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Copper Mountain’s concentrator was commissioned in May 2011. The circuit consists of a 34’ x 20’ EGL SAG mill, a Raptor 900 pebble crusher and two 24’ x 39’6” ball mills. Each mill is equipped with a 2 x 8500 HP dual pinion drive system. The plant was designed to process 1585 mtph of SAG feed.
The two SAG mills in the Mission South Mill each have two 3,000 horsepower electric motors. They can rotate in either direction which helps even out the wear on the steel liners inside the mill. When the rocks are about 3/8-inch or smaller, they are fed as a slurry into the two ball mills.
ensure that its 34-foot fixed-speed SAG mill is properly loaded. The copper-molybdenum operation uses a ‘total precrush’ strategy, in which ore en - tering the mill has already been reduced to a size that is much smaller than typical for SAG mill feeds. The benefit is that it allows the mill …
The concentrator has a milling rate of 70,000t/d and is the largest single-circuit SAG-milling operation in the world. The SAG mill provides feed for ball milling to produce flotation feed, with the ball mills featuring variable-speed drives to enable the mills to handle the range of different ore hardness found at Antamina.
AG Mill and SAG Mill. Feeding size: ≤25mm. Capacity: 0.65-615t/h. Output size: 0.074-0.89mm. Applications: It is commonly used in the mineral processing industry and ferrous and non-ferrous metal ore and nonmetal ore processing plants. It can also be used in cement plant, refractory plant, fertilizer plant and smelting plant.
9.1. In a SAG mill the dimensions of the mill were 9.75 m 3.5 m and the specific gravities of the mineral and that of the balls charged were 4.1 and 7.9 respectively. The mill was rotated at 75% of its critical speed when 8 % of the mill volume was charged with grinding balls. Estimate: 1. The mill …
water usage. The crushed ore is transferred to a semiautogenous (SAG) mill or ball mill where the ore is further reduced in size. Water is added to the ball mill, in which a slurry that usually contains from about 20 to 55 percent solids is produced (Singh, 2010; International Mining, 2011) (see fig. 2). The
Hussey manufactures consistently high-quality coppers and copper-nickel alloys for a comprehensive range of industries and applications. ELECTRICAL. Furnished in strip, plate, bar, and coil form, Hussey high-performance coppers exhibit uniform composition and consistent physical, fabrication, and mechanical properties, time after time.
The three 28 megawatt SAG mills and four 16.5 megawatt ball mills installed at Cobre Panama are the largest installed anywhere in the world, except for Sentinel. Cobre Panama’s eighth mill came on line in mid-December 2019, providing additional capacity on the third milling train.
Aug 19, 2019 Within comminution circuits, High Pressure Grinding Rolls (HPGR) are increasingly replacing conventional SAG, rod and ball mills for hard rock reduction – owing to their substantially lower energy consumption and potential for significant total cost of ownership reduction. Not only do they require as much as 40% less energy than traditional reduction methods, but their wearable …
445 PAPER 28 Evolution of SAG Mill Process Control at the Xstrata Nickel Raglan Operation Erik Bartsch1, Chief Engineer Guy Comeau2, Senior Metallurgist Colin Hardie3, Former Chief Metallurgist 1 Process Control Group, Xstrata Process Support 6 Edison Rd, Falconbridge, Ontario
The aim of this research work was to investigate on the ball filling estimation of Miduk semi-autogenous (SAG) Mill via an utilized method. Miduk copper concentrator is located in Kerman Province, Iran, and its size reduction stage includes one gyratory crusher which feeds one SAG mill (9.75 dia.(m)*3.88 length(m)) following two parallel ball mills (5dia.(m)*7lenght(m)).
Single stage SAG Mills are very beneficial in reducing CAPEX for plants with a staged throughput approach. When future tonnage is to be increased, the SAG Mill can feed downstream ball milling to boost capacity. Fuller-Traylor SAG/AG Mills range in size from 4.3m through 12.2m in diameter with powers as high as 28,000 kW.
SAG Mill Wear Profiles Sarcheshmeh Liner Life Abstract Liner design has become an increasingly more important tool for the AG/SAG mill performance optimization. The Sarcheshmeh copper complex concentration plant uses a SAG mill lined with 48 rows of Hi-Low type liners. Because of …
Principle of SAG Mill operation. SAG is an acronym for semi-autogenous grinding. SAG mills are autogenous mills that also use grinding balls like a ball mill. A SAG mill is usually a primary or first stage grinder. SAG mills use a ball charge of 8 to 21%. The largest SAG mill is 42′ (12.8m) in diameter, powered by a 28 MW (38,000 HP ...
PRODUCT: SAG MILL ACE Antofagasta PLC’s Minera Los Pelambres has one of the largest open pit mines in Chile and produces approxi-mately 320,000 tonnes of copper concentrate annually. When copper prices are high, producers look to increase production by eliminating process bottlenecks. At Minera Los Pelambres, as at many mines, SAG mill throughput
MACHINING COPPER BERYLLIUM What design challenges are you facing today? A comprehensive guide to the physical and mechanical properties, material selection ... or mill hardened tempers. The age hardenable tempers (e.g., A, H and H) require heat treatment to produce the alloy’s maximum strength and conductivity. The mill
Around the globe. Alongside our quality-conscious staff, Alltech Coppens works with an extensive network of specialized agents and distributors to ensure high product quality. We export our fish feed to more than sixty countries worldwide.
SAG mill control fundamentally means managing the load in the mill by adjusting the feed rate of ore to the mill and/or manipulating the rotational speed of the mill. The best way to measure load is to mount the mill on load cells. The load cells are calibrated to measure the total weight of water, grinding media (balls) and ore in the mill ...
Copper Industry Flow Sheet. Home. Industry Flowsheet. Minerals Processing - Copper.
AG Mill, Sag Mill, Autogenous Mill manufacturer / supplier in China, offering 1000 Tph Gold AG Mill & Copper Sag Mill, Ball Mill Parts Steel Ball, Ball Mill Bevel Pinion Gear and Rotary Kiln Bevel Pinion Gear and Gear Box Reducer Bevel Pinion Gear and so on.
SAG mill optimization and increasing throughput at the Phu Kham Copper-Gold Operation, 14th Mill Operators Conference, AUSIMM, Brisbane, Australia (View paper here) Chandramohan, R., Lane, G., Pyle, M. and R.Whittering. (2019). SAG Mill Liner Selection to Maximize Productivity, Procemin-Geomet 2019, Santiago, Chile. (View paper here)
Gearless mill drive (GMD) technology has further expanded the use of large SAG milling allowing Metso Outotec to produce the world's largest SAG mill of 42’ in diameter drawing power at 28 MW. Today, Metso Outotec is the world leading supplier of gearless SAG mills operating globally.
Antamina Compania Minera Antamina S.A. Peru Project: One SAG Mill and 3 Ball Mill Drive Systems Capacity: SAG Mill 1000 t/h 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
Metso has been selected to design and supply a 42 x 25 ft, 28 MW gearless SAG mill, plus two 26 x 42 ft, 15.6-MW ball mills and two VTM-1500-WB Vertimills for Newmont Mining Corp.’s Yanacocha Conga copper-gold project in Peru. The 42-ft-diam SAG mill is the world’s largest and is the first of its kind. The Conga project is at its feasibility stage, and with the engineering and release for ...
Dec 07, 2018 by a sample collected from the SAG mill feed belt at the New Afton mine, also in British Columbia and about 400 km north of Copper Mountain. Copper Mountain Sample The Copper Mountain’s samples that consists of three SAG belt cuts at three feed belt locations and one geometallurgy-composite sample were tested, providing the results in Table 1.
The mills were selected on the basis of two milling trains, each comprising the largest SAG and ball mills currently proven at other operations, at the time of design. On that basis, a 28 MW SAG mill (internal diameter of 12.19 m (40 ft)) and a 22 MW ball mill (8.53 m internal diameter (28 ft)) were selected for each milling train.
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The Copper Mountain SAG mill is 10363 mm [34 feet] in diameter and 6096 mm [20 feet] long. It is a grate discharge mill with an inside diameter of 10363 mm [34 feet] and a grinding length of 5334 mm [17.5 feet]. The mill is driven by two 8,500 horsepower ABB motors. Figure 2 - The 34’ x 20’ SAG mill
Nov 26, 2019 The biggest characteristic of the sag mill is that the crushing ratio is large. The particle size of the materials to be ground is 300 ~ 400mm, sometimes even larger, and the minimum particle size of the materials to be discharged can reach 0.1 mm. The calculation shows that the crushing ratio can reach 3000 ~ 4000, while the ball mill’s ...
Jun 06, 2016 SAG Mill Design and Specification . The Kidston plant was designed to process 7500 tpd fresh ore of average hardness; but to optimise profit during the first two years of operation when softer oxide ore will be treated, the process equipment was sized to handle a throughput of up to 14 000 tpd. Some of the equipment, therefore, will become ...
Oct 12, 2017 In the mining, some precious metals found are like gold, silver, nickel, and copper etc. Ball Mills: Ball mill is a fine grinder. A horizontal or vertical rotating cylinder which is filled partially with the balls of ceramics, small rocks and balls made from stainless steel. The ball charge of a SAG mill is about 29% to 30%. By friction and ...