Home--->design of motor drives for ball mills

  • Ball Mill Drives Mineral Processing & Metallurgy

    2016-10-22 · When using a synchronous motor we recommend having 200% starting torque, 120% to 130% pull-in torque, and 225% pull-out torque. These assume no greater than a 10% voltage drop at the motor terminals. V-BELT Ball Mill DRIVE. V-belt or poly-V drives are generally used on grinding mills

    Ball mill drive motor choices researchgate.net

    Purpose: To estimate the effectiveness of the coupling with rubber-cord shells for evenly distributed load between the transmission lines in the twin-motor drives of tumbling mills.

    MILL DRIVES FOR CEMENT INDUSTRY TOPICS FOR

    2014-1-2 · A. Ball Mill Drives SINGLE MOTOR DRIVES • Ring gear and pinion with low-speed synchronous motor and air clutch BALL MILL DRIVE • For large mills, greater than 10’000 hp (speed from 13 to 15 1/min) October 29, 2006 8. October 29, 2006 9. October 29, 2006 10.

    TECHNICAL AND COMMERCIAL BENEFITS OF GEARLESS

    2021-2-17 · Comparison of Drives Systems for Grinding Applications The question what drive system is optimal for SAG and ball mills is project specific and depends on the plant layout and the design of the grinding circuit. When drives systems are compared the main criteria are operating characteristics (fixed speed or variable speed,

    Autogenous mills, semi-autogenous mills and ball mills

    2017-7-29 · In 1976 Polysius adopted the design of shell-supported grinding mills using slide shoe bearings. Since this time, the design has been xIdeal for ring motor drives. Polysius grinding mills can ball mills. 4 *Motor power at 35% ball charge. The standard range of.....medium size and big ball mills.

    (PDF) Evaluation of synchronous motors on grinding

    The subject of this paper is a synchronous drive of grinding ball mills 4 MW, 150 rpm, 6 kV, 50 Hz on the base of PWM CSI. The system is installed at the concentrating plant of Norilsknickel in

    Ball Mill Gear Mineral Processing & Metallurgy

    2016-10-22 · Two general classifications of gearing are used for ball Mill drives. These are the spur gear and the helical gear. Helical gearing may be either of the single helical or double helical (Herringbone) design. SPUR GEARS. These are generally furnished on the smaller diameter mills using V-belt drives or reducer drives.

    Industrial gear unit drive solution for ball mills SEW

    Flexible drive solutions for use in ball mills A ball mill is a horizontal cylinder filled with steel balls or the like. This cylinder rotates around its axis and transmits the rotating effect to the balls. The material fed through the mill is crushed by the impact and ground as

    Selecting Inching Drives for Mill and Kiln Applications

    2016-5-21 · cement plant, the kiln. Based on their design, it is critical to keep the kiln in motion at all times when heated. The inching drive for this application is designed to operate whenever main power is lost for the rotation of the kiln. The second cement application for inching drives is the rotation of the horizontal grinding mills for maintenance.

    Rigid Linear Motors Technology Sodick Sodick

    Rigid Linear Motor Axis Drives come standard on Sodick’s EDM equipment and High Speed Mills. Advantages of linear motor drives: Eliminates ball screw drives No backlash or lost motion Ideal part geometry and finish with reduced skim passes Fewer wire breaks Increased cutting speed No maintenance 10-year Positioning Accuracy Guarantee

    TECHNICAL AND COMMERCIAL BENEFITS OF GEARLESS

    2021-2-17 · Comparison of Drives Systems for Grinding Applications The question what drive system is optimal for SAG and ball mills is project specific and depends on the plant layout and the design of the grinding circuit. When drives systems are compared the main criteria are operating characteristics (fixed speed or variable speed,

    siemens/mining SIMINE Gearless Mill Drives

    2021-4-14 · Whether you’re talking about SAG or ball mill, space is a sensitive subject, especially in the concentrator. That’s why we always design our SIMINE MILL Gearless Drives to combine maximum performance with limited space requirements. Suitable foundation and adequate ground conditions Since our solutions have a low motor weight, this notice-

    Rigid Linear Motors Technology Sodick Sodick

    Rigid Linear Motor Axis Drives come standard on Sodick’s EDM equipment and High Speed Mills. Advantages of linear motor drives: Eliminates ball screw drives No backlash or lost motion Ideal part geometry and finish with reduced skim passes Fewer wire breaks Increased cutting speed No maintenance 10-year Positioning Accuracy Guarantee

    Ball Mills Mineral Processing & Metallurgy

    2021-5-11 · These ball mills are relatively small, bearing mounted on a steel frame. All ball mills are sold with motor, gears, steel liners and optional grinding media charge/load. Ball Mills or Rod Mills in a complete range of sizes up to 10′ diameter x 20′ long, offer features of operation and convertibility to meet your exact needs. They may be

    Current issues on high-power cycloconverter fed

    2003-6-11 · Looking at economy of scale, new projects consider the use of big mill grinding circuits, where larger power gearless motor drives with cycloconverters in the range around 20 MW are being applied for semiautogenous (SAG) mills and recently, ball mills are also being considered.

    Gearless Mill Drive Protection Improvements and Its

    2021-2-15 · industry. Since then, numerous GMDs for ball mills and SAG mills have been installed in the minerals industry. A GMD with a high power of up to 20 MW and more, as a result of today’s requirements for ball and SAG mills for the minerals industry, has of course a certain complexity. It should not anymore be regarded as a simple single drive

    Gearless Mill Drives Beneficiation Siemens Global

    2021-5-7 · The SIMINE Gearless mill drives pump system significantly enhances concentrator productivity by eliminating the reducer gear between motor and pump and all corresponding maintenance. In addition, the cyclone pumps with variable speed can adjust their energy consumption to the optimized flow of pulp, resulting in energy savings of up to 30%.

    Motors and drives perform critical service throughout

    2020-4-8 · Toshiba’s product lines for mining-industry use include its general purpose EQP Global motor series, which is available in sizes from 0.75 hp to 500 hp. Designed for heavier work in sizes from 1 hp to 600 hp, the company’s Quarry Duty motor has a totally enclosed fan-cooled design and provides high starting torque, with oversized superior

    Teco-Westinghouse Custom Synchronous Motors

    Synchronous machines can be found wherever there is a demand for highly efficient, cost-effective, dependable machines. They are frequently used for rolling, ball and sag mills, chippers, mixers, pulp refiners, pumps, fans, and compressor (reprocating and centrifical) drives.

    Cement Mill Drives Transmission (Mechanics) Engines

    2021-2-18 · Cement Mill Drives Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online. Application of Electrical drives in Cement industry Includes function and requirements of: #Crusher Drives #Compressor Drives #Waste Gas Fan Drives #Rotary Kiln Drives #Cement Mill Drives

    ABB Ring-Geared Mill Drives

    2014-7-17 · from design to service and equipment support. An ABB Solution ABB ring-geared mill drive solu-tions offer a modular concept that pro-vides a common drive control platform for induction and synchronous motors in single- and dual-pinion configurations. These drives are well-suited for all type of mills and ball mill ap-

    Brazil's WEG installs SAG and ball mill slip ring motors

    2021-3-7 · The motors are being applied in pairs to SAG and ball mills that operate through dual pinion drives supplying power to each mill. Historically, WEG says the customer was facing problems for a number of different reasons such as mechanical fits, overheating of antifriction bearings and

    THE ENGINEERING AND PROCESS EFFECTS OF

    design, usually resulting in a lower motor cost. The paper specifically describes SAG mills, but the equations and principles apply equally to any conventional tumbling mill, such as AG, ball or rod mills. MOTOR ELECTRO-MECHANICAL CHARACTERISTICS The cost of a motor of a Gearless Mill Drive depends mainly on two parameters:

    SYNCHRONOUS MOTOR DESIGN AND ANALYSING THE

    2015-3-2 · is required (as in ball mills and similar apparatus). 1.1.1 Basic construction and operating principle Three phase AC synchronous motor are commonly used in industrial applications. This type of motor has three main parts, rotor, stator, and enclosure. The stator and rotor do the work and the enclosure protects the stator and rotor.

    Gear unit that perfectly fits your ball mill FLSmidth

    Our three-stage lateral gear unit drives your ball mill directly with two output pinions and reduces the motor speed to precisely the required speed. The torque split design of the MAAG® GEAR LGDX Gear Unit guarantees an equal load distribution between the two output pinions, which automatically self-align.

    Motors and drives perform critical service throughout

    2020-4-8 · Toshiba’s product lines for mining-industry use include its general purpose EQP Global motor series, which is available in sizes from 0.75 hp to 500 hp. Designed for heavier work in sizes from 1 hp to 600 hp, the company’s Quarry Duty motor has a totally enclosed fan-cooled design and provides high starting torque, with oversized superior

    Selection Of Rod Mills, Ball Mills, Pebble Mills And

    B. Drives Economics at the time of plant design and mill purchase determine the drive to be used. The simplest drive is the low speed synchronous motor with speeds in the range of 150 to 250 RPM connected to the mill pinion-shaft by either an air clutch or flexible coupling.

    Pinion Shaft an overview ScienceDirect Topics

    The gearless drive design was not applied to the mills in the mineral industry until 1981 when the then-world’s largest ball mill, 6.5 m diameter and 9.65 m long driven by a 8.1 MW motor, was installed at Sydvaranger in Norway (Meintrup and Kleiner, 1982).

    Cement Mill Drives Transmission (Mechanics) Engines

    2021-2-18 · Cement Mill Drives Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online. Application of Electrical drives in Cement industry Includes function and requirements of: #Crusher Drives #Compressor Drives #Waste Gas Fan Drives #Rotary Kiln Drives #Cement Mill Drives

    Medium Voltage Drives SINAMICS Electric Drives

    Low voltage (LV) variable frequency drives (VFDs) have been applied to applications up to 2500 horsepower (HP). Medium voltage (MV) VFDs have been applied to applications as low as 150 HP. Traditional power system design practice suggests that motor crossover from low voltage to medium voltage is in the 200-600HP range.

    ABB Ring-Geared Mill Drives

    2014-7-17 · from design to service and equipment support. An ABB Solution ABB ring-geared mill drive solu-tions offer a modular concept that pro-vides a common drive control platform for induction and synchronous motors in single- and dual-pinion configurations. These drives are well-suited for all type of mills and ball mill ap-

    THE ENGINEERING AND PROCESS EFFECTS OF

    design, usually resulting in a lower motor cost. The paper specifically describes SAG mills, but the equations and principles apply equally to any conventional tumbling mill, such as AG, ball or rod mills. MOTOR ELECTRO-MECHANICAL CHARACTERISTICS The cost of a motor of a Gearless Mill Drive depends mainly on two parameters:

    Gear unit that perfectly fits your ball mill FLSmidth

    Our three-stage lateral gear unit drives your ball mill directly with two output pinions and reduces the motor speed to precisely the required speed. The torque split design of the MAAG® GEAR LGDX Gear Unit guarantees an equal load distribution between the two output pinions, which automatically self-align.

    Motors and drives perform critical service throughout

    2020-4-8 · Toshiba’s product lines for mining-industry use include its general purpose EQP Global motor series, which is available in sizes from 0.75 hp to 500 hp. Designed for heavier work in sizes from 1 hp to 600 hp, the company’s Quarry Duty motor has a totally enclosed fan-cooled design and provides high starting torque, with oversized superior

    SYNCHRONOUS MOTOR DESIGN AND ANALYSING THE

    2015-3-2 · is required (as in ball mills and similar apparatus). 1.1.1 Basic construction and operating principle Three phase AC synchronous motor are commonly used in industrial applications. This type of motor has three main parts, rotor, stator, and enclosure. The stator and rotor do the work and the enclosure protects the stator and rotor.

    gearless mill drives Archives International Mining

    2021-4-6 · The $1.2 billion expansion, which saw throughput rise from 60,000 t/d to 120,000 t/d, involved the addition of two new thyssenkrupp-made ball mills, with ABB providing the gearless mill drives (GMD) technology. This came on top of the 33 mills the miner already had up and running as part of the existing 60,000 t/d plant at the operation.

    Industrial Motors TMEIC

    2017-4-9 · induction motors for the operation of steel rolling mills. The power levels for these motors go up to about 10 MW. They are covered in a separate brochure. TMEIC produces high-quality motors by employing the best design, manufacturing, and test procedures. Advanced computer aided design and analysis allows motor performance to be predicted in

    Project and Motor Support Toshiba International

    Project and Motor Support At Toshiba, we pride ourselves on supporting our customers from design concept, tendering through to commissioning. Toshiba's world wide applications include rolling mill drives, roller drives, coilers, crushers, grinding mills (sag/ball), conveyor refiners, centrifuges, pumps, fans, compressors, reciprocating machines

    Medium Voltage Drives SINAMICS Electric Drives

    Low voltage (LV) variable frequency drives (VFDs) have been applied to applications up to 2500 horsepower (HP). Medium voltage (MV) VFDs have been applied to applications as low as 150 HP. Traditional power system design practice suggests that motor crossover from low voltage to medium voltage is in the 200-600HP range.

    What is an inching drive? Motion Control Tips

    2018-5-2 · An inching drive is used as an auxiliary system to the main drive for a large machine such as a ball mill, industrial kiln, conveyor, or elevator. Its purpose is to turn the equipment at a speed slower than the normal operating speed — typically 1 to 2 rpm, although fractional rpms are also common — and to do so at high torque — typically

  •