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.
The grinding circuit consists of one SAG mill and three ball mills with a huge total grinding power of more than 50 MW for an average design throughput of 70'000 t/d. It was one of the first plants in the world where both SAG and ball mills are powered by gearless mill drives.
ABB gearless mill drive system will power worlds first 42 feet SAG mill Wednesday, September 1st, 2010 ABB, the leading power and automation technology group, won an order from Newmont Mining Corporation to engineer three gearless mill drive (GMD) systems to be installed at the Yanacocha Minas Conga oxide copper gold project in Peru.
largest gear driven sag mill . SAG/ball mill circuit alignment of the girth gear. Two SAG mills with rigid. INNOVATION NEWS Mills and GMDs ABB Ltd. conventional mill drive system, such as ring gear, largest volume, are solely AG mills, The world's first two 40' SAG mills are driven by GMDs rated ...
Rod Mill Design Power Draw 911 Metallurgist. Apr 28, 2018 The rod mill motor power is in horsepower at the mill pinion shaft. For difference between new and worn liners increase power draw by 6%, and . Figures in this table are generally slightly low compared to some reported. Get Price Contact Us
ABB gearless mill drives mine gold in Canada |, May 25, 2011 ABB commissioned a gearless mill drive (GMD) system that powers a 38foot semiautogenous (SAG) mill at the Canadian Malartic, Presentación de PowerPoint ABB Group. ABB Gearless Mill Drives (GMD) Mining User Conference 2017, Stockholm Slide ABB Gearless Mill Driv Why retrofits?
power and RPM, the allowable motor overload (per cent rated horsepower) for mill starting, the inertia of the mill and the charge, and the physical space available for the clutch. With the exception of singlenarrow arrangements, all clutches can be supplied with axial locking devices. .
sag mill dual pion . mill dual motor sag mills sspxsinglus. DUAL PINION SAG MILL VS SINGLE PINION SAG MILL One of the advantages girth gear driven mills have over wraparound motor mills, Get Price; mill dual motor sag mills – Grinding Mill China. Sag Mills: Used Mining Equipment for Sale, Used Sag Mills ...
AG/SAG mills in the data base are up to 40ft in diameter and ball mills are up to 26ft in diameter. The measured gross power draws from these mills are plotted against the model predictions in Figure 1. As indicated by this data base the accuracy of the model (1 standard deviation) is %.
May 01, 2017· A laboratoryscale ball mill with an internal diameter of 573 mm and axial length of 160 mm is used in this components of the experimental setup are shown in Fig. rated power of the motor is kW and the rated speed is 1400 reducer is used to decrease the speed of the shaft, and the reduction ratio is 23; thus, the rotation speed of the shaft is reduced to rpm ...
is lined with mill liners protecting the steel body of the mill and incorporating mill lifters which help to raise the content of the mill to greater heights before it drops and cascades down [36]. There are three types of grinding media that are commonly used in ball mills: • steel and other metal balls;
A pinion, with integral shaft, weighs 10,000 to 20,000 lb. The gears range from 5 to 15ft pitch diameter and 2 to 5ft face width. A typical gear and shaft assembly weighs 80,000 to 190,000 lb.
ring motor for ballmill gearless ring motor for sag mill principles, Mill Drives: Girth Gears at 18,000 HP SAG mill Principle of SAG Mill ... Get Price >> Ring gear drives huge grinding mill | Machine Design
Sag Mill 40' x 22' EGL, MW (31,500 HP). Gearless Drive. SAG Milling in Australia Revised Submission. based on the downtime associated with mill gear alignment and maintenance ... SAG Mill T80 um 2880 1650 SAG Power from F80 to T80 kWh ... Hill Sag Mill Circuit, in ... Gears And Pinion For Ball Mill | Crusher Mills, Cone Crusher ...
Following the SAG mill will be two 9,000hp ball mills, each one 20ft in diam. and 331/2ft long, that do the finish to analyze gear failures. EDM speeds cutting of precision gears. Rightangle gear drives ZeroMax Essentials of Mechanical Systems. Read more
SAG mills are characterized by their large diameter and short length. The inside of the mill is lined with lifting plates to lift the material inside up and around the inside of the mill, where it then falls off the plates and falls back down.
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.
stage ball mills, rod mills or AG/SAG mills when calculating power according to the Bond Third Theory method. Rod mill and AG/SAG mill products are similar and tend to be not as steep as a slope when plotted on loglog paper. This is because the particle size distribution (PSD), these mills. Sales Online
With successful operation of 2 x (Phu Kham, Laos) and three 2 x 7MW units under manufacture (Pascu Lama) and a further 40 projects worldwide, energy efficient Hyper Synchronous SER drives are now mature and ready for use on 2 X 10MW dual drive mills. Speed variation required is in the range of +/ 15% of synchronous motor speeds.
Such motors are powerful enough to rotate a SAG (semiautogenous) mill at A mill of this size can process 130,000 tonnes of copper ore per day, producing 163 tonnes of pure copper when smelted. Power losses in a 16MW GMD system are about 45% lower than those of a conventional 16MW fixedspeed mill drive system.
sag mill design pdf Liner design needs to respond to the process aspects of test and study work showed that a single line 42 ft SAG mill circuit gave the. sag mill grate design SAG mill design, GMD design and the associated component Words: SAG mill, design, optimum conditions, grinding, pilot testing.