can sag mill and ball mill have the same dimensions

DEM Simulation of Mill Charge in 3D via GPU Computing - Scientific ...

specialists who can handle the complexity of the code as well as have access to ... simulation results in three dimensions are achievable in a few hours using ... four simulation tasks, consisting of AG, SAG and ball mills are reported. ... Mishra (2001) used the same 3D code for the prediction of power draft in plant scale mills.

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The influence of feed size on autogenous and semi - autogenous ...

This paper describes the influence of feed size distribution on ag/sag mill performance with. reference to a range of ... ag/sag feed size can have a considerable overall benefit. Keywords: ... with SAG mills. being increasingly less so as the ball charge is increased. .... distributions that were obtained from the same stockpile.

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Grinding Mill Types, Construction, and Usage | Grinding Mills ...

This review looks at the basic concepts of grinding mills, including their types, principle ... Grinding within a mill is influenced by the size, quantity, the type of motion and ... This is the rotational speed where balls will not fall away from the mill's shell. ... go along the mill shell and then get thrown off and follow a parabolic path.

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ONLINE SAG MILL PULSE MEASUREMENT AND OPTIMIZATION ...

throughput, make-up ball size, mill speed, liner profile and ball addition rates. At the same time, it can also be used to design balls and liner systems that can ...... operations and AE sensors have particularly made their way into SAG mill...

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breaking down - TABPI

Oct 4, 2013 ... 22 megawatts, while 42-foot, 28-megawatt SAG mills have been ... In terms of energy use, it can be more cost-effective to prepare ore for the ball mill by sending it through multiple ... mill. The same staged approach to grinding divides the circuit into ... On the other end of the size spectrum, stirred mills grind.

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Mineral Processing - presentations

May 15, 2014 ... The size and shape which can be determined by these 19 OPERATING .... It has 111 SERIES OF BALL MILLS – MUFULIRA MINE GRINDING AISLE ..... Assumptions 1. crushing is conducted to yield grains of same size.

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Solutions for Mining - WEG

All WEG customers in the mining market have a .... For Dual or Single Pinion Configuration of Ball and SAG Mills, the ... For the HPGR Mills, the system can precisely control each induction motor coupled with the .... starter) with connecting tanks, ensuring the same resistance to all motors. ... dimensions, variety of insulating.

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Polycorp - Minings - Rubber Liners

Rubber Mill Liners are chosen for most Primary, Secondary and Tertiary Ball ... And in many cases rubber components are best suited for specific areas in AG and SAG mills. ... Polycorp's rubber liners are designed and arranged so that the lifter bars can ... Rubber Liners are about 1/8 by weight of steel liners of same size...

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IsaMill™ Technology Used in Efficient Grinding Circuits

This paper will examine the use of IsaMill™ technology in fine grinding (P80 ... Figure 1: Comparison of McArthur River and Broken Hill Ore Grain Size (Grey .... the energy intensity, while ball mills can only have a relatively low amount of .... same time there is negligible contamination of ground material with deleterious ions.

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Improved Relationships for Discharge in SAG/AG Mills - UQ eSpace

there has been a shift of emphasis on ball mill optimization to semi-autogenous grinding ... test that can accurately measure and explore discharge mechanisms.

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Mine-to-mill optimisation: effect of feed size on mill throughput

Over the past 15 years, mine-to-mill studies have focused attention on the impact blast fragmentation has on ... mills and onto the secondary ball mill circuits, ... to the crushing/grinding circuit – can achieve up ..... using the same mill sizes.

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How to Convert a SAG Mill to a Ball Mill | eHow

SAG mills have lifting plates to move the steel balls and rocks higher up the drum ... a more uniform job of grinding because all the steel balls are the same size and ... to use the converted SAG as the first stage of a ball mill processor, you can...

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Energy and Cost Comparisons of HPGR-based Circuits - EMJ

Dec 9, 2013 ... The results showed that the HPGR-ball mill circuit achieved a 21% reduction in ... SAG-ball mill circuit at the same P80 grind size of 160 mircons (μm). ... Up until now, tumbling mills such as AG/SAG mills and ball mills have had a ... novel HPGR-stirred mill circuit arrangement could achieve energy savings...

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effects of grinding media shapes on ball mill performance

It has not been submitted before for any degree or examination in any ... grinding. Ball size distribution inside an industrial mill was analysed in terms of ...... avenues that can lead to an understanding and improvement of the milling process. .... same for a batch test, the standard Bond locked cycle test, or a steady state...

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Autogenous and Semiautogenous mills - zenith

AG/SAG mills can accomplish the same size reduction work as two or stages of crushing and screening, a rod mill, and some or all of the work done by a ball mill. ... Gearless mill drive (GMD) technology has further expanded the use of large...

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sag mill - Starkey & Associates Inc.

Sep 10, 2010 ... The selection of SAG and ball milling sizes and configurations for new projects is ... from a senior mining consultant who recently said, “if a SAG mill can ... As described in Figure 2, these ores were observed to have the same.

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Optimizing your SAG mill operation | - IM-Mining

Mar 21, 2007 ... As the 'heart of the plant' could be viewed as the milling/grinding area, ... As a result, mines have shifted their emphasis in optimization from ball mills to SAG mills. ... Single stage AG/SAG mills have to handle large amounts of slurry as ... back into the mill increase with larger pebble port or grate slot size.

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Energy Consumption in Mining Comminution - ScienceDirect

In this paper the energy needs for crushing and milling. (comminution) are ... The energy infrastructure can be made operational with minimal energy ... comminution (particle size reduction: crushing and grinding), the .... site and have a variety of configurations: Ball mill, rod mill, HPGR mill (high .... stressors are the same all.

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The Selection and Design of Mill Liners - MillTraj

Mines (WA) 36ft SAG mill the number of Outer Head Liners was reduced from ... mill, corrosion environment, size of balls, mill speed, etc. liner design and ... Over the last half century, rubber mill linings have been used successfully in ... so the same simulation tools can be used with some adjustments for the lining material.

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SAG Mill Grinding Circuit Design - Mineral Processing & Extractive ...

Jun 6, 2016 ... SAG mills have a higher installed power density for a given plant footprint relative to AC mills. ... a higher unit power input (kWh/t) than an SAG circuit milling the same ... In the presence of suitable ore, an autogenous circuit can provide ... SAG discharge screens, top size control to the ball-mill circuit feed is...

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A General Model for Semi-autogenous and Autogenous Milling

an 8 m diameter SAG mill with LID = 0.5 grinding a copper ore, and predicted ... Two FAG mills of LID = 2 were necessary to give the same capacity, and the ... size i material returned to the mill. The .... by balls. In addition, the mass transport constant k will correspond to that for a m ... a single size of ball of class k have been.

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Energy and Cost Comparisons of HPGR Based Circuits with ... - CEEC

mill circuit at the same P80 grind size of 160 µm. ... Up until now, tumbling mills such as AG/SAG mills and ball mills have had a dominant bearing ... whether the novel HPGR - stirred mill circuit arrangement could achieve energy savings in...

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Ore Crushing - Chemistry Department - Elmhurst College

Inside the mill, the ore is mixed with water in two rotating SAG mills which use the ... The last screen has 10 mm x 20 mm slots in it. ... it is about the same size as the space created between four mill balls that collide ... We may crush these rocks to a smaller size before feeding them back into the SAG mills, and you can see a...

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Mill (grinding) - Wikipedia, the free encyclopedia

A mill is a device that breaks solid materials into smaller pieces by grinding, crushing, or cutting ... After the grinding the state of the solid is changed: the grain size, the grain size .... Industrial ball mills can be as large as 8.5 m (28 ft) in diameter with a 22 MW motor, .... This type of mill uses the same principle as VSI Crusher...

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Gearless Mill Drive Protection Improvements and Its ... - CiteSeerX

Laguna Seca concentrator uses a SAG mill and three ball mills, all driven by ... Its dimensions are: Diameter : 38 feet ... addition, it does not need any gear box and ring gear and therefore .... secondary windings with the same power and wye-.

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Energy Use of Fine Grinding in Mineral Processing | SpringerLink

Dec 18, 2013 ... The stirred mills used to perform fine grinding have additional process .... 8] observed that an Isamill and SMD, grinding the same feed with the ... 6] At lower product sizes, both tower mills and ball mills will overgrind fines.

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influence of feed size on ag/sag mill performance - zenith

This contrasts with ball mills whose grinding media are generally constant with ... dependence of ag/sag mills on feed size can be turned to advantage through its ... have the same F80 but clearly have different distributions. These would.

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Model Predictive Control of SAG Mills and Flotation Circuits - Andritz

Precise control of SAG mill loading and flotation cell level is critical to ... the use of a model-based predictive control (MPC) algorithm which has been ... PID does not perform well when there are challenging loop dynamics (such as .... in ball mills. ... mills are a critical component in mineral processing operations; at the same...

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the value of rigorous surveys – the los bronces ... - zenith Endress

layout, with mismatching mills and the need to transfer intermediate streams between the ... containing primary SAG mills of differing dimensions, followed by secondary ball mills. ... A large part of SAG 2 sump slurry is pumped to ball mill 3. .... collected had to be adjusted to the same effective cutter width, as the coarse and...

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startling effect of ball scats removal on sag mill performance - Gekko

the ball scats from a single-stage SAG mill. These scats ... had increased dramatically at the coarser end of the size distribution. This work .... pooling in the mill, the surface of the charge could unfortunately not be ... same steady state as previously. .... load of steel scats has greatly improved the utilisation of the crusher, as.

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