On site we have a Sag Mill Driven by a 5500KW Motor. We have a vibration issue right across the Mill. The highest vibration is 30mm/sec RMS axial on the motor non drive end bearing.(White metal Bearing) The gear mesh frequency is 4200 CPM. The dominant frequency is 2400 CPM.
A SAG mill with a 44' (13.4m . SAG mills are primarily used at gold, . Get Price And Support Online; sag mill ring gear failure iqsa. SAG mill pinion gear alignment: . motor power to the. slip ring induction motor for sag mills. and induction motor for the SAG mill, and Liquid Rheostat Starter (LRS) and slip ring motor for the ball mill.
1000 hp,synchronous motor. i have a synchronous motor coupled to a ball mill by clutch it starts uncoupled and after it synchronizes the clutch engages the load nameplate and other data and parameters are 1000hp, pf 10, 4160v, 60hz, 180 rpm, 60c rise stator, 70c rise ro.
dual motor grinding mill drive synchronous motor- dual motor grinding mill drive synchronous motor,Typically, the synchronous motors used in SAG mills have a power higher than 10 MW Geared vs gearless drive solutions for grinding mills Dual motor gear driveSDMK Series Mining Grinding Machine with Three Synchronous MotorMotor and .
8ft x 14ft Allis Chalmers Ball Mill for sale Mining, Mineral Processing & Power Plant Equipment for Sale since 1999 : We offer the most reliable choice for all kinds of Ball Mills, Rod Mills, Pebble Mills, SAG Mills, Mine Hoists, Crushers, Synchronous Motors, DC Motors, Flotation, Mixers, Pumps, Diesel Generators, Natural Gas Generators and all ...
The power to spin the mill comes from large electric motors coupled to mill shell through a clutch and gear system. These electricity consumed by these motors is the largest cost and inefficiency. ... The mill is driven by two GE horizontal synchronous variable speed motors, ... The SAG mill and all other grinding equipment is remotely ...
8ft x 14ft Allis Chalmers Ball Mill for sale Mining, Mineral Processing & Power Plant Equipment for Sale since 1999 : We offer the most reliable choice for all kinds of Ball Mills, Rod Mills, Pebble Mills, SAG Mills, Mine Hoists, Crushers, Synchronous Motors, DC Motors, Flotation, Mixers, Pumps, Diesel Generators, Natural Gas Generators and all ...
Dec 19, 2014· So at say 85% speed, 15% of the motor rated power is returned from the rotor to the supply. At a hyper-synchronous speed, the SER drive feeds power into the motor rotor allowing it to run faster than synchronous speed. So for a fixed torque and higher speed, the power obtained from the motor is higher than the motor nameplate rating.
Sag Mill Wrap Around Motor Grinding Mill China. Duel Drive Motor In A Ball Mill. The products are part of an important order for electric motor drives for eighteen ball mills and semi-autogenous grinding (sag) mills with dual and single. get price and support online; autogenous mills, semi-autogenous mills and ball . ball mill with combiflex® drive for lead zinc . by using a dual drive system ...
Application: Ball Mill Equipment: 1 x 44000kW 30 pole 6600 volt Synchronous Motor Location: Kalgoorlie, Western Australia Ernest Henry Mine Application: 1 x 11000kW SAG Mill driven by Dual 5500kW motors, 1 x 5500kW Ball Mill Equipment: 3 x 5500kW 6 pole 11000 volt Wound Rotor Induction Motors Location: Cloncurry, Queensland
SAG mill trommel Mill braking system Hydraulic jacking system Portable hydraulic power unit. Motor and Drive 26,000 HP 19.4 MW Siemens wrap-around drive motor 60 Hz synchronous Gearless, wrap around Differential protection. Get Price. gearless mill drive sales rev up to meet demand.
A SAG mill is usually a primary or first stage grinder. SAG mills use a ball charge of 8 to 21%. The largest SAG mill is 42'' (12.8m) in diameter, powered by a 28 MW (38,000 HP) motor. A SAG mill with a 44'' (13.4m) diameter and a power of 35 MW (47,000 HP) has been designed. Attrition between grinding balls and ore particles causes grinding of
Mill motor, 2.9MW, 6.3KV, rotor current: 775A, rotor voltage: 2770V Torque delivered would be around 1.6 x Full load torque, very typical for a ball mill or sag mill. By the way, the equivalent of DOL with a slip ring motor is electrodes shorted drives depends entirely on …
Voltage waveform at the rectifier input side of an 18 000-hp LCI SAG mill drive. (a) Line-to-line bus voltage waveform (11 270-V peak). ... synchronous motor must operate in the capaciti ve mode ...
1 x SAG Mill & Siemens Motor For Sale/Re-Assignment Mill Details Type of Mill SAG Mill Mill Dimensions 11,582 mm x 7,759 mm (38' x 26') (D x L) Default Mill Speed 7.5-8.0 RPM Mill Speed 7.56-10.08 RPM Liners Excluded Mill Drive Motor Type Wrap Around (included) Mill Drive Motor Size 19,400 KW (26,016 hp) Variable Speed Drive Yes Max.
Inventory ID: 17C-102. GENERAL ELECTRIC 11,500 HP, (8200 kW) 180 RPM Synchronous Motor
One only used AC Ball Mill with 2,000 HP synchronous motor & Rubber Liners. Get Price. Autogenous and Semiautogenous mills . AG/SAG mill drives. Mill motor gear drives can be offered for AG/SAG grinding mill as dual pinion drives with power deliver of up to 20 MW 2 x 10,000 kW, and this can be accomplished on mill sizes up to 36 ft in diameter.
SAG mills can operate at a fixed speed or adjustable speed through the use of ac synchronous motors or dc motors. ... this mill uses a ring-motor drive, Figure 5. The SAG mill is followed by two ...
SAG Mill Components. Previous Next ... allowing the use of a synchronous motor and air clutch for low inrush applications. This provides the advantages of power factor correction through the synchronous motor. If an "across the line" start is allowable, the air- clutch can be eliminated and a high torque synchronous motor used, either of ...
Typically, the synchronous motors used in 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 ...
Figure 1 SAG Mill and synchronous motor. The complexity and in itial cost of a low speed sy nchronous motor and VFD is offset by the simplicity in .
Inventory ID: 6C-HB02. UNUSED 22' x 10.25' (6.7m x 3m) SAG Mill with 3,300 HP (2463 kW) ABB LSS Synchronous Motor with ACS 6,000 VFD & Liners & Liner Handler
SAG Mill: GM130: 24 Ft dia x 12ft SAG Mill, Allis Chalmers, with a 3,500hp Synchronous Motor, 4,000volts, Philadelphia Gear Box 720 RPM in and 84.2 RPM out, ratio 8.546:1 : 1: SAG Mill: GM135: 32 Ft dia x 16.5ft SAG Mill, Hardinge, with a 8,500hp Motor : NEED SOME BALL MILLS?, SEND YOUR REQUEST AND WE WILL FIND IT FOR YOU [email protected]
SAG Mill (Semi-autogenous Grinding) Quantity : 1 unit Composed of a twelve-pulse cycloconverter together with a synchronous ringmotor Power : 26.000 HP Voltage : 4950 V Current : 2485 A Base Speed : 9.31 rpm Maximum Speed : 10.0 rpm Base Frequency : 5.586 Hz Maximum Frequency : 6.0 Hz The grinding mill is the rotor of the synchronous motor.
4.3 Synchronous Motor Salient pole synchronous motors pose another unique set of characteristics. These motors get their rotor excitation from a separate source and can, therefore, operate at synchronous speed. The typical synchronous motor has a speed torque curve shown in Figure 4.