# power based sag mill design calculations

### GROSS POWER CALCULATOR smctesting

GROSS POWER CALCULATOR General (slurry pool) is predicted from mill design and slurry flow data and its impact on power draw is then predicted. Slurry pooling causes the power draw in AG and SAG mills to be lower than a mill without a power draw of an AG/SAG mill to drop can be gauged by switching the discharge mechanism choice in

Get price### O. I. SKARIN N. O. TIKHONOV CALCULATION OF THE

Decisionmaking on selection of SAG mills increasingly uses the methods of sizing the milling power based on laboratory tests on grindability of minerals. This article considers one of such methods allowing determination of mill characteristics based on the Bond work indexes of

Get price### O. I. SKARIN N. O. TIKHONOV CALCULATION OF THE

Decisionmaking on selection of SAG mills increasingly uses the methods of sizing the milling power based on laboratory tests on grindability of minerals. This article considers one of such methods allowing determination of mill characteristics based on the Bond work indexes of

Get price### A comparative ceecthefuture

The power calculations do not include any additional design factors. The installed power was estimated based on the recommendation by Doll (Doll, 2012) considering the various power losses in the transmission system. The estimated SAG mill power includes a correction for the interstitial mill filling. In the case of the estimated ball

Get price### Sag in Overhead Conductor Electrical4U

Apr 17, 2018 · What is Sag?Sag is defined as the different in level between points of supports and the lowest point on the conductor. Here AOB is the transmission line conductor. Two supports are at point A and at point B. AB is the horizontal line and from this horizontal line to point

Get price### power calculation formula of sag mill rentconsultancy

power calculation formula of sag mill greenrevolution . PDF (1044 K) Journal of Mining and Environment (JME) power index (SPI), and a formula for the SAG mill calculation of liner weight and volume at each stage a Starkey mill was used to measure SAG mill power. Get Price

Get price### TECHNICAL NOTES 8 GRINDING R. P. King

LG A mill power equation for SAG mills. Minerals and Metallurgical Processing. Feb 1990 pp5762. Gross power No load power Net power drawn by the charge (8.13) The net power is calculated from Net power KD2.5L e! c./ Watts (8.14) In equation 8.14, D is the diameter inside the mill liners and Le is the effective length of the mill including the

Get price### The Selection and Design of Mill Liners milltraj

multistream plants, where mill liner design and selection is only tackled on a cost consumables basis. However, the gains to be had through good liner design and selection are just as great as on the large SAG mills. This paper looks at recognising problems in liner design and selection in

Get price### Optimization of the Design of SAG Mill Internals Using

calculations can be used to predict wear on all wear surfaces as well as breakage of particles on a size by size basis and ball/liner breakage Figure 1. Example of HFS modeling of ball and particle motion in a slice of SAG mill using DEM simulation. The CFD simulations used are based on the appliion of the Navier Stokes equation (with

Get price### power calculation formula of sag mill rentconsultancy

power calculation formula of sag mill greenrevolution . PDF (1044 K) Journal of Mining and Environment (JME) power index (SPI), and a formula for the SAG mill calculation of liner weight and volume at each stage a Starkey mill was used to measure SAG mill power. Get Price

Get price### Powerbased grinding models for design and geometallurgy

Powerbased grinding models for design and geometallurgy When: 14 15 October Where : for the early design of grinding circuits and for conducting geometallurgy calculations. The course is slanted towards SAG milling, but the methods are also applicable to other types of 11:0012:30 Mill power draw models for ball mills and SAG mills

Get price### SINGLE STAGE SAG/AG MILLING DESIGN Metallurgy

SINGLE STAGE SAG/AG MILLING DESIGN Brian Putland 1, Fred Kock & Leigh Siddall1 OMC generally use power based methods using either the results of an Autogenous The SAG mill model in the JKSimMet software has not been shown to accurately reproduce the performance of a single stage mill for greenfield design. A review of most modern power

Get price### Orway Mineral Consultants Canada Ltd. Mississauga, ON

OMC POWERBASED COMMINUTION CALCULATIONS FOR DESIGN, MODELLING AND CIRCUIT OPTIMIZATION P. Scinto, A. Festa, B. Putland Orway Mineral Consultants Canada Ltd. Mississauga, ON., L4W 5N5, Canada com.au ABSTRACT Orway Mineral Consultants Ltd (OMC)as a consultancy has speciali zed in comminution circuit design for over 30 years.

Get price### Sag in Overhead Transmission Line and Its Calculation

Sep 21, 2016 · Sag in Overhead Transmission Line and Its Calculation Sag in overhead Transmission line conductor refers to the difference in level between the point of support and the lowest point on the conductor. As shown in the figure above, a Transmission line is supported at two points A and B of two different Transmission Towers.

Get price### Grinding Circuit Design for Adanac Moly sgs

in terms of SAG power index, SPI (for SAG grinding) and Bond Ball mill work index, BWi (for ball mill grinding). A further measure, the Minnovex crusher index, Ci was also measured for use in the CEET program to determine SAG mill feed size (Kosick and Bennett, 2001). The SPI values varied from 13.5 to 107 minutes with an average of 53 minutes.

Get price### Mill (grinding) Wikipedia

SAG is an acronym for SemiAutogenous Grinding. SAG mills are autogenous mills but 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) motor.

Get price### A Method to Determine the Ball Filling, in Miduk Copper

autogenous (SAG) Mill via an utilized method. Miduk copper concentrator is loed in Kerman ball mill as a function of mill`s power draw or investigation on the ball filling ratio under batch wet conditions, due to load density alters [2, 3]. load percentage calculation that belongs to mill diameter

Get price### TECHNICAL NOTES 8 GRINDING R. P. King

LG A mill power equation for SAG mills. Minerals and Metallurgical Processing. Feb 1990 pp5762. Gross power No load power Net power drawn by the charge (8.13) The net power is calculated from Net power KD2.5L e! c./ Watts (8.14) In equation 8.14, D is the diameter inside the mill liners and Le is the effective length of the mill including the

Get price### DESIGN OF AG/SAG MILL CIRCUITS USING THE SMC TEST

DESIGN OF AG/SAG MILL CIRCUITS USING THE SMC TEST. which makes it valuable for predicting AG/SAG mill feed size as well as conducting MinetoMill projects. The powerbased approach to

Get price### TECHNICAL NOTES 8 GRINDING R. P. King

LG A mill power equation for SAG mills. Minerals and Metallurgical Processing. Feb 1990 pp5762. Gross power No load power Net power drawn by the charge (8.13) The net power is calculated from Net power KD2.5L e! c./ Watts (8.14) In equation 8.14, D is the diameter inside the mill liners and Le is the effective length of the mill including the

Get price### USING THE SMC TEST® TO PREDICT COMMINUTION

USING THE SMC TEST® TO PREDICT COMMINUTION CIRCUIT PERFORMANCE AG/SAG mill and crusher circuit simulations through the use of JKSimMet. Independent of this it can be used in powerbased calculations, which in conjunction with the Bond ball work index test, enable the prediction of the specific energy of comminution circuits

Get price### Ballmill Design Power Draw Edumine Online Tool

An interactive design tool for determination of ballmill power draw. Notes on Ball Mill Design Power Draw Power Draw is steady running power requirement ignoring drivetrain losses and startup loads.

Get price### Modelling SAG milling power and specific energy

Modelling SAG milling power and speciﬁc energy consumption including the feed percentage of intermediate size particles operating SAG mills (it is not intended for design, but could help ables with the dependent variables SAG mill power and speciﬁc energy, to assure models with ﬁxed parameters. The total load it

Get price### AG Autogenous & SAG SemiAutogenous Mill Design Calculations

Table of ContentsSAG Mill ChargeSAG Mill Horsepower — Drive PowerOre Testing for AG & SAG Grinding Mill Design Mill Sizing: After laboratory and pilot plant testing confirm the feasibility of autogenous or semiautogenous grinding, it can be used to establish the exact grinding circuit and mill size. In the pilot plant tests, the tare power of the pilot plant mills should be determined

Get price### Design of the 40 foot SAG Mill Installed at the Cadia Gold

DESIGN OF THE 40 FOOT DIAMETER SAG MILL INSTALLED AT THE CADIA GOLD COPPER MINE reduced efficiency calculation, based on pilot plant SAG mill discharge size distributions, pilot plant SAG

Get price### GROSS POWER CALCULATOR SMC Testing

GROSS POWER CALCULATOR General Design Data – 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 power draw of an AG/SAG mill to drop can be gauged by switching the discharge mechanism choice in

Get price### Design SAG mill production when you need it most: In day 1

pressure on mill sizing has resulted in nonflexibility in new SAG mill circuit designs. In order to defend the mill size selected, the owner''s engineers need to be able to quantify the loss in productivity that will occur if the SAG mill is downsized. Power based methods allow this calculation to be executed rapidly with good accuracy.

Get price### Modelling SAG milling power and specific energy

Modelling SAG milling power and speciﬁc energy consumption including the feed percentage of intermediate size particles operating SAG mills (it is not intended for design, but could help ables with the dependent variables SAG mill power and speciﬁc energy, to assure models with ﬁxed parameters. The total load it

Get price### Modelling SAG milling power and specific energy

Modelling SAG milling power and speciﬁc energy consumption including the feed percentage of intermediate size particles operating SAG mills (it is not intended for design, but could help ables with the dependent variables SAG mill power and speciﬁc energy, to assure models with ﬁxed parameters. The total load it

Get price### Calculation of Sag & Tension Circuit Globe

Calculation of Sag & Tension Calculation of sag and tension in transmission line depend on the span of the conductor. Span having equal level supports is called level span, whereas when the level of the supports is not at an equal level is known as unequal level span. The calculation of conductor at an equal level shown below.

Get price### SAGMILLING .:. Home

Sagmilling is home to a collection of both free and subscriptionbased calculation tools to aid metallurgical process engineers perform comminution calculations. Grinding circuit design tools, including for SAG millball mill circuits, and geometallurgy energy models are available to subscribers.

Get price### SINGLE STAGE SAG/AG MILLING DESIGN Metallurgy

SINGLE STAGE SAG/AG MILLING DESIGN Brian Putland 1, Fred Kock & Leigh Siddall1 OMC generally use power based methods using either the results of an Autogenous The SAG mill model in the JKSimMet software has not been shown to accurately reproduce the performance of a single stage mill for greenfield design. A review of most modern power

Get price### Outotec Grinding technologies

Outotec Grinding technologies 005 Robust design Outotec mills are designed to produce optimal results, even in harsh environments. Outotec offers both trunnion and shell supported mill design, complemented by a drive solution tailored for optimum performance in any environment. Mill bearings The type of support bearing is selected on the basis of

Get price### SAG mill optimisation using powerbased simulations Ausenco

SAG mill optimisation using powerbased simulations. Author Dr. Rajiv Chandramohan, Robert Braun, Grinding mill trajectory model to determine safe operating speed ranges based on liner/lifter design validating the calculation improvements. Comparisons of actual and predicted data show improved response of the program for variable

Get price### Calculation of Sag & Tension Circuit Globe

Calculation of Sag & Tension Calculation of sag and tension in transmission line depend on the span of the conductor. Span having equal level supports is called level span, whereas when the level of the supports is not at an equal level is known as unequal level span.

Get price### AMIT 135: Lesson 7 Ball Mills & Circuits – Mining Mill

Explain the role of ball mill in mineral industry and why it is extensively used. Describe different types of ball mill design. Describe the components of ball mill. Explain their understanding of ball mill operation. Explain the role of critical speed and power draw in design and process control.

Get price### TECHNICAL NOTES 8 GRINDING R. P. King

### The Science of Comminution

SAG Mill Load Control 28 Mill Power Indiion 28 Cyclone Pressure 28 SAG Mill Speed Control 28 introducing important innovations in mill design. Starting from the Late 1970s, Scanmec proved designs large mill units based on the principle of shell mounted supports. In this case, rotating

Get price### sag mill power cost calculations stiftingfoet

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 density, feed size as F80 and maximum ''chunk size'', product size as P80 and maximum and

Get price### MODELING THE SPECIFIC GRINDING ENERGY AND BALL

2 MODELLING THE SPECIFIC GRINDING ENERGY AND BALLMILL SCALEUP Ballmill scale up (Bond''s Law)Data: zBond work index w i zFeed D f and product d size (both 80% cumulative passing) Result: The specific grinding energy w Mill power draw P = wT, where T the mill capacity Mill dimensions (from Tables or charts)

Get price### Benchmarking: SAG Mill Power Draw Models SAGMILLING

2 Benchmarking: SAG Mill Power Draw Cadia 3 Benchmarking: SAG Mill Power Draw The calculations below refer to the "Austin Model + Cone" meaning the cone calculations based on Austin''s publiion (see Valery, W. and Hart, S., Design of the 40 foot SAG mill installed at the Cadia Gold Copper Mine, SAG 2001 Conference, pp. I43 to I58

Get price### Design of the 40 foot SAG Mill Installed at the Cadia Gold

DESIGN OF THE 40 FOOT DIAMETER SAG MILL INSTALLED AT THE CADIA GOLD COPPER MINE reduced efficiency calculation, based on pilot plant SAG mill discharge size distributions, pilot plant SAG

Get price### A Method of C alculating Autogenous/ SemiAutogenous

achieve a certain transfer size, based on the 80 per cent passing value, an inefﬁ ciency factor must be applied to the SE of single stage ball mills, rod mills or AG/SAG mills when calculating power according to the Bond Third Theory method. Rod mill and AG/SAG mill products are similar and tend to

Get price### (PDF) Powerbased comminution calculations using Ausgrind

PDF Ausgrind is Ausenco''s inhouse program used for powerbased comminution calculations. Proprietary calculations have been developed and reconciled

Get price### sag mill power cost calculations stiftingfoet

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 density, feed size as F80 and maximum ''chunk size'', product size as P80 and maximum and

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