A SAG (Semi-Autogenous Grinding) mill is a giant rotating cylinder filled with grinding media and the ore being reduced. As the mill rotates, the grinding media lifts and the impact crushes the feed material. SAG mill control refers to the practice of managing the mill load, which is the amount of material inside the mill at any given time.
The Cadia Hill deposit was mined out in 2012 and the open pit is currently being used for tailings backfill. The Cadia Hill deposit was about 900 m long. ... (HPGR) unit treating screen undersize prior to the SAG mill; • Primary open circuit milling in a single 40-ft SAG mill fitted with a 20 MW motor. The motor will be upgraded to 22 MW.
The design of the 12m diameter SAG mill installed at the Cadia Hill Mine in New South Wales followed after two years of extensive laboratory and pilot plant testwork. The testwork showed the Cadia ores to be hard and competent necessitating the use of both a variable speed SAG mill drive and pebble crushing.
The remedial design of the stator of the gearless mill drive (GMD) of the 40 ft SAG mill at Cadia Hill was the project that defined the success of EAnD and the careers of its two engineering managers, Bill Lai and Chris Meimaris. ... What is worse though is that we can definitely say with hindsight that there was no bullet to dodge at Cadia ...
Modular SAG mill discharge trommel for maintenance flexibility and performance. The …
TECHNOLOGY Cadia SAG mill back in operation. Following repairs and a period of operational testing, the concentrator 1 semi-autogenous grinding (SAG) mill at Newcrest Mining's Cadia gold operation in New South …
The evolution of the Cadia 40-foot SAG mill to treat the Cadia East orebody: a case …
The Ridgeway Concentrator at Newcrest Cadia was commissioned in 2002 as an ABC circuit to treat the ore from the Ridgeway sublevel cave (SLC) at around 5 MTPA. Consisting of a single pinion 32' autonomous grinding (AG) mill and a single pinion 7 MW ball mill, it was a much smaller plant than the adjacent Cadia Hill Concentrator. …
A period ofoperational optimisation followed which by 2018 had successfully shifted the Concentrator 1 circuit throughputconstraint to the 40-foot (ft) 20-megawatt (MW) SAG mill. The SAG mill operated to 97% of installed motorpower, for an annual throughput of 22.5 million tonnes per annum (Mt/a) in the 2019 fiscal year.In 2019 the site ...
SAG mill liner development draws primarily on practical experience from SAG milling operations supported by computer-based modeling of charge motion in SAG mills and on established good design practice. Liner design needs to respond to the process aspects of mill liner action that are critical to good SAG mill performance, i.e., …
Optimisation of the Cadia Hill SAG mill circuit. S Hart, W Valery, B Clements, M Reed, M Song, R Dunne. SAG Conference, 2001. 48: ... Design of the 40 foot diameter SAG mill installed at the Cadia Gold Copper Mine. R Dunne, S Morrell, G Lane, W Valery, S Hart. SAG2001, Vancouver, BC, Canada, 2001. 19:
Commissioning of the Cadia Hill SAG mill Circuit followed a project Research and Development exercise in July 1998. The SAG mill quickly reached 90% of the design rate but it became evident that the … Expand. 24. PDF. Save. Predicting charge motion, power draw, segregation and wear in ball mills using discrete element methods.
T. Waters, A. Rice, J. Seppelt, J. Bubnich, B. Akerstrom. 14th AusIMM Mill Operators' Conference 2018, 29-31 August, Brisbane. ABSTRACT. The Concentrator 1 plant at Cadia transitioned from Cadia Hill open pit to the Cadia East block cave ore body in 2013.
Optimisation of the Cadia Hill SAG mill circuit. Conference Paper. Full-text available. Sep 2001; S. Hart; Walter Valery; B. Clements; R. Dunne; View. Tower fine milling experience at Mount Isa Mines.
Hart et al (2001) reported a range of strategies for SAG mill capacity debottlenecking and improving overall performance of Cadia Hill comminution circuit -one of which strategies was Mine-to-Mill ...
This paper examines the operation of the 40' SAG mill in its new configuration in the …
A rock breakage test has been developed that can help predict autogenous (AG) and semi-autogenous (SAG) mill performance in situations where only limited quantities of rock samples are available. The test was originally developed to make use of quartered (slivered) core but whole core, half core and lump material can also be used. …
Andacollo throughput during ramp-up. Reproduced from Gonzalez (2010). Mt Milligan Mt Milligan (Mills et al., 2009) has a low grade (0.20% Cu and 0.39 g/t Au) and competent ore.
The simulation model on which the Cadia Hill SAG mill was based on surveyed data from two pilot SAG (12% balls) run with recycle crushing. These were part of the second of two pilot campaigns and ...
1605Huckleberry SAG feed 2012 Huckleberry 18 2.76 31.1 1606Huckleberry HPGR productHuckleberry 15.4 1607Cadia Hill Cadia 17.5 20 30 35 0.33 1608Ridgeway Cadia 18.7 21 30 42 0.43 1609Cadia East Cadia 20.3 29 30 29.7 0.2 164353392-2 Çöpler 13 2.58 84.6 76.7 0.26 3
The design of the 12m diameter SAG mill installed at the Cadia Hill Mine in New South Wales followed after two years of extensive laboratory and pilot plant testwork. The testwork showed the Cadia ...
The design of the 12 m diameter SAG mill installed at the Cadia Hill Mine in New South Wales followed after two years of extensive laboratory and pilot plant testwork. The testwork showed the Cadia ores to be hard and competent necessitating the use of both a variable speed SAG mill drive and pebble crushing. The grinding power requirements for the …
• Cadia SAG mill data (Key drivers of wear life) – Ore composition – Volume / mass of steel – Hypothesis –'Liner shape defines the wear rate profile and the resulting life of liners' et al –Applying mill control to account for liner wear on the Cadia 40ft mill, SAG 2015
Optimisation of the Cadia Hill SAG mill circuit. S. Hart W. Valery B. Clements M. Reed M. Song R. Dunne. Engineering, Geology. 2001; Commissioning of the Cadia Hill SAG mill Circuit followed a project Research and Development exercise in July 1998. The SAG mill quickly reached 90% of the design rate but it became evident that the …
The design of the 40-foot diameter SAG mill installed at the Cadia Gold Mine, New South Wales Australia, followed after two years of extensive laboratory and pilot plant testwork. This showed the Cadia ores to be hard and competent necessitating the use of both a variable speed mill drive and pebble crushing. The grinding power requirements were …
The evolution of the Cadia 40' SAG mill to treat the Cadia East orebody – a case study of incremental change leading to operational stability Watch . Glencore Mount Isa lead zinc flotation circuit – experiences from the implementation of model predictive control Watch .
Cadia works closely with local community groups and government agencies to provide ongoing infrastructure and support in the Orange, Blayney and Cabonne local government areas. Newcrest undertakes a range of environmental reporting and monitoring activities to ensure that Cadia maintains a safe environment for employees, operating and ...
The site also comprises the Cadia Hill Pit Tailings Storage Facility and the Ridgeway underground mine, which is currently in care and maintenance. We produce gold doré bars from a gravity circuit and gold-rich copper concentrates from a flotation circuit. The concentrates are piped to a dewatering plant at nearby Blayney and sent by rail to ...
Figure 2 shows the throughput versus SAG mill load for two different liner designs and operating loads, and the power draw versus SAG mill load for the Cadia SAG mill (Hart et al., 2001). Both ...
1.. IntroductionIt is generally recognised that the most accurate means for predicting the specific energy of an autogenous (AG)/semi-autogenous (SAG) mill circuit is to pilot the circuit using a 6 ′ × 2 ′ mill (Mosher and Bigg, 2001).However, one of the major drawbacks of this approach is that a relatively large sample is required to do so.
Mines (WA) 36ft SAG mill the number of Outer Head Liners was reduced from 36 to 18 pieces and in doing so reduced the time to replace them by 9 hours at a cost downtime saving of about U$25,000 per ... This was applied to Cadia Hill Gold Mine through evaluation of their existing wear profile
The Cadia Mine again leads process design with the first truly hybrid HPGR-SAG circuit upgrading the circuit that had the world's first forty foot SAG Mill. The hybrid approach addresses the risk of shifting to block cave with higher throughput, of higher competence, and uncertain ROM size but expected depletion of fines. During commissioning, …