gearless ring motor for sag mill principles

  • Gearless drive systems for belt conveyor and grinding ...

    Gearless drive systems for belt conveyor and grinding ...

    Feb 18, 2013· The size of the motor is not limited by the size of gearbox available, thus eliminating the necessity to install multimotor drives. ... The SAG mill was fitted with a gearless drive with a power ...

  • ABB Process Automation

    ABB Process Automation

    ABB Process Automation Veli Matti Reinikkala ... The Gearless Mill Drive (GMD) The rotor poles of the motor are installed on site to the mill. The ringmotor or wraparoundmotor is wrapped on site around the mill. The motor is controlled with ABB power electronics (cyclo converter) ...

  • Industrial Solutions Autogenous,

    Industrial Solutions Autogenous,

    Principle of the direct drive. Tube mill with direct drive. SAG mill with COMBIFLEX® drive for gold ore grinding. Ball mill with ring motor drive. Brake of a ring motor drive. 8 Flotation Wet grinding Grinding is one of the most energyintensive production stages and therefore has

  • Allis Chalmers Ball Mill Bull Gear (Used) for Sale in ...

    Allis Chalmers Ball Mill Bull Gear (Used) for Sale in ...

    Allis Chalmers Ball Mill Bull Gear ... UNUSED 36' X 23' AG Mill w/1500 KW Motor and 22' X 41' Regrind Ball Mill 13,405 HP Total Power, ... UNUSED 40' x 25' Gearless SAG Mill, and 26' x 40'6" Ball Mills, SVEDALA / Model VTM800WB Vertimill With 600 KW (805 HP) Motor,

  • Drives systems for grinding Solutions for all applications

    Drives systems for grinding Solutions for all applications

    Ball and SAG mill drives All of ABB's grinding solutions are adjustable in speed, guaranteeing milling efficiency with operational flexibility. Ringgeared as well as gearless mill drives have a complete set of features specially ... with the motor directly coupled to the mill eliminating the need for an airclutch.

  • ABB Commissions Gearless Mill Drivers, Shares Fall Yahoo

    ABB Commissions Gearless Mill Drivers, Shares Fall Yahoo

    Jun 16, 2014· ABB Commissions Gearless Mill Drivers, Shares Fall ... fell % after the company announced on Jun 12 that it has completed the deployment of three gearless mill drive ... motor .

  • ABB to deliver three large gearless mill drives for ...

    ABB to deliver three large gearless mill drives for ...

    ABB's scope of supply consists of three complete GMD systems including transformers, ring motors and Ehouse. One 26 megawatt GMD system will be installed for a 40foot diameter SAG mill, while two megawatt GMD systems will be installed to drive two 27foot diameter ball mills.

  • Selecting Inching Drives for Mill and Kiln Applications

    Selecting Inching Drives for Mill and Kiln Applications

    Selecting Inching Drives for Mill and Kiln Applications Glen Cahala Frank C Uherek, Principal Engineer Gear Engineering Software Development Abstract The inching drive, also known as a barring or auxiliary drive, is an important component of any mill or kiln installation. It is used for maintenance and inspection purposes, as

  • MILL DRIVES FOR CEMENT INDUSTRY TOPICS FOR .

    MILL DRIVES FOR CEMENT INDUSTRY TOPICS FOR .

    MILL DRIVES FOR CEMENT INDUSTRY NATHAN SCHACHTER CIMENTEC ENGINEERING LTD. October 29, 2006 2 A. Ball Mill Drives SINGLE MOTOR DRIVES • Ring gear and pinion with lowspeed synchronous motor and air clutch • Ring gear and pinion with highspeed motor, gearbox and fluid coupling ... D. GEARLESS BALL MILL DRIVE • For large mills, greater ...

  • ABB commissions first gearless mill drives project in Canada

    ABB commissions first gearless mill drives project in Canada

    Baden, Switzerland, May 25, 2011 – ABB, the leading power and automation technology group, has completed commissioning of the first gearless mill drive (GMD) system operating in Canada. The GMD powers a 38foot semiautogenous (SAG) mill at the Canadian Malartic gold mine, which is owned by Osisko Mining Corporation.

  • ABB helps the world's newest copper mine take off

    ABB helps the world's newest copper mine take off

    Each ABB gearless mill drive system comprises a large gearless synchronous motor that is wrapped around the mill like a ring. The power and control equipment of the system is located in a purposebuilt Ehouse container with builtin cycloconverter, motor control center and programmable logic controller (PLC), converter transformers and ...

  • Gearless Drives for Ore Conveying and Grinding Cmms ...

    Gearless Drives for Ore Conveying and Grinding Cmms ...

    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 ( to m) and ball mills .

  • ABB in Mining Mineral Processing Business Unit Mining

    ABB in Mining Mineral Processing Business Unit Mining

    ABB in Mining Mineral Processing Business Unit Mining ... Drives and motors ... Gearless Ring Mill Drives HVSubstation Knowledge Manager Grounding Supervision of Erection HV/LV drives motors Transformers MultiDrives Instrumentation Lighting Commissioning Optimization Packages

  • carbon brush 65x32x25mm grade sag ball mill

    carbon brush 65x32x25mm grade sag ball mill

    SAG mills are autogenous mills but use grinding balls like a ball mill. () in diameter, powered by a 28 MW (38,000 HP) motor. Gearless AG/SAG mills . is the world's leading supplier of gearless AG/SAG mills. Today a single grinding line with a Gearless SAG mill and appropriate ball mills can process The design features motor rotor elements ...

  • Outotec Grinding technologies

    Outotec Grinding technologies

    Outotec Grinding technologies 007 the mill drive train to be brought closer to the mill, which in turn allows for smaller foundations and lower installation costs. Mill drives Most mills are driven by ring gears, with a 360° fully enclosing guard. The ring gear casting material is either nodular iron, cast or forged steel. These gears are usually

  • SAG Mill Process Control Grinding Classification ...

    SAG Mill Process Control Grinding Classification ...

    Underground mines are an example: the hoisting capacity of the mine shaft is the ratelimiting step in the process, and the SAG mill must adapt to what the shaft can supply. So yes, there are situations where constant tonnage is appropriate; but most SAG mill operators should target constant power draw.