ГЛАВНАЯ gmd sag mill slip energy recovery

gmd sag mill slip energy recovery

Planned Maintenance Systems & Solutions In Australia | CSE ...

Rotor Drive Slip Energy Recovery: QLD: SAG Mill sub and hyper synchronous speed control and starting with Unistarter LRS. Water: Fuji LV Drives: QLD: Specified drives due to ongoing reliability and locally-based service and support. Mining: Rotor Drive Slip Energy Recovery: QLD: Pump drive and energy recovery. Mining: Transformers: QLD

GEARS & DRIVES IRevival of the GMD in cement

SAG mills) as well as the way the poles are mounted depends on the size of the motor. Figure 3 shows the mounting of poles on a large SAG mill. All rotor poles are connected in series and powered from sliprings with a DC current to produce a static magnetic field. Brushes connect the slip rings to the field supply unit located in the cyclo

hyper synchro drive sag mills - halcyomed.ch

SAG 2011 paper #144 542 views. Share; Like; Download ... John Hadaway ... As a result of this the decision was made to use matched drives and bearings on the SAG and ball mills. The drive design was optimised to provide maximum interchangeability. ... and the final selection was the IES Hyper- Synchronous drive Slip Energy Recovery (SER) in ...

Typical Load Factor For Sag Mill Motor

A comparison of SAG mill power models - SAGMILLING.COM. SAG Mill power draw models are used in mill design and grinding circuit .... The power numbers by Barratt & Sherman are fitted to "normal" cone- ... model consists of a friction balance between concentric layers within the rising part of the mill load. ... conversion factor of 0.931 between motor input (C-model result) and mill...

to Build Largest SAG Mill for Newmont's Minas Conga ...

The 42-ft-diameter SAG mill, according to , will be the world's largest and the first of its kind. The Conga project is located approximately 560 miles (900 km) north of Lima, at an altitude of 13,400 ft (4,100 m) above sea level. It is situated near the Newmont Yanacocha gold mine, where installed what was then the world's ...

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Electrical4U is dedicated to the teaching and sharing of all things related to electrical and electronics engineering. To learn about basic Electrical Engineering, check out our articles on Voltage, Transformers, Electrical Symbols, Alternators, DC Motors, Induction Motors, Star Delta Starter, Lenz's law, Faraday's law, and DOL Starters.

TMdrive -10SPR Product Application Guide

energy, and can perform additional VAR compensation Application 2. Slip Power Recovery Drive System for a grinding mill SAG Mill and Motor The Best Solution: TMdrive-10SPR for each pump • The SPR drive carrying slip power is much smaller and less expensive than an MV drive carrying all the motor power at full speed (4 kV voltage)

SAG mills - Outotec

Gearless mill drive (GMD) technology has further expanded the use of large SAG milling allowing Outotec to produce the world's largest SAG mill of 42' in diameter drawing power at 28 MW. Today, Outotec is the world leading supplier of gearless SAG mills operating globally.

Energy Efficiency Survey Asarco - Lincus, Inc.

CASE STUDY Energy Efficiency Survey Asarco, Hayden and Ray Mines, AZ Situation Asarco's Hayden and Ray facilities (each at 35 MW) are actively involved in developing ways to produce energy-intensive copper at a reduced rate. The Hayden facility operates using a concentrator and copper smelter, an oxygen flash furnace, anode casting, oxygen plant, acid plant, […]

(PDF) Autogenous and Semi-Autogenous Mills, 2015 Update

GMD SAG mills have bee n sold in sizes from 8,20 0 kW (11,000 HP) through 28,000 kW, (37,548 HP). The first SAG mill to utilize a GMD motor design were the two 32' x 17' (1 5' EGL) - 8,2 00 kW

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Patientenbeauftragte der Bundesregierung. ©. Jan Kopetzky. Prof. Dr. Claudia Schmidtke wurde 1966 in Neumünster geboren. Nach ihrem Abitur studierte sie Humanmedizin an der Universität Hamburg. Ihre Ausbildung zur Fachärztin für Herzchirurgie, Promotion und Habilitation absolvierte sie an …

Electrodrives - Medium Voltage Variable Speed Drives and ...

New 6500 kW SER Drive for a SAG mill finishes the FAT at ElectroDrives' premises. Last February we successfully completed in our Madrid plant the FAT of a new SER Drive (Slip Energy Recovery Drive) for a 6500kW SAG mill. This drive will allow the mill to operate at variable speed, increasing the efficiency of the grinding process.

Peter Warner - Expert Consultant - Martec | LinkedIn

The first 40' GMD, on a SAG mill in Australia, failed due to "sub harmonic resonance". Engineers are aware that a harmonic of an excitation may excite a system into harmful resonance. ... This paper reports on the requirements to be considered by the designer of an electric motor for use in a slip energy recovery speed control system. The ...

mills variable speed drive

Gearless mill drives - Grinding | ABB. 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 …

PulseTech | Electrical Engineering Solutions | Australia

Slip Energy Recovery Drives. ... maintenance and Inspection service to study the performance and manage the reliability of LRS for 2 x 4.2 MW Ball Mill. Project Details. Commissioning for Conveyor Drives MV Variable Speed Drives (VSD) ... Remote Commissioning for SAG and Ball Mills MV Variable Speed Drives (VSD) Gold Mine, Kyrgyzstan ...

CMP Paper 16.10.09 Final

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, …

SAG Mill Process Control - Grinding & Classification ...

For SAG Milling, optimizing the throw and converting the available electrical energy (installed motor power) to potential energy (height of throw, trajectory) to kinetic energy (rock breakage) is the key function. Therefore, having a speed range available allows this tuning of the SAG mill.

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Technical and Commercial Benefits of Gearless Mill Drives ...

Picture of a typical GMD system for a SAG mill reliability and availability at competitive cost. Figure 2 presents the power circuit of a cycloconverter fed The first Gearless Mill Drive (GMD) with a power of 6.5 MW was ... The switch-over to the slip energy recovery system can be pinion through a main gearbox ...

Equipment Simulation | Mill (Grinding) | Mining

points fitted with Austin model 2.2.2 Impact breakage function In AG/SAG mills, there are two main breakage mechanisms: impact (high energy) and abrasion (low energy). For impact breakage mechanism, JKMRC institute is using the model of the percentage of broken product passing 1/10 the original particle size, t10 .

Preprint 13-050

Among the many reasons that geared drives on large SAG mills are not favoured, is due to not having an efficient variable speed drive ... comparisons and attempts to dispel some of the myths regarding Slip Energy Recovery (SER) and variable frequency drive technology on ... Mill. In this case the GMD requires slightly less space but it does

Pinion Drive Sag Mill - mayukhportfolio.co.in

The resulting mill design was 6.1m dia x 9.05 EGL SAG Mill with a 5.2MW ... with an identical structure, trunnion bearings, girth gear, pinion and pinion bearings. ... of installed power included a Hypersynchronous Slip Energy Recovery Drive...

frequency convater how use in cement ball mill

Mar 23, 2016· Engineering and Installation of Medium Voltage Drive for SAG Mill & Ball Mill Ingeteam successfully engineered and installed the main drive equipment for a 2.3 MW SAG mill and a 2.1 MW ball mill in Russia (Rudnik Alexandrovsky Mine, Zapadnaya Gold Mining Ltd.). Get More

Benefits of continuous data acquisition from critical ...

Figure 4: Two SAG Mills 24MW each and Two Ball Mills 16.4 MW each with Gearless Mill Drives For larger applications the well-proven Gearless Mill Drive (GMD) technology has shown to be very effective since its introduction in mining in 1980; currently in operation for horizontal mills up to …

'SER' – Slip Energy Recovery Grinding Mill Speed Control

With our SAG mill running at 65.4% critical speed (mill @ 8.7 RPM), the SER motor speed reference is 850 RPM or 85% of 1000 RPM. We are recovering approximately 1.2 MW of slip energy; the power ...

Environmental and Social Review Summary

grinding (SAG) mill with gearless mill drive (GMD) to increase the existing plant capacity from 8 kt/d to 12 kt/d. This expansion has been sized to accommodate the proposed Phase 2. Phase 1 also includes the addition of three leach tanks, new tailings facility capacity, new process water pond and upgrades to some reagents' areas.

About Us - ElectroDrives SL

Currently, ElectroDrives is focused on the design, manufacture, supply and service of medium voltage electrical equipment. The company is the world market leader in Slip Energy Recovery Systems for Slip Ring Motors, with a special presence in the mining industry, supplying SER Drives for SAG mills.

Creating/modifying a mill - SAGMILLING.COM

Entering/changing a mill. Mills are added to projects, and then circuits are created out of combinations of mills. See the section on Creating a project to create a project to add a new mill to.. For the purposes of the model, a crusher is considered a special type of mill. Adding a crusher is the same as adding a mill.

Mining industry | Market-specific Solutions | Siemens Global

Mining-specific 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.

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Gearless Mill Drive Sales Rev Up To Meet Demand

This plan was first started in ball mills we tune, in an actual trial account, this was a start up seasoned . CONGA THE WORLDS FIRST 42 FOOT DIAMETER 28 MW . SAG mill, 40 ft, 42 ft, gearless mill drive, GMD, SAG manufacture, reliability THE PROJECT The Conga Project is located in Peru adjacent to Newmonts existing Yanacocha operations. Read More

Starter of SAG Mills with rotor resistance

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 13.8 kV. thank you for all.

(PDF) Principles of Power Systems V.K Mehta.pdf | M ...

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