This two-stage grinding circuit consists of a 40 ft SAG mill with a 20 MW Siemens gearless drive and two parallel 10 MW gear driven ball mills. Siemens has now fitted the SAG mill with a Sinamics SL 150 cycloconverter for closed-loop control as well as with a Sinamics DCM control module for the excitation circuit the first time that both
Gearless Mill Drives ABB Ltd. Project: One SAG Mill and 3 Ball Mill Drive Systems Capacity: SAG Mill 1000 t/h Ball Mills 1000 t/h Consultant: Four complete Gearless Mill Drive Systems including: Wrap-around Motors Cycloconverters & Excitations ABB offers comprehensive packages of ABB competencies, products and services for the. ABB commissions ...
gearless ball mills in portugal. We are a professional mining machinery manufacturer, the main equipment including: jaw crusher, cone crusher and other sandstone equipment;Ball mill, flotation machine, concentrator and other beneficiation equipment; Powder Grinding Plant, rotary dryer, briquette machine, mining, metallurgy and other related equipment. which can crush all kinds of metal and non ...
Drive Selection For Ball Mill. Ball mill wikipedia 2020-06-16 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.
The plant will have two production lines with a SAG mill and a ball mill for each by means of two 5.2-kilometre long conveyor belts powered by gearless drives. A mill is a device that breaks solid materials into smaller pieces by grinding, crushing, or cutting . stages of mineral processing, one example being the Sepro tyre drive Grinding Mill.
Gearless mill drives - Grinding (ABB in Mining) - ABB Group. ABB's Gearless mill drive system is the most powerful mill drive system in the market to power semiautogenous (SAG), ball …
The ball mill drive motor choices to the ball mill machine . Mar , ball mill are used primaryfor single stage fine grindingIt is the key equipment that repulverzes the material affter it is crushed,which is widely used in the manufacture industries,such as cement,silicate,new building material,refractory materail,fertilizer,mill.
Gearless Mill Drives . 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 11 38 rpm Award of Contract March 1999 Start of Operation June 2001 ABB's scope of supply Four complete Gearless
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 ores with varying grinding properties.
Laguna Seca concentrator uses a SAG mill and three ball mills, all driven by gearless mill drive (GMD) systems. Table 1 gives an overview of the basic technical data of the installed drives. TABLE I. MILLS AND THEIR DRIVES IN THE LAGUNA SECA PLANT Equipment Drive Comments SAG Mill (Semi-autogenous Grinding) Quantity : 1 unit
gearless ball mill drive. If you want to learn about our products , please call or write mail consultation. Each sag primary mill bolidenallis operates with two hp ball mills as secondary grinding stage the electric drive siemens consists a hp synchronous motor of variable speed general description of the drive the sag mill drive is mainly formed by a , hp
advantages of gearless drives on ball mills. GEARED VS GEARLESS DRIVE SOLUTIONS FOR GRINDING MILLS. Evaluating the merits of large geared mills versus gearless driven ... Get Price. gearless mill drive comparison – Grinding . ... Designing A Ball Mill Driven By Hydraulic .
Of the six ABB gearless mill drives being installed at Cobre Panamá, four will power ball mills and the other two will drive SAG mills. Importantly, these massive machines are among the largest ever installed in the world and were transported in quartered sections to site for assembly in-situ.
Gearless Mill Drive System Greenrevolutiong. Insurability of large gearless mill drives698.Figure 1 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.
Gearless mill drives Grinding ABB. 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 provide highest throughput, reliability
Gearless mill drives Grinding ABB...We are a professional mining machinery manufacturer, the main equipment including: jaw crusher, cone crusher and other sandstone equipment;Ball mill, flotation machine, concentrator and other beneficiation equipment; Powder Grinding Plant, rotary dryer, briquette machine, mining, metallurgy and other related equipment. which can crush all kinds of metal and ...
The gearless mill drive eliminates all rotating ball mill in Carlin, Nevada with higher installed power ratings relative ... drive calculation for a ball mill BALL MILL DRIVE MOTOR CHOICES For Presentation at the,speed is given by the following calculation: Time = WK2x Speed Change 308 x Avg. Acc. Torque where:
FQM has opted for Siemens Gearless Mill Drives to be used in the two SAG mills having a diameter of 40 feet and an output of 28 MW and the two ball mills with a diameter of 28 feet and an output of 22 MW. With these mill drive systems there is no wear in the drive train since all forces are transferred touch-free via a magnetic field.
Gearless drives are found in a number of ... a 29 MW drive for the 40-foot SAG mill and two 22 MW drives for the 28-foot ball mills. Get Price Here ! drives of ball mills which is the best in mining
The SAG mill drive package is rated at 21 MW; the ball mill drives at 16.4 MW. • An order in May 2008 valued at more than €20 million from Aurox Resources Ltd. to supply gearless drives for a 34-ft-diameter, 14-MW SAG mill and a 26-ft-diameter, 17-MW ball mill for an iron ore project in Western Australia.
gearless ball mill drive Gearless drive systems for belt conveyor and grinding mills - Siemens 18 Feb 2013 . advantages of gearless drives on ball mills how brake operated in auxiliary drive of ball millBINQ Mining CachedTECHNICAL AND COMMERCIAL ball . Learn More
ABB’s new Gearless Mill Drive generation: Maintenance. Ball Mill SAG Mill Figure 2 Core pressing system with spring plate/washer and re-tightening statistics in a typical installation Access to the inside of the motor and the cooling system The easier the access to the inside of the motor is, the more convenient and efficient is the work on the motor.
Gearless Drive Mills And Crushers And Mw. Citic hic manufacture a full range of grinding mills for the mining sector 11m 28mw gearless drive ag mills and 21679m x 136m 2x8 mw twin pinion drive ball mills ball mill and a 21611m x 54m 2x85mw sag millbeing the largest in china hoist in jkmd series and jkyb3x25xp hydraulic antiexplosion hoist get price
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The company selected ABB's 26 MW gearless mill drive system (GMD) for the mine’s 40 ft SAG mill, as well as other drives, electrical infrastructure equipment and a long-term service agreement (LTSA). This is expected to reduce operating costs, improve process throughput and reliability while saving energy and keep equipment in top form.
gearless ball mill india Pochiraju Industries Ltd. Gearless mill drives Grinding ABB in Mining ABB Group ABBs Gearless mill drive system is the most powerful mill drive system in the market to power semiautogenous SAG ball and autogenous AG mills. More Details