sag mill design calculations

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sag mill design calculations

sag mill design calculations - audolab.fr

sag mill design calculations. AG - Autogenous SAG Semi-Autogenous Mill Design . 17/4/2018 Obviously, the SAG mill is consuming more and the ball mill less power than was predicted by the empirical method, but the overall total is 99.5% SAG Mill Grinding Circuit Design - 911metallurgist,6/6/2016 Based on experience, mill-liner designs have moved ...

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Modelling SAG milling power and specific energy ...

mill diameter, mill length, grates openings, and pebble ports size; the power equation is also function of all the operational variables selected for this study. The applied force is a function of the mass inside the mill and it is composed of balls, ore and water. The ball charge is a function of the bulk fraction of the SAG mill volume (Jb)

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Milling Circuit Calculations | Request PDF

A rock breakage test has been developed that can help predict autogenous (AG) and semi-autogenous (SAG) mill performance in situations where only …

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(PDF) Sag-tension Calculations A Tutorial Developed for ...

Sag-tension Calculations A Tutorial Developed for the IEEE TP&C Line Design Subcommittee . × Close Log In. Log in with Facebook Log in with Google. or. Email. Password. Remember me on this computer. or reset password. Enter the email address you signed up with and we'll email you a reset link. ...

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(PDF) Sag-tension Calculations A Tutorial Developed for ...

Sag-tension Calculations A Tutorial Developed for the IEEE TP&C Line Design Subcommittee . × Close Log In. Log in with Facebook Log in with Google. or. Email. Password. Remember me on this computer. or reset password. Enter the email address you …

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A Method of C alculating Autogenous/ Semi-Autogenous ...

SAG mill can operate at a reasonable ef ciency if the ﬁ nal ﬁ ... The ﬁ nal DB Consulting (DBC) AG/SAG SE calculation is based on an AG/SAG circuit without a pebble crusher. ... an inefﬁ ciency value in the region of 1.25 because the design 80 per cent passing value is not achieved. The ball mill usually

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Geomagic Wrap - Volume Calculation SAG Mill - YouTube

This video shows how to obtain enclose Volume for a SAG Mill using Geomagic Wrap in aroud 8 minutes. It shows Import of FARO Focus FLS file 1/1 (full point c...

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TECHNICAL NOTES 8 GRINDING R. P. King

8-3 Centrifugal force outward Fc mp& 2 Dm 2 (8.1) & is the angular velocity, mp is the mass of any particle (media or charge) in the mill and Dm is the diameter of the mill inside the liners. Gravitational force Fg mpg (8.2) The particle will remain …

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What's the Difference Between SAG Mill and Ball Mill ...

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 ...

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Lifeline design: calculation of the tensions

moment, but sometimes leads to simpler calculations and permits a deeper physical insight. The elastic potential energy is 122 2 23 ( ) ( ) ( ) 1 2 3 22. e 2 kkk U l l l ' ' ' (7 ) The potential energy function of the external loads is: U F f l F ( ), 1 (8 ) where f is the sag: 22 23 1, 2 f l …

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Example Calculations - Montana

MDT Road Design Manual Appendix K – Example Calculations 4. Prior to finalizing the crest curve length, we'll determine the needed length for the sag curve based on SSD: Calculate the minimum length for the sag curve using Equation 4.4-7:

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YANACOCHA GOLD SINGLE STAGE SAG MILL DESIGN, …

SAG MILL Availability (%) 92 Design throughput (t/h) 620 Circuit P80 (um) 75 Pebbles production rate (t/h) 186 Circulating Load excl. Pebbles (%) 275 Mill installed power (kW) 16,500

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Comminution Circuit Design for the Constancia Project

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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SAG Mill Grinding Circuit Design - 911metallurgist

Traditionally, many engineers approached SAG circuit design as a division of the total power between the SAG circuit and ball-mill circuit, often at …

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OSTI.GOV Technical Report: Improving Energy Efficiency Via ...

Depending on the mill size the SAG mills draws between 2 MW and 17 MW. The product from the SAG mill is further reduced in size using pebble crushers and ball mills. Hence, typical gold or copper ore requires between 2.0 and 7.5 kWh per ton of energy to reduce the particle size. Considering a typical mining operation processes 10,000 to 100,000 ...

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SAGMILLING .:. Home

Sagmilling is home to a collection of both free and subscription-based calculation tools to aid metallurgical process engineers perform comminution calculations. Grinding circuit design tools, including for SAG mill-ball mill circuits, and geometallurgy energy models are …

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Geomagic Design X - Volume Calculation SAG Mill - …

This video shows how to calculate Volume of a SAG Mill using GEOMAGIC DESIGN X in under 6 minutes from start to finish.Alignment: Local Based on Pick Point &...

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SAG mill wear optimization using DEM simulation - Rocky DEM

Video 1: Mill Showing Surface Wear Modification Case scenario. Consider a large SAG mill with a diameter of 10.97 m, as shown in Figure 1a. The mill has a high-definition line design with alternating lines of high and low elevators (Figure 1b). The mill processes rocks from 200 mm to 300 mm, using 350 mm steel balls as the grinding medium.

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sag mills design

AG Autogenous amp SAG Semi Autogenous Mill Design Calculations. Apr 18 2018 Mill Sizing After laboratory and pilot plant testing confirm the feasibility of autogenous or semi autogenous grinding it can be used to establish . The Selection Design and Application of …

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SAGMILLING .:. Articles

Blank spreadsheet that is pre-populated with the field names needed to import laboratory test results into the SAGMILLING circuit model testwork database (subscription required). Enter your test results, one per row, arranged into the columns indicated. To import into your testwork database, copy the block of cells starting with the top row ...

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Publications | Starkey and Associates Inc.

DESIGN SAG MILL PRODUCTION WHEN YOU NEED IT MOST: IN DAY 1 AND YEAR 1 by J.H. Starkey, Michel Brissette, Kingsley Larbi and Dave Meadows. Presented at Procemin 2013 in Santiago, Chile, October 2013. 24. SAGDESIGN – USING OPEN TECHNOLOGY FOR MILL DESIGN AND PERFORMANCE ASSESSMENTS by J.H. Starkey …

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CMD Consulting uses Rocky DEM power calculations to ...

SAG mill design CDM Consulting used to test Rocky DEM power draw Empirical Model Rocky DEM Model Figure 1 - Morrell C-model for mill power draw Rocky calculations for power draw were shown to accurately replicate Morrell's C-model for power draw, an increasingly critical component in mill design validation

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SAGMILLING .:. tools

SAGMILLING .:. tools. Mill Critical Speed Calculation. Estimates the critical speed of a grinding mill of a given diameter given the mill inside diameter and liner thickness. If given a measured mill rotation (RPM), then the mill`s fraction …

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AG - Autogenous & SAG Semi-Autogenous Mill Design …

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 …

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foundation design criteria for sag mill and ball mill

SINGLE STAGE SAG/AG MILLING DESIGN - Orway. 4 High ball charge SAG mill or ROM Ball mill (15 to 25% ball charge) Low competency ore Hidden Valley, Nzema, Sepon, UG2 ores (South Africa), Yanacocha 5 Low ball charge, high speed SAG mill (4% ball charge, 90% Nc) A cross between AG and SAG for average competency, abrasive ores.

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SAG Mill | Autogenous and Semi-Autogenous Mills | FL

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.

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power based sag mill design calculations

power based sag mill design calculations. power based sag mill design calculations. Ball Mill Design/Power Calculation The basic parameters used in ball mill design (power calculations), rod mill or any tumbling mill sizing are; material to be ground, characteristics, Bond Work Index, bulk density, specific density, desired mill tonnage capacity DTPH, operating % solids or pulp …

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t10 (%) Weighted Fit 63 x 53 - SMC Testing

parameters used by the AG/SAG mill model in JKSimMet which permits prediction of the product size distribution and the power draw of the AG/SAG mill for a given feed size distribution and feed rate. In . 0 10 20 30 40 50 60 70 80 90 100 0 0.5 1 1.5 2 2.5 3 3.5 4 t10 (%) Ecs (kWh/t) Weighted Fit 63 x 53 45 x 37.5 31.5 x 26.5 22.4 x 19 16 x 13.2

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Grinding Mill Computer Model

3.3 Ball Mill Design The ball mill designs also follow the Bond/Rowlings method with comparison with other methods. Again the method of use is the same 3.4 SAG/BM Combined design This is the combined model of the SAG and BM models. The difference is that a provision in the BM model allows for the fact that finished product is in the BM feed.

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Comparison of Ore Hardness Measurements for Grinding …

Grinding Mill Design for the Tenke Project John Starkey1, Principal Consulting Engineer ... but for grinding calculations where the ore is in continuous contact with water, the pycnometer, ASTM D 854 and Dawson methods are more relevant. ... the Rod Mill Wi is probably irrelevant in determining required power for the SAG mill.

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