First works analyzing grinding mill drives [1], [2] focused on the torque requirements, motor options (wound rotor induction motors, synchronous motors), and drive arrangements (center drive, one ...
I first got introduced to O-Drive by James Bruton on his OpenDog project. I'm using Alibre Design for CAD and Fusion 360 for CAM (G-Code generation). The Arduino Mega directly controls the ODrive Brushless DC motor controller and temporarily uses a joypad (from an old indoor helicopter) to manually control the mill.
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 …
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AC adjustable speed motor drive systems are the preferred technology for new rolling mill installations and modernization projects. TMEIC designs and manufactures two types of AC solutions for this purpose. Salient pole synchronous motors that meet the high power and torque demands of a hot strip mill, as well as roughing and finishing stands.
04-07-2020· 7. Slip Ring Induction Motor. It has high starting torque and large overload capacity. The speed of slip ring induction motor can be changed up to 50% of its normal speed. Slip ring induction motor is used for those industrial drives which require high starting torque and speed control such as lifts, pumps, winding machines, printing presses, line shafts, elevators and compressors etc.
TMEIC2 installed its first AC adjustable-speed motor drive system for a rolling mill main stand in 1980; by January 2004 TMEIC had installed AC adjustable-speed motor drive systems on more than 700 main mill stands, coilers and reels, constituting more than 2,400 MW of installed main drive power. 2. TMEIC: includes equipment supplied by Toshiba
The poles of the gearless or synchronous motor (also called wrap-around motor or ring motor) are directly installed on the pole flange of the mill shell, turning the mill body into the rotor. The stator is then wrapped around the mill. The gearless motor is fed by a cycloconverter which has a rated output frequency of around 5 Hz for the GMD drive.
22-10-2016· 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 consuming 350 HP or less.
22-10-2016· Motor speeds will vary from 225 rpm to 450 rpm. The motor and pinion shafts are connected together through a flexible coupling. This drive is the most compact, resulting in minimum floor space. In cases where motors must be placed away from the mill a pilot shaft extension with flexible couplings can be provided.
Antamina Compania Minera Antamina S.A. Peru Project: One SAG Mill and 3 Ball Mill Drive Systems Capacity: SAG Mill 1000 t/h Ball Mills 1000 t/h Consultant: Bechtel, USA Mill Builder: FFE Minerals, USA Mill Size: SAG Mill 38 feet/11,58 m Ball Mills 24 feet/7,32 m Ore processed: Copper/Zinc Drive Rating: SAG Mill 20,1 MW, 9,23 rpm Ball Mills 11,2 MW, 11,38 rpm
Electric Motors IC Engines 1.00 on mills 1.25 Mils 1.25 on kilns 1.50 on kilns with 0.5 de-rate on IC power Table 5 Reducer service factors In general use, few applications of gear drives in industrial applications are selected on the basis of 1.0 service factors. Normally service factors are 1.25, 1.42 or greater. Mill drive inchers can use this
Steel Mill Drive Motor » K&N Electric. Locations. Contact Us. Employment Opportunities. Western Montana. Moses Lake Location. Services. Apparatus Repair. Machine Shop.
Motors for rolling mills and other industrial applications. Up to 25 MW, 13.8 kV. German manufacturer since 1927. Reference projects worldwide. Read more!
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 proven computer models help to look beyond experience, where testing is impossible.
20-01-2021· 17. The most suitable motor for a steel mill requiring a motor having high starting torque, wide spread range and precise speed control is_____. a. DC shunt motor. b. DC series motor. c. Wound rotor induction motor. d. Plain squirrel cage induction motors. 18. For automatic drives the preferences is for_____. a. Synchronous motors. b.