Mining and mineral processing industries
pecific energy savings of more than 5 %. In mineral processing, milling. s a large consumer of electrical energy. ABB offers energy efficient drives solutions for all mill configurations with the gearless motor, providing continual ener. y savings through lower specific energy. Electrical power quality compensation ensures greater efficiency ...
The world's biggest gearless conveyor drive system
The belt conveyor will replace a railway system currently used to transport the ore out of the mine to the processing plant. The Integrated Drive System (IDS) used to power the world's highest-powered gearless conveyor system with an output totaling 12 000 kilowatts is being supplied by Siemens. ... Gearless drives also enable the use of a ...
Integrated drive technology from Siemens enhances …
In future, two gearless mill drives and Sinamics cycloconverters will be used in the new production line with one SAG mill and one ball mill. Thus, one million tons of copper concentrate, 10 000 tons of molybdenum and four million ounces of silver oxide can be mined annually – even at an altitude of around 4600 m above mean sea level.
Commissioning Variable Speed SAG Mill Gearless Drive
Each SAG primary mill (Boliden-Allis) operates with two 5.000 HP. Ball Mills as secondary grinding stage. The Electric Drive (SIEMENS) consists a 11.000 HP synchronous motor of variable speed. General Description of the Drive. The SAG Mill Drive is mainly formed by a 11,000 HP.
Ring-geared mill drives
ABB continuously extends technical and performance frontiers of ring-geared mill drive (RMD) technology to fit your site requirements. We provide optimized mill drive solutions for all types of ring-geared mills: low and high speed, single and dual pinion, with and without a gearbox — all designed for reliable, long life and low maintenance ...
Outotec presents the world's largest SAG mill
Outotec has recently been awarded a contract to deliver one of the largest grinding mills in the world. The contract includes the design and manufacture of a Ø 40' x 29' SAG mill. The mill will be driven by a Gearless Motor Drive (GMD) which at 28.0 MW is equal to the largest grinding mill power ever used in the mining industry. The SAG ...
Gearless drive system for ThyssenKrupp overland conveyor …
The Siemens drive systems for each of the two overland conveyors comprise two low-speed synchronous motors – each with a total power of 4400 kW – and the associated Sinamics SL150 cycloconverters. This gearless drive solution has a number of advantages over the combination of high speed motor and gearbox drives usually used on conveyor …
ABB process control and automation solutions for …
Ensured Results in Mineral Processing (Gearless Mill Drives) ( en - pdf - Brochure ) Pakistan Emerging Market in Cement and Minerals Industries ( en - pdf - Article ) A Team of Drives - Use of multidrives with active front …
Low-speed Gearless Converter Drive
The mill is of the two-compartment type, is 16.5 m long and has a diameter of 4.6 metres. The drive was designed for a speed of 14.6 r.p.m. The reasons prompting the use of a gearless drive were the limited space available, and the difficulties experienced in that factory with large gear units.
Grinding | ABB
More powerful and larger mills, higher ball charges and demanding ambient conditions call for a strong partner for grinding solutions. We help you meet these challenges with our drive systems that come with a long track record in improving performance and extending technical frontiers of all three mineral grinding applications: Gearless mills, ring-geared …
Remote Diagnostic Services for Gearless Mill Drives
The gearless mill drive (GMD) can be considered the workhorse for specific grinding processes found in the mineral processing industries. Therefore, it is of particular importance to ensure that its operation is as rarely interrupted by unplanned downtime as possible, and as close to optimal operating conditions as possible.
Operation of High-Power Cycloconverter-Fed Gearless Drives Under
Gearless Drives under Abnormal Conditions. J. Pontt, Member IEEE, J.Rodr ´ ıguez, Senior Member IEEE, K.Tischler, N.Becker, J.Rebolledo. Abstrac t — This paper presents the behavior of large ...
Gearless Ball Mill Operation
The reliability of large diameter, high horsepower ball mill is paramount when large production and minimum downtime is required. The 17 ft. x 56 ft. double compartment ball mill at St. Lawrence Cement Company has the first gearless drive built in North America and has the world's largest hydrodynamic bearings currently built and running.
Gearless Mill Drives
Antamina Compania Minera Antamina S.A. Peru Project: One SAG Mill and 3 Ball Mill Drive Systems Capacity: SAG Mill 1000 t/h Ball Mills 1000 t/h Consultant: Bechtel, USA Mill Builder: FFE Minerals, USA Mill Size: SAG Mill 38 feet/11,58 m Ball Mills 24 feet/7,32 m Ore processed: Copper/Zinc Drive Rating: SAG Mill 20,1 MW, 9,23 rpm Ball Mills 11,2 MW, …
Gearless mill drives
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 Case for Going Gearless | E & MJ
Its gearless drive system is equipped with two low-speed synchronous motors with cyclo-converters (installed power of 3.8 MW, motor speed of 63 rpm, rated torque at 576 kNm) and a motor cooling system. Load sharing …
Increasing availability through advanced Gearless Drive …
ventional drive systems serving to utilize the principle of economies of scale. By elimination of various components of the drive train, the maintenance activities and spare parts inventories are reduced. The advantages are culminat - ing in the incomparable availability of the Siemens' gearless drive technology of about 99.5% – as confirmed by
Current issues on high-power cycloconverter
The size reduction, crushing and grinding, is one of the main stages in mineral processing, because of energy, material and maintenance costs. Looking at economy of scale, new projects consider the use of big mill grinding circuits, where larger power gearless motor drives with cycloconverters in the range around 20 MW are being applied for ...
Gearless Mill Drive Protection Improvements and Its …
Gearless Mill Drive Protection Improvements and Its Behavior at Minera ndida Ltda. …
Commissioning Variable Speed SAG Mill Gearless Drive
General Description of the Drive. The SAG Mill Drive is mainly formed by a 11,000 HP. Ring Type Synchronous Motor of double winding, fed by two Three–Phased Cycloconverters. The rotor has salient poles without dumping windings and it consists of 72 poles. The cycloconverters work in the out-of-circulation current mode and they are …
Gearless mill drive order in Kazakhstan
ABB recently won an order worth 44 million US$ to deliver three gearless mill drive systems (GMDs) for a new copper mine to be operated by Kazakhmys PLC (Kazakhmys) in southeastern Kazakhstan. The contract was awarded in the first quarter of 2012. Kazakhmys is the largest copper producer in Kazakhstan and one of the top copper …
MOTION Gearless drives for medium-power belt …
01. —. MOTIONGearless drives for medium-power belt conveyorsABB's new permanent magnet (PM) motors for me-dium-power gearless conveyor drives (GCDs. reduce production costs and increase competitiveness. A PM motor, combined with gearless technology, also fulfills eco-design requirements, saves energy,
Products & Solutions for the Mining Industry
GE's MV drive portfolio can help increase operating efficiency, power quality and …
Gearless mill drives
The gearless mill drive eliminates ring-gear, pinion, gearbox, coupling, motor shaft and …
ABB Library
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 …
REMOTE DIAGNOSTIC SERVICES FOR GEARLESS MILL …
The gearless mill drive (GMD) can be considered the workhorse for specific grinding processes found in the mineral processing industries. Therefore, it is of particular importance to ensure that its operation is as rarely interrupted by unplanned downtime as possible, and as close to optimal operating conditions as possible.
Mining solutions | ABB
Build or revamp your mine and mineral processing plant using optimal system solutions, coordinated and seamlessly integrated into fully engineered packages. Our unified, cross-functional, enterprise-wide approach to digital transformation in mining - ABB Ability™ MineOptimize is paving the way from a mine with islands of automation to a fully ...
Long distances, high performance
When it comes to drive sizes exceeding 3500 kW per individual drive, there are no conventional electromechanical drives with electric motors and helical bevel gears. Gearless drives, like those which are state of the art for the mine hoists implemented in underground mining operations, allow the use of larger drive units and are increasingly ...
Geared and gearless Drives of Tumbling Mills
I was told in this forum that economic efficiency is one of the major reasons for the ongoing popularity of Tumbling Mills in mineral processing. Concerning my questions I need some insight of experts with practical experience. Looking at SAG mills for instance there are huge differences in CAPEX regarding their different drive systems.
TECHNICAL AND COMMERCIAL BENEFITS OF GEARLESS …
Gearless mill drives are a well established solution for grinding applications in the …