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
Mill upgrade commissioned. ABB has commissioned an upgrade to Vale's existing Clarabelle dual pinion semi-autogenous (SAG) mill (Fig. 1). The mill is used to reduce the size of the ore at the company's nickel and copper mines in the Sudbury area, Ontario. The project was completed on-time and on-budget with an excellent safety record ...
Figure 1 – Top view of SAG mills with alternative drive options; left side: dual pinion drive including motor, gearbox, pinion and girth gear; right side: gearless ring motor: Declining ore grades, leading to increased material transport and …
Grinding (Ball & SAG Mills) SAG Mill shells, Ball/Rod for Mill shells, Ball Mill head in halves, SAG Mill heads. Girth gears, Pinions, Trunnions, Bearings, Lubrication Units. Millrex dual-pinion self-aligning (2,3 & 4 stages) and Ermill single-pinion self-aligning compact lateral drives. Ermaster single, multi-stage and inching drive brake ...
Conga: The world's first 42-foot diameter 28 MW gearless SAG mill ( en - pdf - Technical publication ) Copper Mountain: Overview on the grinding mills and their dual pinion mill …
general, the bigger the mill diameter, the lower are the mill operating and critical speeds. Thus, for larger mills the number of poles will increase. As a result, the number of poles can vary from 48 to 72 poles (Fig. 3.) with typical mill speed requirements of about 10 rpm for larger SAG mills and about 15 rpm for smaller ball mills. Figure 3.
Single or dual pinion drives (with load sharing technologies) Wrap around motors for highest power requirements . Established full line of main bearing technologies to best …
WEG performed unprecedented equipment testing for solution in ball mill drive with dual pinion. 09/17/2013. WEG announced that it has successfully tested its new solution of low speed synchronous motors driven by frequency inverters for mills with dual pinions, at its testing facility in Brazil. Due to the complexity and costs, this equipment ...
general, the bigger the mill diameter, the lower are the mill operating and critical speeds. Thus, for larger mills the number of poles will increase. As a result, the number of poles can vary from 48 to 72 poles (Fig. 3.) with typical mill speed requirements of about 10 rpm for larger SAG mills and about 15 rpm for smaller ball mills. Figure 3.
ONTARIO – ABB, the leading power and automation technology group, has commissioned an upgrade to Vale's existing Clarabelle dual pinion semi-autogenous (SAG) mill.The project was completed on-time and on-budget with an excellent safety record. The Clarabelle mill beneficiates nickel-copper ore from various sources and companies and …
2 d4 TM Mill Drivesystem 7 MW 7 MW 14 MW 28 MW 7 MW 4 MW 7 MW 7 MW 7 MW 4 MW 7 MW 7 MW SAG mill 32 ft. single drive The natural progression in gear/pinion mill drives: The QdX4TM Mill Drive provides the next step in the evolution of change in mill drive architecture, while allowing the system to be built with components that are …
ABB's complete scope of supply included two dual pinion low-speed mill drive systems for a 34-foot 2 x 5.2 MW semiautogenous (SAG) mill and a 24-foot 2 x 7 MW ball mill, engineering and commissioning. The drive systems are comprised of transformers, ACS 6000 MV frequency converters, synchronous motors, advanced mill control, operations …
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.
The grinding process with one 34' x 20' SAG mill and two 24' x 39.5' ball mills will be briefly discussed. All three mills are gear driven by a ring gear, dual pinion and two low speed synchronous motors. Copper Mountain has installed on all three mills, the new state-of-the art dual pinion mill drives.
ABB's supply scope included four dual-pinion low-speed mill drive systems for two SAG mills and two ball mills, each consisting of two synchronous motors, converter transformers and ACS6000 frequency converters. These include active rectifier units allowing the mill drives to achieve a power factor of 0.90 leading.
Each mill is equipped with a 2 x 8500HP dual pinion drive system. The plant was designed to process 1585 h mtpof SAG feed. From startup, the mill struggled to meet the required production rates. Over time, a major initiative that involved blasting and fragmentation, optimization of the SAG mill in terms of discharge grates, ball size and slurry
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When mill power is between 18 and 20 MW, which is the current manufacturing limit of ring geared mills [2], either a gearless mill drive (GMD) or a ring geared mill with dual pinion motors can be ...
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 …
identical QdX4TM Mill Drive units installed in both 40' SAG and 28' Ball mills. This allows for complete interchangeability, and reduced amount of site spares. Economic …
To date, 2 x 8,500 kW = 1 7 MW dual pinion drive ball mills have been sold and are presently operating since 20 12. This marks the highest power dual pi nion drive in the market toda y.
UNUSED FL 36' X 24′ (11M X 7.3M) DUAL PINION SAG MILL WITH 2 ABB 9,000 KW (12,069 HP) VFD MOTORS FOR TOTAL POWER OF 18,000 KW (24,138 HP) Category: Sag Mills Item #: 6C-HMG03 View Details. UNUSED 6,500 TPH CRUSHING HEAP LEACH PROCESSING PLANT. Category: Plants Item #: 18C-OT03 ...