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

Power Based Sag Mill Design Calculations Protable Plant » gear drive sag mill vs gearless drive sag mill » design calculations for ball mill. Get Price. SAG Mill Grinding Circuit Design. SAG Mill Grinding Circuit Design if insufficient SAG power is installed. Rather than design the SAG required based on different ore types.

Mar 08, 2013· calculation of ball mill grinding efficiency. dear experts . please tell me how to calculate the grinding efficiency of a closed ckt & open ckt ball mill. in literatures it is written that the grinding efficiency of ball mill is very less [less than 10%]. please expalin in a n excel sheet to calcualte the same. thanks. sidhant. reply

An updated data set for sag mill power model calibration This paper expands the SAG mill survey database published by the Author at Procemin 2013. The new database includes 49 published SAG/AG mill surveys and includes mills from all over the world.

- SAG Mill Load Control 28 - Mill Power Indication 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 ...

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.

LG A mill power equation for SAG mills. Minerals and Metallurgical Processing. Feb 1990 pp57-62. 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 ...

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 ...

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

The Selection and Design of Mill Liners . ... good and bad liner design are given, followed by a rigorous approach to liner design based on the best technology available, combined with experience and logical engineering thinking. ... Mines (WA) 36ft SAG mill the number of Outer Head Liners was reduced from 36 to 18 pieces and in

power based sag mill design calculations. Ball Mill Design/Power Calculation 911 17 Mar 2017 The basic parameters used in ball mill design (power calculations), rod mill or any tumbling mill sizing. ball mill circuit design calculation tisonics. design of the kubaka grindng circuit using spi . Starkey & Associates. truly successful grinding ...

The SAG mill pinion energy is determined from the SAGDesign™ testwork results as follows : W SDT = revs (16,000 + m s)) / (447.3 m s) where : W SDT = AG/SAG Specific Pinion Energy from a F 80 of 152.4 mm to a T 80 of 1.7 mm, kWh/ton ground revs = Cumulative number of SAG test mill revolutions to 80% passing 1.7mm m s = SAG mill feed sample ...

Dec 12, 2016· 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 ...

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 ...

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 finally the type of circuit open/closed ...

autogenous (SAG) Mill via an utilized method. Miduk copper concentrator is located 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 ...

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…

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

2 MODELLING THE SPECIFIC GRINDING ENERGY AND BALL-MILL SCALEUP Ball-mill 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)

Power-based 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 ... 11:00-12:30 Mill power draw models for ball mills and SAG mills ...

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

power based sag mill design calculations. Power Based Sag Mill Design Calculations - , ball mill power consumption formula SAG product will draw more power from the SAG Mill and less power from the Ball Mill . [Chat Online] Choosing a SAG Mill to Achieve Design Performance.

Decision-making 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 …

only small mill tubes were manufactured and also the magnetic forces were less compared to today’s large high power mills. Mechanical design calculations were based on static load cases in terms of forces and acceleration loads. The simulation models were very coarse due to the rudimentary computer capacities which were available at this time.

Sagmilling.com 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 available to subscribers.

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 Mine-to-Mill projects. ... The power-based approach to ...

classify the AG/SAG mill product into two products; the phantom cyclone overflow that is similar to the final ball mill product, and the phantom cyclone underflow is then used as an adjusted ball mill feed for the ball mill power calculation. This technique is specifically suitable for model-based calculations, as it requires efficiency curve).

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.

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 drive-train losses and startup loads.

OMC POWER-BASED COMMINUTION CALCULATIONS FOR DESIGN, MODELLING AND CIRCUIT OPTIMIZATION P. Scinto, A. Festa, B. Putland Orway Mineral Consultants Canada Ltd. Mississauga, ON., L4W 5N5, Canada p>

power based sag mill design calculations - , Choosing a SAG Mill to Achieve Design Performance - Starkey , the correct power required to grind ore in a SAG mill, by developing ore , Based on actual 3-ft .

PDF | Ausgrind is Ausenco's in-house program used for power-based comminution calculations. Proprietary calculations have been developed and reconciled …

Ball Mill Design/Power CalculationThe basic parameters used in ball mill design (power calculations), rod mill or any tumbling mill sizing are; material to be g