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gmd sag mill slip energy recovery

  • THE COMMINUTION CIRCUIT DESIGN FOR THE CONSTANCIA

    mill work index 11.4 kWh/t and an average RQD of 44%. RQD values of 25% resulted in a SAG mill feed size (F80) between 55 and 60 mm and throughputs of 6200 t/h. RQD values of 55% resulted in SAG mill feed size (F80) of over 70 mm and a SAG mill throughput of 5200 t/h. The Batu Hijau SAG mill specific energy was a function of point load test andsiemens/mining Flexible Slip Energy Recovery Drive,The flexible Slip Energy Recovery Drive (SER) enhances the tradi-tional subsynchronous SER by increasing the speed range and • SAG mills and ball mills in the mining industry, where an increase of efficiency and productivity is desired while availability is maintained

  • Mining Grinding and Processing WEG

    Variable Speed . Single or double pinion driving systems. Designed to drive and control the speed of the medium voltage motors coupled to the SAG/AG, ball and HPGR mills with single or double pinion, the MVW01 frequency drive uses state of the art technology through a multilevel structure with medium voltage IGBTs, reducing the harmonic currents on the motor to extremely low levels.SER DRIVE,The Slip Energy Recovery Drive (SER 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).They are also the dominant technology in wind turbines.

  • Slip Energy Recovery of an Induction Motor Circuit Globe

    Apr 18, 2018· 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 Drive.In the rotor resistance control method, the slip power in the rotor circuit is wasted as I 2 R losses during the low-speed operation. The efficiency is also reduced.TECHNICAL AND COMMERCIAL BENEFITS OF GEARLESS MILL ,SAG mills have a power higher than 10 MW. Even ball mills have a power larger than 10 MW. For this reason, they have an important impact in energy consumption and in the operation of the power distribution system. Figure 1. Picture of a typical GMD system for a SAG mill Figure 2 presents the power circuit of a cycloconverter fed synchronous motor.

  • MOTOR TECHNOLOGY Saving energy TMEIC

    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)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, could not live anymore without it for SAG mills.

  • 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 doesGearless 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 and availability for your processing plant.

  • Didipio SDG

    This gold mine installed Mill Safe Start Systems on both their Ball and Sag mills. The Sag mill switches over to a Slip Energy Recovery Drive after start-up.Slip Energy Recovery Drives (SER) Australia CSE Uniserve,Description. 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 100% speed. It exclusively offers operators full torque at hyper synchronous speeds. Typical applications include mills, crushers, fans and pumps.

  • OCEANAGOLD COMMENCES MILLING AT DIDIPIO

    • 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 • All Motor Control Centres (MCC) have china mining equipment line mines in andrapradesh ME,teori mengenai hammer mill; milling machine japan; gmd sag mill slip energy recovery; magnetic ore sepration; sayaji crusher engineering; humboldt mobile crusher for aggregates for lab; manufacturer of roadheader; millu watches for sale; investors yahoo com hotmail com gmail com 2013; types of slate stone slate stone types kinds of slate stone

  • How the Modern SER Drive boosts grinding CSE Uniserve

    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 noSTYLE GUIDELINES TO ASSIST AUTHORS PREPARING PAPERS ,The mill installation. The SAG mill has a diameter of 6,1 m and a length of 7,770 m. As is standard practice in South Africa for large grinding mills, drive power is provided by two slip ring induction machines, each wound for 11 000 Volts, 6 pole.

  • Recent Process Developments at the Phu Kham Copper-Gold

    SAG mill grinding media is added to the ore feed conveyor via a spillage return hopper. Primary grinding is achieved in a dual pinion 13 MW variable speed slip energy recovery/ hyper-synchronous drive 34 ft × 20 ft SAG mill in closed circuit with scats return conveying including a high-lift conveyor to overcome topography constraints. SAG millStarter of SAG Mills with rotor resistance,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 13.8 kV. thank you for all.

  • Electrodrives- ElectroDrives SL Ser. Drive Specialist

    ElectroDrives is manufacturer of solutions for industrial applications of controls and power electronics in medium voltage (1kV-35kV). We are experts in Slip Energy Recovery Drives (SER Drives), Liquid Resistor Starters (LRS), Induction Motors, Reactive Power Compensation, Static Excitation Systems and Harmonics filters.Find out the solutions we provide to our customers for their SAG mills, AGautomation of mill ore,The SAG Mill is a machine added by Ender IO uses Micro Infinity (µI) to grind (or mill) items into their crushed variants like Ores into Dusts.The SAG Mill has four output slots recipes can have 1-4 different outputs with different chances of obtaining those outputs.

  • 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)Benchmarking: Morrell Mih Tropicana SAGMILLING.COM,ball mill using WRIM with Slip Energy Recovery and gearbox, assume 0.95 × 0.97 efficiency = 0.9215 conversion DCS power to shell. Plant DCS data Jan 2014 to Mar 2015: secondary crusher specific energy consumption 0.4 kWh/t assume product size 35 mm; power draw back-calculates to 763 t/h × 0.4 = 305 kW (45% of available power)

  • Ring-geared mill drives Grinding ABB

    Mill application features. Frozen charge protection Detects frozen charge in the mill, minimizing equipment wear and liner replacements.; Coupling supervision Detects if a failure or slippage occurs in the couplings and stops the system in case, preventing major damages.; Stand-still detection Prevents the motors from re-starting if the mill is still rocking or moving after a stopGrinding Mill an overview ScienceDirect Topics,The first step in slag processing is size reduction to liberate metallic iron and iron-bearing minerals. This is done by crushers or by autogenous grinding, that is, the slag is ground on its own in the grinding mill without any balls. The latter process yields higher quality product as the iron product discharged from grinding mill contains as high as 80% Fe (Shen and Forssberg, 2003).

  • china mining equipment line mines in andrapradesh ME

    teori mengenai hammer mill; milling machine japan; gmd sag mill slip energy recovery; magnetic ore sepration; sayaji crusher engineering; humboldt mobile crusher for aggregates for lab; manufacturer of roadheader; millu watches for sale; investors yahoo com hotmail com gmail com 2013; types of slate stone slate stone types kinds of slate stoneRecent Process Developments at the Phu Kham Copper-Gold,SAG mill grinding media is added to the ore feed conveyor via a spillage return hopper. Primary grinding is achieved in a dual pinion 13 MW variable speed slip energy recovery/ hyper-synchronous drive 34 ft × 20 ft SAG mill in closed circuit with scats return conveying including a high-lift conveyor to overcome topography constraints. SAG mill

  • Grinding Mill an overview ScienceDirect Topics

    The first step in slag processing is size reduction to liberate metallic iron and iron-bearing minerals. This is done by crushers or by autogenous grinding, that is, the slag is ground on its own in the grinding mill without any balls. The latter process yields higher quality product as the iron product discharged from grinding mill contains as high as 80% Fe (Shen and Forssberg, Benchmarking: Morrell Mih Tropicana SAGMILLING.COM,ball mill using WRIM with Slip Energy Recovery and gearbox, assume 0.95 × 0.97 efficiency = 0.9215 conversion DCS power to shell. Plant DCS data Jan 2014 to Mar 2015: secondary crusher specific energy consumption 0.4 kWh/t assume product size 35 mm; power draw back-calculates to 763 t/h × 0.4 = 305 kW (45% of available power)

  • liquid starter for grinding mill motor Popular Education

    Flexible Slip Energy Recovery Drive Siemens. For example, the mill speed can be increased to reach the best grinding results Additionally, the system of slip-ring motors (WRIM) and SAG mills and ball mills in the mining industry, whereliquid starter for grinding mill motor,SAG mill, Ball mill, Locked charge, drop charge, frozen charge, Liquid the electrical currents between the motor rotor and the liquid resistance starter. . Under these crash stop conditions, the mill stops without prior controlled grind out of. Flexible Slip Energy Recovery Drive Siemens. speed can be increased to reach the best

  • Motors Automation Energy Transmission & Distribution

    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 SpeedElectrodrives- ElectroDrives SL Ser. Drive Specialist,ElectroDrives is manufacturer of solutions for industrial applications of controls and power electronics in medium voltage (1kV-35kV). We are experts in Slip Energy Recovery Drives (SER Drives), Liquid Resistor Starters (LRS), Induction Motors, Reactive Power Compensation, Static Excitation Systems and Harmonics filters.Find out the solutions we provide to our customers for their SAG mills

  • automation of mill ore

    The SAG Mill is a machine added by Ender IO uses Micro Infinity (µI) to grind (or mill) items into their crushed variants like Ores into Dusts.The SAG Mill has four output slots recipes can have 1-4 different outputs with different chances of obtaining those outputs.Ring-geared mill drives Grinding ABB,Mill application features. Frozen charge protection Detects frozen charge in the mill, minimizing equipment wear and liner replacements.; Coupling supervision Detects if a failure or slippage occurs in the couplings and stops the system in case, preventing major damages.; Stand-still detection Prevents the motors from re-starting if the mill is still rocking or moving after a stop

  • Energy Consumption in Mining Comminution ScienceDirect

    Jan 01, 2016· One of the largest SAG mills (12m diameter), has a variable speed GMD (gearless mill drive, made by ABB) drive and has a capability of 28 MW for refining copper-molybdenum- silver [13]. Mills usually have motors in the following range: SAG mill motor: 7,435 kW or an HPGR circuit with motors: Ball mill 1 (4,015 kW) and Ball mill 2 (4,152 kW) formini jaw crusher business for sale,jaw crusher Gumtree Australia Free Local Classifieds. Crush produce crushed product between 5-80mm For enquires and availability please call Mini jaw crusher for hire, OUTPUT POTENTIAL UP TO 30TPH 34 US TPH POWERUNIT 21,5KW 28,5 DIESEL ENGINE JAW CRUSHER 480X250MM (19X10’) CSS RANGE 20MM TO 80MM (3/4” TO 3-1/4”) WEIGHT 3,400KGS

  • Fruitful to Design and Supply the World’s Largest SAG Mill in

    Oct 05, 2010· Fruitful has been selected to design and supply a 42ft x 25ft, (12.8m x 7.6m) 28MW gearless SAG mill, plus two 26ft x 42ft, (7.9m x 12.8m) 15.6MW ball mills and two VTM-1500-WB VERTIMILLS® for Newmont Mining’s Yanacocha Conga copper-gold project in Peru. The 42ft diameter SAG mill is the world’s largest and the first of its kind.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,

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