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Mills and GMDs Maarten van de Vijfeijken* looks at large, larger and the largest units in grinding ore T he gearless motor (also called wrap-around motor or ring motor) is a very large synchronous motor. The poles of the motor are directly installed on a pole flange on the mill shell: this means the mill body becomes the rotor. The stator of the
Description: UNUSED FL 40' x 25' (12,192mm x 7,620 mm) Gearless SAG Mill. Motor NOT included but designed for 26,000 Kw (34,866HP) wrap around GMD motor (34,866 HP).
synchronous ring motor (wrap-around motor) is installed concentrically around the mill. The mill shell carries the rotor poles which are individually mounted to form an even air gap with the wrap around motor. The number of poles (up to 76 poles on larger SAG mills) as well as the way the poles are mounted depends on the size of the motor.
New process facilities included a grinding building with SAG and ball mill for primary grinding, flotation, reagent storage, pebble crusher, warehouse and laboratory. Installation included one 34' dia X 19' FL SAG mill with wrap around 32,184 hp motor and one 22' dia X 36' Polysius ball mill with wrap around 12,000 hp motor.
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. ... Wrap around motors for highest power requirements .
he gearless motor (also called wrap-around motor or ring motor) is a very large synchronous motor. The poles of the motor are directly installed on a pole flange on the mill shell: this means the mill body becomes the rotor. The stator of the gearless motor is then wrapped around the mill. With this innovative concept the gearless
X 17' LONG SAG MILL - 36' Dia. x 17' Long EGL with ABB 13,500 kW Wrap Around Drive Motor - Braking System - Complete Liner Package - Feed Chute and Transporter - Hydraulic Jacking System - Special Tooling Package - Trommel Screen Assembly. The SAG Mill was purchased NEW for a project and has never been used.
sag mill motors - sbm-impactcrusher. ... explained that in the past, grinding mills operating between 18MW and 28MW required a large electrical wrap-around motor, known as a gearless mill drive (GMD). The QdX4 mill drive system is an alternative option to the GMD. Until now, the gear-driven solution for large SAG and ball mills was limited ...
17 Oct 2016 . Today, 40 ft. diameter SAG mills and 30 ft. diameter ball mills, both with . exclusively by a wrap around ring motor (gearless mill drive). . In an emergency or power failure, the brakes are used to stop a rotating mill from full. Live Chat
cement industry. The GMD is also known as "wrap-around motor" or "ringmotor". Almost 25 years later, the first GMD with 12.0 MW power and 13.0 rpm was installed in the minerals industry. Since then, numerous GMDs for ball mills and SAG mills have been installed in the minerals industry. The main advantages are that the GMD is
1 x FLS SAG Mill (excl. Motor/Drive) For Sale/Re-Assignment Mill Details Type of Mill FLS SAG Mill Mill Dimensions 12,192 x 7,620 mm (40'x25') (Diam x L) Default Mill Speed 9.31 RPM Mill Speed 7.35-9.90 RPM Liners Metal/Rubber – Excluded Mill Drive Motor Type Wrap Around GMD Mill Drive Motor Size 26,000 kW (34,866 hp)
Unused FL sag mill, 40' (12,192 mm) diameter x 25' (7,620 mm) long, designed for 34,866 HP (26,000 kw) wrap around GMD motor [not included]. No liners. View photos and details.
New process facilities included a grinding building with SAG and ball mill for primary grinding, flotation, reagent storage, pebble crusher, warehouse and laboratory. Installation included one 34' dia X 19' FL SAG mill with wrap around 32,184 hp motor and one 22' dia X 36' Polysius ball mill with wrap around 12,000 hp motor.
Product Detail UNUSED FL 40' x 25' (12,192mm x 7,620 mm) Gearless SAG Mill. Motor NOT included but designed for 26,000 Kw (34,866HP) wrap around GMD motor (34,866 HP) KEY COMPONENTS INCLUDED: - Fabricated Mill Shell (6x120deg) - Cross-Bracing & Lifting Lugs - Cast Mill Feed and Discharge Heads (6x60deg) - Extended Flanges & Lifting Lugs - Demountable Cast FE and DE Mill .
sag mill wrap around motor [PDF] INNOVATION NEWS Mills and GMDs - ABB Group. Mills and GMDs Maarten van de Vijfeijken* looks at large, larger and the largest units in grinding ore T he gearless motor (also called wrap-around motor or ring motor) is a very large synchronous motor.
SAG mill models. Austin SAG model (hybrid phenomenological and empirical model) ... Note that modern wrap-around (gearless) mill drives do a software correction to report mill motor output power (which is the same as shell power). Therefore, new gearless mill drives do not require any correction when comparing DCS power measurements to model ...
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 highest throughput, reliability and availability for your processing plant. ... The motor is fed by ...
UNUSED 38' x 25'5' F/F (11.58m x 7.76m F/F) SAG Mill with 19,400 KW (26,016 HP) Wrap Around Drive Motor. No Liners. EGL - (6.7m) or (22' ft) Default Mill Speed: 7.5 - 8.0 RPM Mill Speed: 7.56 - 10.08 RPM Max. Volumetirc Load: 35% Key Components Included: - Complete Lubrication System - Feed Chute - Trommel Screen - Braking System - Mill Jacking Cradles - Specialty Tools - Export ...
Buy used Sag-mills from A.M. King Industries. We can help guide you to the best solution for your equipment needs. ... (Fuller-Traylor) 36' x 17' Sag Mill with 13,500 kW (18355 HP) Wrap Around Drive. Manufacturer: FL . Inventory ID: 6C-GM01. ... AEROFALL 17' x 5' Sag Mill with 800 HP motor and lube system. Manufacturer: AEROFALL ...
Category: GRINDING MILLS. SubCategory: SAG MILLS. Type: SAG MILL. Manufacturer: FL. Qty: 1. Location: CANADA, EUROPE Condition: NEW SURPLUS Manufacture and Design 40' (12,192 mm) diameter 25' (7620 mm) length Designed for 26,000 KW wrap-around motor * Note: motor .
GROSS POWER CALCULATOR General ... wrap-around motors) are quite different to gear-and-pinion drives. They do not have gears or pinions and hence the term "power at pinion" is not relevant to them. With these drives the literature normally refers ... AG/SAG mills in the data
A gearless synchronous direct drive of the wrap-around design was selected instead, offering several inherent advantages to the owners and operators : The new mill with 10x the rated capacity could be installed in place of the old obsolete 100tph mill without disturbing the remaining 13 mills.
autogenous grinding (SAG) mills, or ball mills. The most important components of a GMD are the following ones: The stator is a massive electro-mechanical structure built around the grinding mill, hence its alternative names "wrap-around motor" and "ring motor" (see Figure 1). Its purpose is to
cement industry. The GMD is also known as "wrap-around motor" or "ringmotor". Almost 25 years later, the first GMD with 12.0 MW power and 13.0 rpm was installed in the minerals industry. Since then, numerous GMDs for ball mills and SAG mills have been installed in the minerals industry. The main advantages are that the GMD is
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