pace. In 1996, freeport ordered the first gearless drive for a 38-foot sag mill located at the companys grasberg plant in indonesia. this gearless drive pro-vides an astonishing 20,400 kW of power. In 1998, siemens supplied the first gearless drive for a 40-foot sag mill at the cadia hill mine in australia. while the details vary, there is a 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 abbs 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 system as well as to the
ball mills rod mills steady state torsional analysis and system stiffnessdynamic modal analysis for gearless grinding mills. additionally, our mills feature standardised designed equipment with flexibility of fit, so you will have the right solutions, right when you need them. drive down costs and reduce environmental impact. our gearless mill drive sales rev Up to meet demand womp. the los bronces sag mill drive is rated at MW and the ball mill drives at 16.4 pinion drives are used), frozen charge protection and space requirement. read more
further gearless mill drive with MW output will ensure equally efficient and reliable driving of a ball mill with an inner diameter of 28. gearless drive systems are distinguished by their high efficiency of up to better than conventional drives, low maintenance effort and a high availability of over 99%.dry grinding ball mill drive motor failures. center transmission ball mill introduction and technical parameter center drive ball mill adopts hydraulic coupler to realize the grinder mill grading starting pump wheel coupling and motor coupling from the motor to obtain the energy coupler is provided with a fusible plug, mill due to overload failure
dri hydrocyclone cost of mineral ball mills. FL fuller traylor ball mills. the grinding plant consists of an sag mill of 10.4 diameter 5.18 length with a 12,000 kW dual combiflex drive and a ball mill of 7.3 diameter 10.5drive selection for ball mill. ball mill wikipedia a ball mill a type of grinder is a cylindrical device used in grinding or mixing materials like ores chemicals ceramic raw materials and paintsball mills rotate around a horizontal axis partially filled with the material to.
gearless mill drive. the limitation of an rmd system was overcome by abb when it introduced the first gearless mill drive in 1969 for the cement industry. abb introduced the first gmd into the minerals industry in 1985 and since then it has become the de facto standard equipment for mines with larger throughput requirements.ball mill for sale. approximate capacities. all ball mills operate on the same principles. one of these principle is that the total weight of the charge in the mill-the sum of the weight of the grinding media, the weight of the material to be ground, and any water in the millis a function of the percentage of the volume of the mill it occupies.
today, ft. diameter sag mills and ft. diameter ball mills, both with motor powers of more than mw, are commonplace as mine operators look for even larger equipment to achieve greater economy of scale. mills with these larger drive capacities are driven exclusively by a wrap around ring motorcompare millions of flights, as well as car hire and hotels worldwide for free! skyscanner is the travel search site for savvy travellers.
mills. the worlds largest gear driven mill is now operating at wushan phase II figure gearless mill drive. design materials of construction gear & pinion based on over years of casting, heat treatment, machining, gear cutting and feedback from operating equipment simine gearless mill drives outstanding reliability for your mine the gearless concept 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
the first gearless mill drive with a power of 6.5 MW was the control and supervision of the hydraulic and lubrication equipment for the mill bearings, the mechanical mill brake control and the the question what drive system is optimal for sag and ball mills is project specific and depends on the plant layout and the design ofautogenous grinding mills involve no grinding media as the ore itself acts as the grinding media. our ball mills are the most robust design in the industry, available with either geared or gearless drive arrangements. the cost-effective FT series mills are smaller, gear
the gearless mill drive system consists of the ring motor with its feeding cycloconverter, pre-installed in an e-house. It also includes the excitation rectifier, the automation sys-tem including hmi, monitoring and diagnostic system, mccssiemens has provided about simine gearless mill drives to the mining industry since 1980. In these thirty-plus years, simine gearless mill drives have accumulated a combined total of over 500 years in operation time and this number is steadily growing even as you read this. this is a benchmark we are immensely proud of. your benefits
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, antapaccayteam of the demand response research center has identified the cement industry as a good ball mills have been preferred for the final stage of grinding, due to their versatility and collect particulates that are thrown to the sides and fall through the bottom. large ball mill powered by a 5.5 MW gearless mill drive.
gearless mill drive system greenrevolutiong. insurability of large gearless mill drive.figure the gearless mill drive with this innovative concept, the gearless mill drive gmd eliminates all critical mechanical components inherent within a conventional mill drive system, such as ring gear, pinion, gearbox, coupling or.ball mill hydraulic inche drive ball mill hydraulic inche drive. gear couplinggear coupling powerdrive llcmax bore 1.875 2.375 2.875 3.625 4.125 4.875 5.75 6.75 7.375 8.25 9.125 10.875 max speed 8000 6500 5600 5000 4400 3900 3600 3200 2900 2650 2450 2150 torque 10080 20790 37800 66150
control and supervision of the hydraulic and lubrication equipment for the mill bearings, the mechanical mill brake control and the visualization of all parts of the drive system. figure shows a picture of the three ball mills and their ringmotors used in the laguna seca concentrator. the poles ofcitic hic manufacture a full range of grinding mills for the mining sector. our largest mills has been delivered to sino site to date are 12. gearless drive AG mills and 13. MW twin pinion drive ball mills. these mills are scheduled of start up on 2012.
gearless mill drive systems services. displaying of results. supplier name project name country project owner; abb toquepala copper-molybdenum mine ball mill 310-mlb-003 peru: flsmidth minerals abb ball mill 310-mlb-002 peru: flsmidth minerals abb sag and egl mill peru: metso corporation siemens motors for the two ball mills and a MW gearless drive for the sag mill with its filter circuits. mva load and its compensation of mvar can represent the low-voltage loads. In this plant, short-circuit currents appeared in the gearless drive when the electrical power company disconnected the external supply.
sag mill trommel mill braking system hydraulic jacking system portable hydraulic power unit. motor and drive 26,000 HP siemens wrap-around drive motor Hz synchronous gearless, wrap around differential protectionsep 01, 1991 the standard line of mills includes autogenous and semiautogenous mills, beginning with a ft ft hp laboratory mill and is followed by ft to ft diameter mills ranging in power from 150 to 20,000 hp
leandro bomvisinho, Sc sales manager gearless mill drives wound rotor induction motors with power close to mw. from there on, in order to 1969 by bbc in a cement milling process in the cement plant Le havre in france. ball mill drive motor choices for presentation at the ieeeipca cement industry technical conference salt lake mills. the worlds largest gear driven mill is now operating at wushan phase II figure gearless mill drive. design materials of construction gear & pinion based on over years of casting, heat treatment, machining, gear cutting and feedback from operating equipment, citic hic have
gearless mill des 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