mill motor options that are currently able to meet these limitations. II. SYSTEMS TO BE CONSIDERED The following five drives systems are to be studied: • Drive 1 - A 5000 HP, 1200 rpm wound rotor motor with liquid rheostat and power factor correction capacitors to a dual pinion gear driven mill;
has been selected to design and supply a 42 ft x 25 ft, (12.8m x 7.6m) 28 MW gearless SAG mill, plus two 26 ft x 42 ft, (7.9m x 12.8m) 15.6 MW ball mills and two VTM-1500-WB VERTIMILLS ® for Newmont Mining Corporation's Yanacocha Conga copper-gold project in Peru. The 42 ft diameter SAG mill is the world's largest and is the first of its kind.
The order for Ingeteam comprises the supply of medium voltage frequency converter, step down transformer and induction motor for the SAG mill, and Liquid Rheostat Starter (LRS) and slip ring motor for the ball mill. The scope also includes related engineering and on-site services.
This puts the application in the realm of dual motor, dual pinion installations. xPower demand of 16 – 28 MW. ... The SAG mill model in the JKSimMet software has not been shown to accurately reproduce the performance of a single stage mill for greenfield design. A review of most modern power models shows that the prediction of
SAG Mill power draw models are used in mill design and grinding circuit modelling to predict how much power will be consumed by a particular mill geometry and operating configuration. This paper will compare SAG mill models by Morrell, Loveday (using "Power Numbers" published by Barratt) and Austin against several published mill surveys.
Single-pinion and dual-pinion fixed-speed gear drives offer a relatively simple design. However, process flexibility and optimization ... 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 ...
To a more significant degree than in other comminution devices, SAG Mill Liner Design and Configuration can have a substantial effect mill performance. In. ... Interlock mill drive motor(s) with new ore feed supply so that mill, especially a semi-autogenous mill, does not run "starved" for feed. This will reduce occasions for damage to mill ...
Induction motors For ball and SAG/AG mills with single or dual pinion configuration, Slip Ring Motors drive the gearboxes and are normally used when fixed speed and low starting current are required. WEG Induction Motors (Master Line) are designed with air cooling system (totally enclosed air-air cooling) or water
WEG performed unprecedented equipment testing for solution in ball mill drive with dual pinion.
Ball mills and SAG mills, vertica l grinding mills for raw or finishing sec tions all have a constant torq ue speed characteristic, however the starting torques, comminution process and material ...
mill work index 11.4 kWh/t and an average RQD of 44%. RQD values of 25% resulted in a SAG mill feed size (F80) between 55 and 60 mm and throughputs of 6200 t/h. RQD values of 55% resulted in SAG mill feed size (F80) of over 70 mm and a SAG mill throughput of 5200 t/h. The Batu Hijau SAG mill specific energy was a function of point load test and ...
New Human Machine Interface - RMD Cockpit. With the RMD plus solution, operations and maintenance activities are fully optimized with the newly developed Human Machine Interface "RMDcockpit".. Based on ABB's 800xA platform, the RMDcockpit is a specific mill application tool comprised of a touch screen panel allowing full access to the main parameters of the drive …
With the new QdX4 mill drive system, has converted a dual system into a quad system that equally distributes input power from two load-sharing motors into four pinions. Until now, gear-driven solutions for large SAG and ball mills have been limited to 18 MW.
Search through large online inventory of used Ball mills, Sag mills, Pebble Mills, grinder mills for Chemical and Processing industry. ... 1,000 HP (750 kW) 60 HZ motors., Mill #1 Diameter: 3.4m, Effective Grinding Length (EGL): 5.2m. Mill #2 Diameter: 3.2m, Effective Grinding Length (EGL): ... GE Dual Pinion AG Ball Mill Electrical Drive ...
Paper held at SAG Conference 2011 - By S. Gaulocher (ABB), K.S. Stadler (ABB), Th. von Hoff (ABB), R. Veldsman (ABB), A. Fuerst (ABB) and J. Koponen (ABB): Gearless mill drives (GMDs) are the workhorse in the mineral processing industries, more specifically when it comes to grinding crushed ore and cement (in various production stages) in semiautogenous (SAG) …
performing SAG mill. It is possible in some cases to modify a SAG circuit to force it to perform better, but this often takes time, much effort and costly modifications. In most cases the capital spent on a properly sized SAG mill may prevent production losses that would be many times greater over the extended start up period.
The instrumentation installed on a SAG mill is integral to control. For example, the mill load and noise sensors are instruments that provide essential information for an optimized SAG mill operation. Insufficient understanding of the ore characteristics and feed composition can result in an ineffective SAG mill operation.
Find new and used Grinding Mills - Ball, Pebble, Sag, Mining. go to top. ... with 10,000 kW (13,410 HP) fixed speed dual motor-gearbox-pinion drive. Designed as an overflow ball mill with rubber liners. ... motors: 60 Hertz, - Bull Gear: Helical, 334 tooth, 3 ft face, - Pinion: 18 tooth, - No liners, - Drawings available for mill and ...
ABB's Gearless mill drive system is the most powerful mill drive system in the market to power semiautogenous (SAG), ball and autogenous (AG) mills
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 pinions. Autogenous grinding means that the mining ore essentially grinds itself. Such ball mills are used for grinding and crushing mining ore within a large rotating drum.
Mill drive selection for semiautogenous grinding mills
SAG mill drives. There are two types of SAG mill drives. Power is transmitted to the grind-ing mill either through a pinion and ring.
— Ball/SAG mills with up to 8'000 kW per motor, typically geared solutions ('high-speed') using asynchronous motors with 6-8 poles and rated speed 1'000 – 1'800 rpm ... — RMD with up to 9'000 kW as single pinion and up to 18'000 kW as dual pinion — GMD with typical power over 5'000 kW, using special low speed ring motors ...
AN UPDATED DATA SET FOR SAG MILL POWER MODEL CALIBRATION *A. G. Doll SAGMILLING Logan Lake, Canada ABSTRACT This paper expands the SAG mill survey database published by the Author at Procemin 2013. The new database includes 49 published SAG/AG mill surveys and includes mills from all over the world. The
