Copper Concentrator at Mount Isa was commissioned in May 1973 with a traditional crushing-grinding circuit consisting of two-stage crushing using standard cone crushers (2.13 m diameter ...
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mill work index 11.4 kWh/t and an average RQD of 44%. RQD values of 25% resulted in a SAG mill feed size (F80) between 55 and 60 mm and throughputs of 6200 t/h. RQD values of 55% resulted in SAG mill feed size (F80) of over 70 mm and a SAG mill throughput of 5200 t/h. The Batu Hijau SAG mill specific energy was a function of point load test and ...
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I-302 I-301 INTRODUCTION The Mount Isa Copper Concentrator grinding circuit currently consists of two 32' x 16' semi-autogenous (SAG) mills, each powered by two 3.2 MW motors, followed by two 16'6" x 20' ball mills powered by 2.6 (1) MW motors. It has been described previously by Karageorgos, et al .
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Semi-autogenous (SAG) mills are widely used grinding equipment, but some ore with critical particle sizes cannot be effectively processed by SAG mills and turned into pebbles.
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Semi-autogenous grinding uses a minimal ball charge in the range of 6-15% while autogenous grinding uses ore only. SAG and AG Mills operate by lifting ore/grinding media and dropping it on the operating bed of the …
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The controller has been tested and verified in Sungun copper concentrator semi-autogenous grinding circuit. Results proved the ability of proposed supervisory control system to increase the throughput of the mill by 3.26% and decrease the specific energy consumption by 6.29% at the same time. ... As there are no impact meter, load …
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PDF | On Sep 1, 2001, V. Lawson and others published Evolution of the copper concentrator autogenous grinding practices at Mt Isa Mines Ltd | Find, read and cite all the research you need on ...
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This controller was installed, tested and verified in a copper grinding circuit. Results showed 1.8 % increase in mill throughput, 3 % decrease in power draw and …
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AG/SAG mills grind ore through impact breakage, attrition breakage, and abrasion of the ore serving as media. ... Unlike a concentrator with multiple grinding lines, conducting SAG mill maintenance shuts down an entire concentrator, so there is a tremendous focus on minimizing …
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SAG MILL BALL MILLS MILL DESIGN DATA. These projects involved SAG mills from 26 to 36 ft in diameter, with installed power in the range 9.7 to 16.8 MW using single, twin pinion, and gearless technology for drives over 16 MW. The ball mills used varied from 13.5 to 25 ft in diameter, with installed power in the range 1.85
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Yes, there is no ball mills in that grinding circuit. The p80 to the SAG mill was at about 6" while its product (flotation feed) was at 40 microns. So the answer to your question is yes, a SAG mill can be installed in an operation milling 2,000 tpd and it can be operated efficiently if the operators have the knowledge to operate it well.
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The Unki platinum concentrator in Zimbabwe was commissioned in November 2012. The milling circuit was equipped with a primary autogenous grinding (AG) mill targeting 35% to 45% passing (P35 to 45 ...
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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 ... grinding rate, internal load retention time, product fractions, specific power draw, and mill performance. Therein, load density
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copper concentrator site in order to tightly control the weight in the SAG mill to promote optimum grinding. This strategy has been demonstrated to improve mill throughput by as much as 3%. When copper prices are high, producers look to …
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Kennecott's Copperton concentrator, which we started up in 1988, two of the three grinding lines used both types of screens and on line two we used only a trommel. I've got to explain this a little bit. This flowsheet is typical of lines 1 and 3. The SAG mill has a trommel on the discharge end of it. Oversize is returned to the mill by a bucket
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Jig Concentrator; Spiral Chute; Gold Mining Equipment; Mobile Jig-Trommel; Jig-Rotary Scrubber; Vibrating Blanket Machine; Suspended Vibration Cone Concentrator; ... SAG mills grinding media includes some large and hard rocks, filled rate of 9% – 20%. SAG mill grind ores through impact, attrition, abrasion forces. In practice, …
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The milling circuit include two identical lines of single stage SAG milling. Each low aspect ratio (D/L) SAG mill has a diameter of 16 ft, length of 24 ft, installed power of 2 MW and operate in ...
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Customer: How Magoload increased SAG mill throughput and stabilized operations Customer: An iron ore concentrator in the USA Background An iron ore concentrator in the USA aimed to increase SAG mill throughput to reduce the milling hours required to meet their business plan. They operate multiple SAG mills and can rest some as …
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The Cadia Hill concentrator was commissioned in July 1998, aiming at processing 2065 t/h of monzonite ore, giving an annual processing rate of 17 Mtpa. ... Semi-autogenous grinding (SAG) mill ...
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The Chino concentrator commenced operation in 1982 as a SAG-ball mill circuit which could process 37,500 stpd of ore. Since 1982, a series of process …
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The solution: Measure. Control. And profit. BrainWave SAG mill is a unique control package using patented model-based predictive adaptive control technology. It is well …
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SAG MILL BALL MILLS MILL DESIGN DATA. These projects involved SAG mills from 26 to 36 ft in diameter, with installed power in the range 9.7 to 16.8 MW using single, twin …
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The Mount Isa Copper Concentrator grinding circuit currently consists of two 32' x 16' semi-autogenous (SAG) mills, each powered by two 3.2 MW motors, followed by two 16'6" x 20' ball mills ...
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The table below shows a comparison of different comminution flowsheets for a 4 Mt/y copper concentrator designed to process moderate competence and hardness …
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We provided engineering design and commissioning support for the significant upgrade of a mine's copper concentrator plant by replacing two semi-autogenous grinding (SAG) mills.
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The concentrator will produce approximately 65 kt/y of copper in concentrate along with gold and silver credits, with a relatively high -grade copper concentrate due to the bornite / chalcopyrite ... (BRMWi), semiautogenous-grinding (SAG) mill comminution (SMC) and - Bond abrasion (Ai) testing. Test work data is as represented in . Table 2 ...
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Additional applications of machine learning to SAG modeling put the focus on the control of SAG grinding mill circuits, predicting power consumption [90,91], one of the main concerns of plant ...
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processed at the concentrator on site with a production life of over 50 years (to be shortened to c.28 years after the construction of the second concentrator, which is ... The first concentrator was commissioned in late 2016 with a 40 ft diameter x 26 ft long semi-autogenous grinding (SAG) mill and two 28 ft diameter x 44 ft long ball mills ...
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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., …
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