Gearless Mill Drive So sánh

The engineering and process effects of choosing a …

fixed-speed or variable-speed mill drive requires the speci-fication of several important engineering values: the motor rated output power, motor rated speed and the motor maximum speed. The motor rated output torque is calcu-lated using these specified values as shown in Equation 1. This applies whether purchasing a large Gearless Mill Drive

The Siemens 42ft gearless mill drive, still an evolutionary …

mill The result is the design of a Gearless Mill Drive motor for a 42ft Grinding Mill providing up to 35MW of power. Evolution is still the main GMD design philosophy, but realistic and …

Increasing Availability through Advanced Gearless Drive …

Siemens' gearless drive technology of 99.46 to 99.71% - as confirmed by real operational data from the Antapaccay mine in Peru. It was the first plant worldwide to use gearless drives for both applications. KEYWORDS Gearless Mill Drives, Gearless Conveyor Drives, Availability, SAG Mill, Ball Mill, Overland Conveyor, Antapaccay 15

GMDs: the driving force behind sustainable mill …

Gearless mill drives (GMDs) constitute a compelling alternative to traditional ring-geared mill drives (RMDs) in such environments. Both drive types can be used to …

The Siemens 42ft gearless mill drive, still an …

sured on a real operating GMD at Goldcorp's Peñasquito mine in Mexico. The quality of the tuned FE-model is demonstrated by a Campbell diagram showing a very good correlation between measured and calculated natural fre-quencies. Keywords Gearless Mill Drive, GMD, 42ft Mill size, Siemens, condition monitoring, finite element analysis, ring motor.

The Case for Going Gearless | E & MJ

Gearless drive systems for conveyors or mills can simplify installation, increase machine efficiency and reduce maintenance costs, according to a company that's been a pioneer in the technology. A Siemens gearless drive system powers a. 6.5-km-long overland conveyor belt at the. Antapaccay copper project in Peru. With.

High voltage motors for mills More for mining

is currently the gearless mill drive (GMD). In GMD systems the motor's poles are directly installed on a pole flange on the mill shell, and the body of the mill itself becomes the rotor. Ring-geared mill drive For mills with standard diameters or requiring less than 20 MW (approx.) of power, ring-geared mill drives (RMDs) offer the best solution.

Mill drives: the desire for increased power and the

speed (expressed as mill speed in the case of gearless mill drives, (GMDs), and shell liner/lifter wear so that the ex-pected range of operating conditions can be accommo-dated once the mill diameter has been set. In this respect, the ratio of mill diameter to mill length EGL is important as it affects selection of the rated speed. The progress of

SIMINE Gearless mill drives

operation, the SIMINE Gearless mill drive stops the mill with balanced charge, and with no time-wasting oscillations.In creep-ing mode at 0.3 rpm, the operator can directly control …

ABB acquires Alstom ring motor business

Gearless-mill-drive. Alstom. Bilbao. Process-automation. Ring-motor. COMMENTS. ABB has acquired Alstoms ring motor business, a move the company said will enhance its gearless mill drive (GMD) system business.

Future of mining | ABB

The Gearless Mill Drive can be monitored anywhere anytime. This means greater drive efficiency and availability, with reliability pushed to nearly . Downtime is inevitable, but it can be dramatically reduced using …

ABB Expands Ring Motor Portfolio with Alstom Acquisition

Power and automation technology group ABB reported that it has acquired Alstom's ring motor business to enhance its gearless mill drive (GMD) system business. The parties agreed not to disclose financial details of the transaction. The business, based in Bilbao, Spain, has about 120 employees and will become part of ABB's Process Automation ...

Modernization of mill drive systems in minerals

levels of competence and confidence in Freeport's project team before executing any site works. Order: A modernization concept for a gearless mill drive that retains most of the existing electrical equipment Solution: • PLC system upgrade from SIMATIC S5 to SIMATIC S7 • Specially manufactured I/O adapters from S5 to S7

Mill drive selection for semiautogenous grinding mills

gearless ringmotor. Typical gear driven mill and gearless mill with a ringmo-tor are shown in Figs. 1 and 2. Early SAG mill designs using gear drives were limited in the amount of …

ABB celebrates 10 years since it reacquired GMD ring motor …

Posted by Paul Moore on 31st July 2023. ABB is celebrating the 10th anniversary since it reacquired ownership of a key gearless mill drive (GMD) system business in Spain on July 30, 2013, which combined the leading ring motor product from Alstom with ABB's electrical offering for GMD systems. The technology leader marks the …

Cycloconverter Fed Capacitor Start Capacitor Run Induction Motor Drive

Cycloconverter is a naturally commutated converter with bi-directional power flow capability. There are variety of applications of cycloconverter such as gearless motor drive in cement industry, centrifugal pump, electric traction, rolling mills, variable speed constant frequency (VSCF) system, ship propellers etc. Evaluation of cycloconverter fed …

ABB's new Gearless Mill Drive generation: Maintenance …

combined with other service activities. The success of the rapidly evolving solid gearless mill drive (GMD) services - as is being demonstrated at the Yanacocha mine - is …

Vrmi b10023 00 7600 Simine GMD 144dpi | PDF | Electric Motor | Mill

The result: The first gearless drive for a 40-ft SAG mill was installed at Newcrest Mining's Cadia Gold Plant in Australia. The drive provides nominal power of 20,000 kW to the mill shell. The gearless drive for Cadia's 40-ft SAG mill has been running since 1999 at optimum availability and to the complete satisfaction of the user.

Revolutionary Drive Controller for Gearless Mills

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 …

Comminution power – geared versus gearless

Comminution power – geared versus gearless. Posted by Paul Moore on 27th February 2023. It is well known in the mining industry that the biggest mining concentrators, with the highest throughputs and …

ABB in Mining

Insurability of large gearless mill drives (English - pdf - Technical publication) Remote diagnostic services for gearless mill drives (English - pdf - Technical publication) Measuremens at a state of the art 2x5 MW dual pinion mill drive (English - pdf - Technical publication) Mineral Processing Plants (English - pdf - Reference list)

CMP Paper 16.10.09 Final

Central Drive Single Pinion Dual Pinion Gearless Number of mills Power [MW] 4 Figure 1: Typical mechanical mill configurations The central driven mill solution is found on the lower power range of the mills due to the high torque that has to be transmitted to the mill through the torque tube at the charge or discharge side of the mill.

gearless mill drive

Many translated example sentences containing "gearless mill drive" – Spanish-English dictionary and search engine for Spanish translations.

René Chacon, ABB, Switzerland, details how gearless …

the mill circumference. Cooling units located on the bottom of the machine facilitate maintenance and ensure that in an unlikely situation where there is a water leakage, liquid will not enter the machine. ABB's gearless mill drive offering is part of the innovative ABB AbilityTM MineOptimize portfolio. MineOptimize is a

TECHNICAL AND COMMERCIAL BENEFITS OF …

gearless motor mounted directly onto the mill. In addition, a gearbox can be used to reduce the speed of a high speed motor. This gearbox is then placed between the high speed motor(s) and pinion(s) and the low speed shaft driving the ring gear. Thus, there is the decision between gearless drives and drives using a gear, and, if gear driven,

Gearless mill drives

Our GMD 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 …

ABB's Gearless Mill Drive Ring Motor factory in Bilbao

Building on over 130 years of experience in the mining industry, ABB's Ring Motor factory located in Galindo provides the engineering and manufacturing of ring motors, the main component of ABB's Gearless Mill Drive (GMD) systems manufactured by ABB for the mining sector. The 20,000 m2 plant manufactured over 110 motors delivered in over 25 …

CONGA: THE WORLD'S FIRST 42 FOOT DIAMETER 28 …

This paper presents the technical details of the world's first 42 foot diameter 28 MW gearless SAG mill, installed at the Conga copper-gold project in Peru. It explains the challenges and solutions for designing and operating such a large mill, and how it delivers high efficiency and low maintenance costs.

Acionamento sem engrenagens para moinhos

Máxima produtividade e disponibilidade. Passe a operar sem engrenagens, para atingir suas metas comerciais excedendo as metas de disponibilidade padrão em suas operações de moagem. O GMD da ABB é o sistema mais potente de acionamento de moinhos no mercado para alimentar moinhos semi-autógenos (SAG), de esferas e autógenos (AG).

Gearless mill drives

GMDs: 22 MW GMD for 28' ball mill 28 MW GMD for a 40' SAG mill 28 MW GMD for 42' SAG mill Whether it is size or an installation at the highest altitude (4600 m.a.s.l.), ABB's …