units in grinding ore ... GMD for the world's first 42' SAG mill for the Minas Conga oxide gold copper project in Peru. ... After installation, the stator of a 40' SAG mill is over 21 m high OCTOBER 2010 International Mining 31 INNOVATION NEWS.
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 design to provide highest throughput, reliability .
Autogenous mills, semi-autogenous mills and ball mills for wet grinding. A company of Polysius ThyssenKrupp ... driven SAG mill for gold ore grinding. SAG and ball mills for com-minuting gold/ ... of motor stator and motor poles, which are attached to the mill shell. Drive motors
The acoustic sensors are one of the components of the monitoring system on grinding machines. They check the noise issued at the point where the part or dresser touch the grinding wheel. The wide range of acoustic sensors can be applied to grinding machines for internal or external grinding, grinding without centres, grinding for planes, grinding for gears or tools, resolving the most ...
ABB Completes On-Site SAG Mill Motor Rewind at ndida Copper, Wins Service Contract at Goro Nickel Project. ABB recently announced that rewinding of a SAG mill stator at Chile's Minera ndida—the world's largest copper mine—was successfully completed, marking the first time in 40 years of gearless mill drive (GMD) history that the company has performed a stator rewind on-site.
The Ernest Henry SAG mill (11 MW) is currently the largest twin pinion single drive mill installed in Australia. Problems have been experienced with the twin pinion drive at Fimiston and with the ring motor at Cadia. At Cadia, excessive vibration and deflections in the drive stator were encountered during
Dec 04, 2012· ball mill foundation design. ... work of a ball mill. . solutions to SAG mill power and feed problems. As an example, . for overall design of the motor, mill and foundation to ... Antamina – SAG & Ball Mill Gearless Drives Stators Fig. 3: Dominant Mode of Stator Vibration (SAG Mill)
The SAG mill drive is normally designed and optimized for the individual project. The requirement of the special process defines the size of the drive, the reques ted power and the operating speed range. The electric motor creates tension forces in the air gap that tries to pull the stator towards the rotor. Therefore the stiffness of the in-
In June 1998, the world's largest grinding mill, the 40 ft (12.2 m) diameter 20 MW Cadia gearless SAG mill, was commissioned. This was a leap of over 40% above the largest operating SAG mill. A significant saving in capital cost gave the incentive necessary for a single mill line at Cadia, resulting in the selection of the 40 ft (12.2 m ...
Sep 17, 2013· Forum » General Discussion » Starter of SAG Mills with rotor resistance. Topics: Starter of SAG Mills with ... The line commutated inverter is connected to the same feeder that suplies power to the stator, ... I expect that this type of drive would be the most common large mill variable speed mill drive in the world's minerals processing ...
Maintenance on cooper facilities with focus in 20 Megawatts SAG mill Motor. It is a Gearless Mill Drive, main mill of the facility made by AUSTON and ABB Switzerland. ... Performing maintenance in stator windings, electric system protection, protection instrumentation, cooling system, stator and rotor circuit, power transformers 13,8 KV/17 ...
drive stator for SAG mill 12 Ball mill 2 (with stator) and Ball mill 1 . RECENT DEVELOPMENTS – WORKSHOP Early occupation of mine maintenance workshop by the operations team took place in mid-January Other mining support facilities will be progressively occupied in March 2015 13
For example, a SAG mill with an internal diameter of 11 meters will have a critical speed of 12.72 [rpm]. For a Fig. 4, 12-Pulse connection. Twin 6-Pulse cycloconverter-fed synchro-nous machine with 2 stator windings (Shown only one stator A1-B1-C1 winding connected). Fig. 5, 12 Pulse cycloconverter fed synchronous machine with
Mill drive example An example of slip power recovery is the wound rotor motor shown below, one of two for powering a new 10,000 kW SAG mill in Australia as shown in Figure 3. This installation includes: • Two 5000kW six-pole WRIMs with 11,000v stators • A combining gear box driving the mill • One 10,000kW liquid resistance starter (rheostat)
Evaluation of synchronous motors on grinding mills. ... retrofitting a SAG Mill with new contro l was a major ... The stator flux equations are used to identify the cross-coupling occurring ...
foot SAG mill at the Cadia Hill Mine in Australia. While the details vary, there is a theme that links these projects – careful development and analysis, timely results and ultimately the delivery of reliable, efficient gearless drives. Since 1998, Siemens has been providing gearless drive systems for 40-foot SAG mills.
SAG Mill Control: It Shouldn't be that Hard An economically appealing method for improving operations is available without the capital expense — get more out of a mill by applying the advanced control capabilities in the existing plant control system By Andrew Thornton
"Loose stator coils in synchronous motors will generate fairly high vibration at Coil Pass Frequency (CPF) which equals the number of stator coils x RPM (# Stator Coils = Poles x # Coils/Pole). ... When the Sag Mill was in operation the clutch operation just did not look ok and pad wear was uneven.
M&C's scope of work comprised the installation of stator quadrant windings on the four mill motors, which were manufactured by Siemens. The four motors are Gearless Mill Drives (GMD), also known as wrap-around motors, and include two 26 MW ball mill motors and two 28 MW SAG mill motors.
Abstract: Typical drive configurations of high-capacity SAG mills use a two-stator-winding vector-controlled synchronous motor, with a 30° shift between the two windings, fed by a two-secondary delta-delta-wye power transformer and two six-pulse cycloconverters. This paper presents and evaluates three different modeling options for the SAG mill drive.
WhatsApp)
Online Chat
Sales Hotline