Sag Mill Synchronous Motors. large synchronous motor. The poles of ... stage mill (no ball mill after the SAG mill) and has a diameter and length of 32', driven by a 16.5 MW GMD from ABB. TECO-Westinghouse Motor Company synchronous motors and generators provide superior value in terms of ... ball and sag mills, chippers, mixers, pulp refiners ...
It is situated near the Newmont Yanacocha gold mine, where installed what was then the world's largest single-stage SAG mill, a 32 x 32-ft (9.75 x 9.75-m) EGL mill, driven by a 16.5-MW ABB gearless motor, in 2008. That mill design was also the first of its kind and was customized for Newmont.
installed power to maximise net present value. The use of a dual SAG mill arrangement in a cost effective layout added substantial value to the project by increasing both initial and post Year 6 plant throughput for a modest increase in project capital cost when compared with the DFS case of a single 21.5 MW Gearless Motor Drive (GMD) SAG mill.
mill, it needs to have a bore larger than the mill outside diameter. The mill out-side diameter is a function of the grind-ing process selected. Autogenous mills are the largest in diameter since the feed grinds itself. A semi-autogenous mill uses some metallic or ceramic balls to assist the grinding process and can be slightly smaller.
dual pinion sag mill vs single pinion sag mill - (mill ... A Updates on geared vs gearless drive solutions go "metric" ??? 4. 12.8 m Dia x 7.62 m Long (6.86 m EGL) …
Bone Mill. Our Bone Mill streamlines the preparation of harvested autologous bone by saving time and reducing manual effort. Winner of the 2011 Medical Design Excellence Award, Bone Mill efficiently and consistently reduces bone into appropriately sized particles with a low-heat, single-pass cutting action.
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 ... SAG mill conference, provided details of the then largest gear drive in ... interface between the mill vendor and the gearless motor supplier.
Inventory ID: 6C-HM03. UNUSED FL 36' x 24' Dual Pinion SAG Mill with 2 ABB 9,000 kW (12,069 HP) Motors for Total Power of 18,000 kW (24,138 HP)
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]
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.
The "Critical Speed" for a grinding mill is defined as the rotational speed where centrifugal forces equal gravitational forces at the mill shell's inside surface. This is the rotational speed where balls will not fall away from the mill's shell. Result #1: This mill would need to spin at RPM to be at critical speed. Result #2: This mill's ...
The gearbox between motor amp ball mill had been recently rebuilt Photo Of Ball Mill Ball Mill Pinion Tooth Count 18 the 1A Ball Mill Drive under no load . sag mill dual pinion geared drive. DUAL PINION MILL DRIVES The SAG and the two ball mills are gear driven and Copper Mountain selected the sophisticated low speed dual pinion mill drives ...
Gearless mill drive system (GMD) Go gearless to meet your business objetives by exceeding standard availability targets in your grinding operations. 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 ...
FIVE MODELS OF MILL LINER HANDLERS The MLH 123 at 2,000-lb. capacity is used in large diameter rod and ball mills with trunnion diameters greater than 36 inches. The 2,000-lb. capacity MLH 240 is designed to reline both large ball and small semi-autogenous (SAG) mills with the same machine.
SAG 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, the latest 40 ft dia. SAG mill is rated at 29 MW and 78% C.S., with a 42 ft dia. mill built but not yet operational. The more recent option
Gearless mill drive (GMD) technology has further expanded the use of large SAG milling allowing Outotec to produce the world's largest SAG mill of 42' in diameter drawing power at 28 MW. Today, Outotec is the world leading supplier of gearless SAG mills operating globally. Premier™ horizontal grinding mills - Engineered to excel.
mill gear in normal running mode P mill_motor is the actual power of the main drive motor or 2 x main drive motor for dual pinion drives. The power computed above is considered P inch = N o_inch · P mill_motor N o_mill
Advantages of SER drives for SAG mills GoHz. Dec 19 2014 · Advantages of SER drives for SAG mills For large mills requiring variable speed the wound rotor motor and SER drive are economical for a total rating of approximately 2MW to 16MW Above 16MW the gearless drive cyclo converter is typically used because gearboxes and pinion gears reach their present limit in size Around 2MW and below
5 to 50 TPH SAG Mill. Starting as small as 13 feet (4 m) in diameter on 330 HP and as large as 24′ (14.5 m) in diameter on 3,300 HP, the 911MPE Semi & Fully Autogenous Mills tumble crushed ore without iron or steel grinding media. They are used when the crushed ore …
installation twin pinion sag mill - Zenith Rock Crusher For Sale. increased installed power of 5.8MW, the conservative initial SAG mill design resulted in a Ball .... Motor and mill bearings (typically) with white metal bearings . Read more
Calculations for mill motor power, mill speed and SAG mill and two 26 ft ball mills, all made by. . Get Price And Support Online; sag mill trunnion lube ring gear lube - mdubiz. Ring motor driven SAG mill for gold . function of a trunnion on lube system on mills - mbba. sag mill trunnion lube ring gear lube. lubrication systems for sag . Get Price
Currently a number of the largest SAG mills designed are installed in single stage configuration. ... single pinion operation. Power demand up to 16 MW. This puts the application in the realm of dual motor, dual pinion installations. Power demand of 16 – 28 MW. ... The SAG mill was installed with a low ball charge, no variable speed and a ...
drive application is a dual-pinion SAG mill driven by two 5,000 kW wound rotor induction motors (WRIM). Two TMdrive-10SPRs control motor speed by recovering rotor current and returning the power to the utility supply. Confi gured in a twin motor arrangement, the motors share …
Like Schenck Process Beast SAG mill screens, the excitation force of the new SLD4397DXX 'mega' screen is delivered by four DF704 exciters mounted on 2 unitary beams. But unlike the Beast, the new screen's drive assembly incorporates a unique twin gearbox arrangement driven via a single motor, ensuring effective exciter phasing.
36' x 24' Fl, Dual Pinion Sag Mill, 2 Abb 9000 KW (12069 HP) Motors For Total Power Of 18, 000 Kw (24138 HP), new A M King Industries | Oroville, CA | Albert King | 530-53...
Single stage SAG Mills are very beneficial in reducing CAPEX for plants with a staged throughput approach. When future tonnage is to be increased, the SAG Mill can feed downstream ball milling to boost capacity. Fuller-Traylor SAG/AG Mills range in size from 4.3m through 12.2m in diameter with powers as high as 28,000 kW.
SAG MILL, 3039 DIAMETER X 739 LONG, 4000 HP MOTOR, 4000hp Synchronous Motor retrofit for Ball Mill. Get Price; Dual Pinion Sag Mills Coal Crushercoal Millcoal Crushers. DUAL PINION MILL DRIVES The SAG and the two ball mills are gear driven and Copper Mountain selected the sophisticated low speed dual pinion mill drives from ABB to. Get Price
With our SAG mill running at 65.4% critical speed (mill @ 8.7 RPM), the SER motor speed reference is 850 RPM or 85% of 1000 RPM. We are recovering approximately 1.2 MW of slip energy; the power ...
Mill drive arrangement. Mill drives are generally located on the outside of the mill to facilitate maintenance. • Mill discharge arrangement. If the SAG and ball mills feed separate pump systems this is not an issue. If the two stages feed the same pump system, …
Apr 18, 2018· SAG Mill Components. Once the basic operating conditions have been defined for the mill designer then, and only then, can he begin taking into account shell and head stresses and trunnion bearing sizes required to carry the load and to give the required openings for feeding and discharging the mills. Mill heads are key structural components of ...
Dec 19, 2014· Advantages of SER drives for SAG mills. Friday, December 19, 2014. For large mills requiring variable speed, the wound rotor motor and SER drive are economical for a total rating of approximately 2MW to 16MW. Above 16MW, the gearless drive (cyclo-converter) is typically used because gearboxes and pinion gears reach their present limit in size.
SAG mill. SAG is an acronym for semi-autogenous grinding. SAG mills are autogenous mills that also use grinding balls like a ball mill. 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 …
8 Ft x 21 Ft Traylor Ball Mill, one extra head in good condition, Bull Gear: 266 tooth excellent condition, Pinion: 20 tooth one spare pinion in good condition, 500hp Synchronous Motor, speed 300 RPM, 4000v, spare Bearing Housings, One spare motor, single door but could support a second door, two complete sets of new rubber liners, shell can be resize to any size.
Sag Mill Motor Stator. Sag mill sag is an acronym for semiautogenous grinding and applies to mills that utilize steel balls in addition to large rocks for grinding the sag mills use a minimal ball charge of 6 to 15 a rotating drum throws large rocks and steel balls in a cataracting motion which causes impact breakage of …
Single stage SAG Mills are very beneficial in reducing CAPEX for plants with a staged throughput approach. When future tonnage is to be increased, the SAG Mill can feed downstream ball milling to boost capacity. Fuller-Traylor SAG/AG Mills range in size …
Designed for the single or dual motor Semi-Autogenous Grinding (SAG) mill market, this new technology addresses all mechanical, electrical, environmental and cost concerns. Delivering unmatched SAG Mill speed and power. Sub and hyper synchronous mill motor speed control is offered without speed deadband.