sag dimension mills

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DEM Simulation of Mill Charge in 3D via GPU Computing

Discrete Element Method simulation of charge motion in ball, SAG and autogenous mills has become a standard for lifter design, power draft evaluation, etc. Both two-dimensional and three-dimensional codes are being used. The two-dimensional code dominates the user market since the code completes a simulation in one or two hours.

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FAG Rolling Bearings in Rolling Mills

assistance. The dimensions and performance data of rolling bearings for rolling mills are given in Catalogue GL1. A selection of publications covering rolling mill bearing arrangements and fundamental subjects in bearing arrangement engineering, such as dimensioning, mounting and dismounting, lubrication and maintenance is given in the list

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What is the difference between a SAG mill and ball mill?

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%.[6][7] The largest SAG mill is 42′ (12.8m) in diameter, powered by a 28 MW (38,000 HP) motor.[8]

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COMMINUTION

• Mill dimension • Mill throughput • Ball sizes and charges • Flowsheet configurations • SAG classification • SAG grate (and pebble port) configuration ... SAG mill feed, grate size, open area, classification size, ball diameter or ball charge, total mill load, mill speed, etc. can be investigated at pilot plant scale. All

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Using DEM to model ore breakage within a pilot scale SAG mill

The best accepted method for design of autogenous and semi-autogenous (AG/SAG) mills is to carry out pilot scale test work using a 1.8. m diameter by 0.6 m long pilot scale test mill.. The load in such a mill typically contains 250,000–450,000 particles larger than 6 mm, allowing correct representation of more than 90% of the charge in …

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ERSEL Ağır Makine San. ve Tic. A.Ş.

SAG Mill Dimensions: 5000 x 2500 mm. Plant Location: Gedabey - AZERBAIJAN. CONTACT. ERSEL AĞIR MAKİNE SANAYİ ve TİCARET A.Ş. Phone: +90 262 658 13 40 / Fax: +90 262 658 05 27 / E-mail: info@ersel. PAGES. References. News. Contact. DOWNLOAD CATALOG.

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Mill drive selection for semiautogenous grinding mills

Early SAG mill designs using gear drives were limited in the amount of power that could be applied to the pin-ions, 3.7 MPa (5000 hp). The exception to this design was the Hibbing …

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Trommel Frames and Screen Media | FL

To ensure rapid delivery and streamline inventory management, our screening media is available in two standard sizes and in a number of thickness combinations. Our modular screen media panel sizes are 657 mm × 400 mm (25.86 in × 15.75 in) and 726 mm × 400 mm (26.75 in × 28.58 in). These standard dimensions allow us to supply your media …

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INNOVATION NEWS Mills and GMDs

reliable drive system for SAG mills. Early SAG mills had a diameter of about 32', later increasing to 34, 36, 38 and 40'. At the same time the mill volume also increased. Typically a ... of Toromocho's 28 MW SAG mill GMD has transport dimensions of SOME 14.8 x 6.1 x 3.4 m with a weight of 130 t. It soon becomes apparent why the gearless ...

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SAG vs. AG Mills: Understanding the Key Differences

SAG mills, or Semi-Autogenous Grinding mills, use a combination of steel balls and rock particles to grind ore. They are larger in size and are capable of grinding larger quantities …

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Calculate and Select Ball Mill Ball Size for Optimum Grinding

Based on his work, this formula can be derived for ball diameter sizing and selection: Dm <= 6 (log dk) * d^0.5 where D m = the diameter of the single-sized balls in mm.d = the diameter of the largest chunks of ore in the mill feed in mm. dk = the P90 or fineness of the finished product in microns (um)with this the finished product is ...

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(PDF) Autogenous and Semi-Autogenous Mills, 2015 …

Mill designs are of f the shelf tod ay for a SAG mill of up to 28 MW followed by t wo Ball Mills o f up to 24 MW. It is possible to have a single processing line c apable of handling over 200,000 ...

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AG

Product Size: All passing 6 mesh with 80% passing 20 mesh. Net power from pilot plant: 16.5 KWH/ST. Mill, gear and pinion friction multiplier: 1.025. Mill Power required at pinionshaft = (240 x 16.5 x 1.025) ÷ 0.746 = 5440 Hp. Speed reducer efficiency: 98%. 5440 Hp ÷ 0.98 = 5550 HP (required minimum motor output power).

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Optimal Speed Control for a Semi-Autogenous Mill Based on

Based on the detailed analysis of the grinding process of the SAG mill, a three-dimensional simplified model of the SAG mill roller with the specification of Φ 6 × 4 m was established by using software UGNX8.0. The model was then imported into the discrete element software EDEM, and a particle factory was established approaching the roof ...

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Semi-autogenous grinding (SAG) mill liner design …

For large mills, using 125 to 140 mm (5 to 5-1/2 in.) feed ball size, conventional new lifter-liner dimensions are around 300 to 350 mm (12 to 14 in.) overall height above the shell, …

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Autogenous and Semi-Autogenous Mills

The SAG mill had a 6–8% ball charge and the power consumption was 8 kWh/t, which agreed well with the expected value. 9.6. Problems. 9.1. In an 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.

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Operation Analysis of a SAG Mill under Different Conditions …

the mill. First, we built a three-dimensional model of the SAG mill. Then, we used the breakage energy method to set up two sets of simulation schemes to simulate the inﬂuence of the mill speed, the ﬁll level ratio, and the steel ball ratio on the SAG mill. Finally, through statistics and analysis of

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A REVIEW OF SAG CIRCUITS CLOSED WITH …

AG/SAG mills and a summary of the installations of AG/SAG in Australia were given by Putland (2005). DEPARTMENT OF MINING ENGINEERING ... the equipment dimensions and ore type.

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GROSS POWER CALCULATOR

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 ... – this covers mill dimensions, speed of rotation, whether the mill has cone ends and type of discharge mechanism. Dimensions can be input in either metric or imperial units by the use of the drop-

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(PDF) Toward a Simple Approach Determining Single …

African gold mining industry with 74 ROM ball mills installations operating in 23 plants with dimensions ... type of SAG mill popular in North America and for the large L/D type used in South ...

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Used Ball, Sag, Pebble Mills for Sale | Chemical | Surplus Record

Search through large online inventory of used Ball mills, Sag mills, Pebble Mills, grinder mills for Chemical and Processing industry. All available for shipping today! Paul O. Abbe, Allis-Chalmers, Fl, and more! ... used Netzsch Pebble Mill internal dimensions: 80" diameter x 72" long chamber Looks to be unused Serial number 20197 ...

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Numerical prediction of wear in SAG mills based on DEM …

The DEM and erosion model SIEM were used to predict wear within the SAG mill. The simulation results of the standard case (the rotation speed is 10.5 rpm; the angle of the lifter face is 14°; the lifter height is 152 mm) are quantitively validated against the corresponding experimental data [6], and the effects of the rotation speed and lifter ...

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3-D liner wear profile measurement and analysis in industrial SAG mills

Application of the proposed method in a 9.75×4.88m SAG mill indicated that the liner wear profile along the liner length is non-uniform and the highest wear occurs between 1.25m and 2.75m of the ...

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Machine Learning and Deep Learning Methods in Mining

Semi-autogenous grinding mills play a critical role in the processing stage of many mining operations. They are also one of the most intensive energy consumers of the entire process. Current forecasting techniques of energy consumption base their inferences on feeding ore mineralogical features, SAG dimensions, and operational variables. …

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Design of the 40 foot SAG Mill Installed at the Cadia Gold …

SAG Mill Dimensions: The SAG mill was designed for monzonite ore, with allowance in the mine schedule for reduced throughput when treating the harder volcanics. The latter forms -8% of the orebody and have the potential to reduce7 throughput by up to 30% if treated by themselves, while maintaining the same grinding circuit product size. Speed ...

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Whitepaper Mill Optimisation

SAG mill circuit No. of mills # 1 SAG mill motor power installed kW 28,000 Motor type Gearless Mill manufacture FL SAG mill dimensions diameter length 40 ft (12,192 m) 26 ft (7,924 m) Mill direction Bi-directional Mill speed – range % critical 0-80 Mill speed – nominal % critical 76 SAG mill specific energy kWh/t 6.6 Grinding media Mm 125

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Hydrostatic Trunnion Bearing Design

Hydrostatic Trunnion Bearing Design. Hydrostatic trunnion bearings were recently provided on large Semi-Autogenous Grinding (SAG) mills driven by wraparound motors assembled on the head to shell flanges. A conventional SAG mill would have a ring gear driven through one or two pinions. The effects of the magnetic air gap forces from …

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Comparison of DEM and experiment for a scale model SAG mill

The experimental mill had an internal diameter of 592 mm and a depth of 200 mm. It was a 1:10 scale model of the Alcoa SAG mill at Pinjarra. C-Noranda lifters were used with a lifter plate width of 42 mm and a height of 18 mm. In all, 44 Noranda lifters are arranged circumferentially around the mill interior.

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Sag Mill Sizing | PDF | Mill (Grinding) | Industrial Processes

Production Rate Rod Mill Work Index Ball Mill Work Index Feed to SAG Mill Product from SAG Mill SAG Mill Pinion Power SAG Mill Motor Size SAG Mill Size (Diameter) (Length) 181.2 tonnes/hour 8.6 metric 12.2 metric 80% passing 150 mm 80% passing 1000 m 1155 kW 1268 kW (1700 HP) 5.791 m (19 ft) 2.286 m (7.5 ft)

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Developments in the understanding of South African style SAG mills

The mill was converted from a ball mill duty to SAG mill, so has a low aspect ratio (diameter/length) which changes its operation relative to typical high aspect mills (Powell, Morrell and ...

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