The SIMINE Gearless mill drives' sealing system has a proven design incorporat- ing extremely low maintenance with ingress protection that is rated at IP 55, and complemented by a purpose-built rain shield. The outdoor version of SIMINE Gearless mill drives means that a concentrator building is not needed, a considerable investment capital saving.

from 320 kg up to 630 kg carrying capacity; 160 mm, 210 mm and 240 mm traction sheave options; Compact design; 1:1 and 2:1 suspention options.

Gearless mill drive system in iron ore ­processing. ABB was recently contracted to supply gearless mill drive (GMD) systems for two 38 foot semiautogenous grinding (SAG) mills at the Serra Azul iron ore mine in Brazil. The Serra Azul mine unit, owned by MMX Mineração e ­Metálicos, an EBX Group company, is located in the iron quadrangle of ...

Commissioning Variable Speed SAG Mill Gearless Drive. The electric operation and design features of the 11,000 H.P. variable speed SAG mill gearless drive is presented. The function of the frequency-converter, control system drive and lubrication systems are described. An analysis of the harmonic characteristic in the Supply System and …

ABB gearless mill drive systems feature numerous benefits when compared with conventional geared drive systems: superior reliability, increased process availability, extended life span and improved energy efficiency. ABB delivered the world s first gearless machine drive in 1969, which is still operating at the Ciment Lamberg-Lafarge cement ...

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The outdoor version of the SIMINE Gearless Mill Drives has been successfully in operation since 1998. The design of the outdoor version takes into account the tough ambi-ent conditions as well as the absorption of solar radiation. The sealing system of the SIMINE Gearless Mill Drives is a proven design incorporating extremely low mainte-

A cycloconverter-fed gearless mill drive is a drive system that has hardware and software protection functions to protect the equipment in case of abnormal operating conditions, malfunctions or ...

Thermowells have long been considered the best solution for measuring temperature in industrial applications. Dr. Guruprasad Sosale explains how developments in non-invasive temperature measurement are offering new possibilities for comparable performance while cutting the time, cost and disruption associated with setting up new measurement points.

Developed plans & funding requests for innovations worth >$1MM for custom-built rotating machines, including a synchronous gearless mill drive (GMD) mine motor & next-generation high-reliability insulation system convergence for GE Motors plants in Canada, Brazil, UK, France & Mexico; participated in development strategy sessions with R&D Managers & Product Line …

2 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 …

ABB commissions gearless mill drive system at Peru's largest gold mine. 09 June 2008. ABB announced it has successfully completed commissioning of a 16.5 MW gearless mill drive (GMD) system for a SAG (semiautogenous) mill at Minera Yanacocha. The mine, located in Cajamarca, Peru, is the largest gold producer in Latin America.

Gearless Belt Conveyor Drives: New Technology for high Capacity Systems (M. Dilefeld) If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed.

In all, two 28-megawatt gearless mill drive systems (GMDs) are in use at the mine's 40ft SAG mills, and four 16.5MW GMDs are employed in 26 football mills. "Gearless mill drives are the 'workhorses' for grinding operations, which are at the heart of any mine," ABB's Cobre Panama project manager Rene Chacon said.

Gearless Mill Drive Optical Systems polyimpex . Advantages of gearless drives on ball mills for installation and commissioning of four gearless ball mill drive systems gearless mill drive optical systems Get Price sag mill maintenance Automatic Mill To be familiarized with the ABB s Gearless mill drive system is the most powerful mill ing methods iron ore Get Price And …

gearless ball mill imag, gearless drive is used at Cadia 20 MW, a ball mill, and a SAG mill,, for example mills with a direct drive or gearless .... 465 mw vertical grinding mill motor siemens - …

gearless mill drive optical systems glamface . gearless mill drive accionamiento molino. ball mill motor drives ABB gearless mill drives GMD . 28 Jan 2015, ABB''s GMD is the most powerful mill drive system in the market to power semiautogenous (SAG), ball and autogenous, By mounting the rotor poles directly onto the mill, the mill itself becomes the rotor of the gearless.

The gearless PRA 230 wheel drive is an external-rotor motor with built-in wheel bearing and is mounted directly on the rim. Successfully employed many times over, this wheel drive is maintenance-free, quiet and boasts impressive braking energy recuperation and a …

The focus of this work is an investigation of the electromagnetic part of a gearless mill drive based on real system data which is part of a larger project building a multiphysics model including ...

Gearless mill drive system (GMD) Maximum availability and productivity Go gearless to meet your business objetives by exceeding standard availability targets in your grinding operations.

tional mill drive system, such as ring-gear, pinion, gearbox, coupling,, Cie) commissioned the first GMD ever, a 64 MW gearless motor for a ball mill at Ciments Lambert-Lafarge in Le Havre, France Still operating today, it has proven to perform cost-effectively and with long-term reliability, our gearless mill drives are designed to.

The SIMINE Gearless mill drives pump system significantly enhances concentrator productivity by eliminating the reducer gear between motor and pump and all corresponding maintenance. In addition, the cyclone pumps with variable speed can adjust their energy consumption to the optimized flow of pulp, resulting in energy savings of up to 30%.

Fig. 4. Air gap monitoring system in a gearless drive. Gearless Drives for grinding mills. Gearless Drives are well proven stateof- the-art technology for large grinding mills. 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.

Gearless Drive Mill And Crusher. Gearless mill drives Go gearless The gearless mill drive eliminates all mechanical components of a conven-tional 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 becomes...

Gearless Mill Drive Protection Improvements and Its Behavior at Minera Escondida Ltda. ... all driven by gearless mill drive (GMD) systems. Table 1 gives ... thyristor supervision cards in the power part provide an optical . signal to the XV C513 receiver cards and through the XV C512

DRA Global has installed over 120 mills, including a 23MW SAG Mill and an 18MW gearless drive mill, both world firsts. Due to well-established relationships with equipment suppliers and commercial laboratories worldwide, DRA Global's process engineering team and process designs are unrivalled in the industry and are known to add value to all ...

Traction elevators are one of the most commonly used types of elevators. They use a rope and pulley system to raise and lower the elevator cab. The weight of their cab is balanced by using a counterweight, which was first introduced in 1900. Nowadays, some elevators are using steel belts in place of steel ropes. … Continue reading "Geared vs. …

36 x 20.5 ft (11 x 6.3 m) Unused SAG Mill with 20,100 HP Gearless Drive. Manufacturer: - 10.9 x 6.2 meter shell - 20,100 HP (15,000 kW) Gearless Drive - 50 Hz ABB motor - Complete with control rooms and transformers - mill was part of a cancelled project, stored to manufacturer specifications Estim...

The drive roller of this invention utilizes a brushless D.C. motor which has a stator or armature mounted on a fixed shaft which directly drives a permanent magnet rotor mounted inside a roller tube. A variable frequency drive supplies three-phase power to a Y-connected three phase winding which is composed of three groups of two coils.

ABB Motor Gearless Mill Drive GMD System