ge mineral processing gearless drives

ABB Library

ID:9AKK108467A6045, REV:C English ABB's Marcelo Perrucci explains how Gearless mill drives, digitalization, AI and analytics are transforming grinding operations at mines …

Periodic Maintenance Reports (PMRs) for Gearless Mill …

Periodic Maintenance Reports for Gearless Mill Drives From corrective to predictive maintenance Gearless Mill Drive (GMD)– the bottleneck in mineral processing: High …

AT MINERAL PROCESSING, 7-8/2012, pp 49-62 [2] Harder, J.: Energy efficiency – Energy intensity in copper and gold mining. AT MINERAL PROCESSING, 10/2017, pp. 46-57 ... Chile´s Minera Los Pelambres Ltda. is operating a new SAG mill and a new ball mill equipped with gearless drives systems by Siemens. The mills are intended to increase ...

SIMINE Gearless mill drives

Gearless mill drives. Longer service intervals thanks to low-wear drive processes SIMINE Gearless mill drives' rpms can be tailored to your operations at any time, and are infinitely variable and uncomplicated. Whether manually or fully automatic – rpms can be adjusted to account for the proper-ties of the ore, resulting in significantly less

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 systems.

Ring-geared mill drives

Ring-geared mill drive system. ABB eBook: Grinding transformation. What forward-thinking mines are doing. (English - pdf - White paper) Our RMD offers high flexibility and smooth operation with its functionalities developed and customized for grinding application in mining.

Mining electrification and infrastructure | ABB

For your World, and Mine. Building on decades of experience in mining project electrification and over 10 years' experience in providing charging infrastructure for buses, trucks and cars, we are able to offer solutions that are uniquely designed to handle the requirements of the mining industry based on the latest technologies.

Electrical Generators for Large Wind Turbine: Trends and …

This paper presents an overview of the emerging trends in the development of electrical generators for large wind turbines. To describe the developments in the design of electrical generators, it is necessary to look at the conversion system as a whole, and then, the structural and mechanical performances of the drive train need to be …

TECHNICAL AND COMMERCIAL BENEFITS OF …

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 …

Operation of High Power Cycloconverter-Fed Gearless …

Keywords—Mill Drives, Cycloconverters, Gearless Drives. ... critical activities in mineral processing. Economic ... conditions of the drive. The mechanism of overcurrent ge-

Gearless Mill Drive Protection Improvements and Its …

Gearless Mill Drive Protection Improvements and Its Behavior at Minera Escondida Ltda. Abstract—A cycloconverter-fed gearless mill drive is a drive system that has hardware …

ABB in Mining

Gearless mill drives and the clean energy transition - Global Mining Review - October 22 (English - pdf - Article) A long and winding road - International Mining - hoist feature - August 2022 (English - pdf - …

Gearless mill drives

Our GMD eliminates all mechanical components of a conventional mill drive system, such as ring-gear, pinion, gearbox, coupling, motor shaft and motor bearings: By mounting the rotor poles directly onto the mill, the mill itself …

Gearless conveyor drives

Do more with less - go gearless. Mine operators are challenged with moving more material on conveyors that may cover distances in the tens of kilometers and ascend steep gradients. To increase overall reliability, …

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 ...

Gearless mill drive (GMD) and digital services for Kinross Tasiast …

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 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.

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.

Mill drives: the desire for increased power and the

For single pinion and dual pinion drives, with 21 MW now a distinct possibility, the probability of pinion changes to a higher mill speed should always be considered when set-ting gear ratios, service factors, and motor power ratings. For gearless drives, motor torque output at the maximum desired operating mill speed and ball charge volume has to

DEC

The gearless drive came into the mineral industry in 1980 and as per their reference lists, Siemens has approximately 60 installations and ABB has approximately 85. The reasons why these gearless drives on mills came about in the late 1970s is because of SAG mills requiring variable speed and the limitations of material of construction and the ...

Mining and mineral processing industries

energy savings of more than 5 %. In mineral processing, milling is a large consumer of electrical energy. ABB offers energy efficient drives solutions for all mill configurations …

Resonance effects, power quality and reliability issues of high …

Comminution is one of the main stages in mineral processing, because of investment, energy, materials and maintenance costs. Looking for economies of scale, new projects consider big mill grinding circuits, with large power gearless motor drives (GMD) fed by cycloconverters in the range of 10–20 MW, as shown in Table 1.

SIMINE Gearless mill drives

Gearless mill drives. Longer service intervals thanks to low-wear drive processes SIMINE Gearless mill drives' rpms can be tailored to your operations at any time, and are …

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 ...

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 between the two drives can be adjusted according to the requirements of the belt conveyor.

Current issues on high-power cycloconverter

Fig. 9, Industrial Power System with 4 Gearless Motor Drives (GMD). Fig. 6, Zero crossing of m otor current @ 7. 1 Hz (simulation) . errors of the observed internal variables.

Integrated drive technology from Siemens enhances productivity

The Siemens Drive Technologies Division is delivering an Integrated Drive System for two new mills for the Toromocho mine in the Peruvian province of Yauli. The order comes from Minera Chinalco Per S.A., a subsidiary of Aluminum Corporation of China (CHINALCO). In future, two gearless mill drives and Sinamics cycloconverters will be used in the ...