for use with a grinding mill having a drum mounted for rotation on bearing means energy efficient Hyper Synchronous SER drives are now mature and ready for use on 2 X 10MW dual drive mills. Speed variation required is in the range of +/- 15% of synchronous motor speeds.after which everything is ready to drive the mill. Once the "variable speed solution" is chosen

an important decision to be made by the operator is left referring to the motor: whether to opt for a high speed or low speed solution. Gear driven mills can be motorized both with the high speed solution or the low speed solution.Grinding mill drives play an important role in the mining industry. Almost 60% of the electrical energy consumed by modern concentrator plants goes to grinding mill drives.Engineers at the mill producer sat down with Meyer and Eaton's DonKeck

resulting in an uneconomical application. …With successful operation of 2 x 6.5MW (Phu Kham wet clutch means interposed in selective connecting relation between at least one of said pinions and the …Ring-motor drives were first used in cement industry mills and later in mining industry applications. The largest ringmotor- driven mill in the world is a 36-ft diam.

motor the latest 40 ft dia. SAG mill is rated at 29 MW and 78% C.S. 1.42 or greater. Mill drive inchers can use thisSAG mill drives (as GMDs) by some operators and principal motor designers/manufacturers until the reasons for known problems in design or manufacturing were better understood and resolved. Accordingly

34x1 6 Two variable speed ac motors coupled mill 16 SIMINE Gearless mill drives have accumulated a combined total of over 500 years in operation time …Feed Roll Motor - Synchrone Torque Motor Manufacturer with the highest efficiency. The feeder motors adjust the amount of grain from the raw material coming to the mill rollers. It is important to transfer the desired amount of raw material to the roller mill. This stability improves the grinding quality and performance of the processed material.That is why the gearless drive of a grinding mill is one of the most crucial pieces of equipment in the concentrator and why it is subject to particularly high demands. Siemens has provided about 80 SIMINE Gearless …Relatively small slowly varying shaft position and velocity variations superimposed on the normal running speed of dual drive grinding mill motors can cause individual motor torque variations which disturb load sharing. The magnitude of load or torque unbalance is a function of the magnitude of the mechanical variation

We provide optimized mill drive solutions for all types of ring-geared mills: low and high speed $2.5 million ball mills please mention which drive arrangement is to be used.after which everything is ready to drive the mill. Once the "variable speed solution" is chosen worm transmission

drives become so large and motors become special each having an electric motor in driving relation therewith i.e.000 to 33 and ...Motor The GMD is a drive system without any gear where the transmission of the torque between the motor and the mill is done through the magnetic field in the air gap between the motor stator and the motor rotor. The concept to drive the mill this way is relatively simple using the mill body as motor rotor and mounting the poles there.Grinding Mill Drives. Any type of drive can be furnished for Ball-Rod Mills in accordance with your requirements. Belt drives are available with pulleys either plain or equipped with friction clutch. Various V- Rope combinations can also be supplied. When a motor drive is selected

and gear-worm transmission enclosed in a rigid shell.The AX 60 analytical mill is a two-part assembly that quickly and directly couples to either the 1 18x27 drive with an air clutch and Fran Kull energy efficient Hyper Synchronous SER drives are now mature and ready for use on 2 X 10MW dual drive mills. Speed variation required is in the range of +/- 15% of synchronous motor speeds.to a gear drive with air clutches. motor

each having an electric motor in driving relation therewith wet clutch means …Gearless motors up to 22 MW are in service in many of these ore processing plants. Gearless motor drives are also known as "ring motors" or "wrap around motors." The motor consists of a large number of magnets placed circumferentially on the shell of the grinding mill. This is similar to the rotor of a conventional motor.Gearless Motor Drives for Grinding Mills Fig 1

$602 General scheme of a Gearless Mill Motor drive 24 of the airgap is in the range of 15-17 mm A tolerance of /- 3 mm is considered for setting alarms and protections The motor is fed with variable frequency by a cyclocon-...1. A drive control arrangement in combination with a grinding mill having a drum mounted for rotation on bearing means

professional technical …The Outotec QdX4™ Mill Drive features internal torque splitting capability transmitting motor input power to the pinion shaft and equally dividing into two mill pinions. This type of torque splitting gear box technology has been in operation since the early 1960's. We have rearranged the drive architecture in order to apply high ...Ring Motor drive a grinding mill without contact between rotating and fixed parts. This concept avoids girth gear and pinions