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, service-friendly and fit for purpose design to
The SIMINE Gearless mill drives pump system significantly enhances concentrator productivity by eliminating the reducer gear between motor and pump and all corresponding maintenance. In addition, the cyclone pumps with variable speed can adjust their energy consumption to the optimized flow of pulp, resulting in energy savings of up to 30%.
The gearless mill drive eliminates ring-gear, pinion, gearbox, coupling, motor shaft and motor bearings, used within a conventional mill drive system. By mounting the rotor poles directly onto the mill, the mill itself becomes the rotor of the gearless motor. Building a track record.
The gearless drive avoids any contact between the rotating mill and the static parts of the motor. This allows for contin- uous workflow without maintenance on the gears or the pinions. What used to be downtime is now productive time. Vibration-free, low-weight, short-circuit- proof design with high stiffness.
Concepts of Gearless Ball-Mill Drives Abstract In the past the conventional method of driving large ball mills included some form of speed reducing gear between the higher speed driving motor and the lower speed ball mill. Learn More. Advantages Of Gearless Drives On Ball Mills.
Jan 25, 2017· Training Simulator for SIMINE Gearless Mill Drives Duration: 3:35. Siemens 2,763 views. 3:35. Overflow Discharge Ball Mill in Operation- Mineral Processing Duration: 1:42.
Gearless mill drives are a well established solution for grinding applications in the minerals and mining industries. The paper describes the functionality and technical features of such drive systems as well as their advantages compared to other drive solutions. Due to the variable speed operation the grinding process can be optimized for
Gearless mill drivesGrinding ABB. combiflex gearbox ballmill drives Several types of ball mill drives can be furnished made up of various combinations of gearing . bell grinding mill in rsa bell grinding mill in rsa. 2 AGC control time chart ll grinding mill in RSA. ballmill
inching drive for sag mill » gear drive sag mill vs gearless drive sag mill » comparison of ball mill to vertical roller mill » ball mill inching drive . Get Price; ball mill inching drives with brakes Mining World Quarry. ball mill inching drives with Gearless Mill Drive Sales Rev Up to 38ft. mills with motor powers of more than 20 MW and
Gearless Mill Drives for Cobre Panama Jan 2018 . Projects previously successfully completed by the division include the installation of six siemens gearless mill drives at various mines in north west zambia of the six abb gearless mill drives being installed at cobre panam, four will power ball mills and the other two will drive sag mills
Several types of ball mill drives can be furnished, made up of various combinations of gearing, motors and transmission equipment. The correct combination to be selected takes into consideration power requirements, gear ratings, floor space, interference from other plant equipment and motor characteristics. The main types are described and illustrated on these pages. Motors considered are
Over recent years, there has been a clear trend towards higher capacity cement production units. Five to ten years ago, 2500 tonnes per day was large. Nowa
Gearless mill drives are becoming the drive system of choice on large AG, SAG and ball mill installations for new projects and existing mill expansions. At least 31 GMDs have been ordered from Siemens and ABB, for example, over the past year or so for mills ranging up to 40 ft in diameter and with drive power ratings up to 28 MW.
Siemens’ gearless drive technology of 99.46 to 99.71% as confirmed by real operational data from the Antapaccay mine in Peru. It was the first plant worldwide to use gearless drives for both applications. KEYWORDS Gearless Mill Drives, Gearless Conveyor Drives, Availability, SAG Mill, Ball Mill, Overland Conveyor, Antapaccay 15
Gearless mill drivesGrinding ABB. combiflex gearbox ballmill drives Several types of ball mill drives can be furnished made up of various combinations of gearing . bell grinding mill in rsa bell grinding mill in rsa. 2 AGC control time chart ll grinding mill in RSA. ballmill
Gearless Mill Drives for Cobre Panama Jan 2018 . Projects previously successfully completed by the division include the installation of six siemens gearless mill drives at various mines in north west zambia of the six abb gearless mill drives being installed at cobre panam, four will power ball mills and the other two will drive sag mills
inching drive for sag mill » gear drive sag mill vs gearless drive sag mill » comparison of ball mill to vertical roller mill » ball mill inching drive . Get Price; ball mill inching drives with brakes Mining World Quarry. ball mill inching drives with Gearless Mill Drive Sales Rev Up to 38ft. mills with motor powers of more than 20 MW and
gearless drives for cement plants with a power range of 3,500 kW to 4,900 kW. By the end of the decade, the company received its first order for a gearless drive for use in the mining industry: the Norwegian mining company Aktieselskabet Sydvaranger ordered a gear- less drive with an output of 8,100 kW of power for an
Overland conveyor drives Geared or gearless. gearless drive mills and crushers gearless mill drive comparison Siemens expands mining portfolio to include gearless drive gearless mill drive27 Aug 2010 Siemens is now able to provide to mining companies a gearless drive 2 x 68 MW for the two ball mills and a 12 MW gearless drive for the SAG mill with its filter circuits A 14 Get .
requirements for a Ø 7.9m x 14.2m LG geared and gearless driven Ball Mill. In this case the GMD requires slightly less space but it does require more concrete. Refer to Figures 11 through 14 below. The actual concrete foundations for geared (Fig 13 & 14) and gearless drives (Fig 12) have also been compared (above ground level).
Siemens, the company that introduced Gearless Mill Drives (GMD) to mining industry started up its first GMD on a ball mill in Norway in 1980. The mill and its drive system are still in service. Today, GMDs are mainly used for SAG mills between 36 and 40 feet (10.7 to
Oct 14, 2020· Gearless motor drive scheme. 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).
Insurability of large gearless mill drives abb group.The availability and reliability of large grinding mills and their gearless mill drives.Understanding the above definition of risk, it is accepted that mining is an the worlds first 26ft diameter ball mill was equipped with a 15.5 mw gmd.Live chat.Read more.
Comparison between girth gear drive and central drive. =;='I Example : Ball mill 9000 HP Motor speed 990 rpm Mill speed 14 rpm R/L ill diameter 5 m Mill bearing 22 m Project A Twopinion girth gear drive Fig. 2A 1 Annulus, 2 pinions 2 Reducing gears, each 2stage 2 Main motors 2 Turning gears Project B