Language:
Currency : £ $

effect of grate discharge area of sag mill performance

sag mill discharge screen - aircondicoza

MOTION AND SLURRY FLOW IN PLANT SCALE SAG MILLS , 4113 Effect of mill speed with grate-only discharge type 25 , recycle crushing and redesign of grates and trommel screens are a few routes taken at considerable expense 11 Get Price

[read more]

Ball Mill Critical Speed & Working Principle - YouTube

Jun 19, 2015· The effect of Ball Mill RPM speed going from sub-critical to super-critical helps understand the Ball Mill Working Principles of ball-on-ball VS ,

[read more]

Modelling SAG milling power and specific energy ,

Modelling SAG milling power and specific energy consumption including the feed percentage of intermediate size particles , that the feed particle size has on the mill performance, particularly on the power and on the specific , the SAG mill critical speed; Pc = SAG mill power consumption .

[read more]

effect of balls charge on sag mill performance

startling effect of ball scats removal on sag mill performance - Gekko , increase, which may result in spalling of balls and blocking the grate discharge Optimization of mill performance by using Get Price , optimization , Different combinations of SAG mill ball charge and grate open area were tested until 2006 A Get Price .

[read more]

Total primary milling cost reduction by improved liner ,

TOTAL PRIMARY MILLING COST REDUCTION BY IMPROVED LINER DESIGN 5 Grate discharge to overflow conversion in UG2 In order to reduce the ball wear rate, Plant C converted their primary ball mill from grate to overflow discharge while monitoring different parameters before and after the conversion The feed to the mill had 698% and 1583% passing 75

[read more]

Pilot and laboratory test procedures for the design of ,

The mill power and grinding efficiency is affected by the slurry hold-up The slurry hold-up can be changed during a campaign by increasing or decreasing the total grate discharge opening area Figure 2 shows an example of a discharge grate used in the pilot mill and Figure 3 shows modifications which can be performed to increase or

[read more]

MINERAL PROCESSING - bradken

Mill Liner Life Performance 30 25 20 15 10 5 0 DE Middle Liner DE Middle Pulp Lifters DE Grate DE Outer Pulp Lifters Discharge Cones Months BRADKEN COMPETITOR The Discharge End (DE) pulp lifter is a critical component of autogenous (AG) and semi-autog-enous (SAG) grinding mills, having a significant impact on the throughput, efficiency and .

[read more]

INCREASING SAG MILL CAPACITY AT THE COPPER ,

INCREASING SAG MILL CAPACITY AT THE COPPER MOUNTAIN MINE THROUGH THE ADDITION OF A PRE-CRUSHING CIRCUIT , optimization of the SAG mill in terms of discharge grates, ball size and slurry , while the water and fines are deposited in the dam impoundment area

[read more]

(DOC) Main text | Gurubasayya Swamy - Academiaedu

Effect of feed size on SAG mill performance Feed characteristics of ROM ore have large impact on SAG mill performance Results obtained from the study of effect of feed size on mill throughput are presented in table 6 From the results obtained it is found that the mill performance seems to be the best when feed contains at least 30 to 40% of +3in

[read more]

Grates Opening In Sag Mill - socialmediapmnl

grates opening in sag mill As a guideline, mill throughput is maximized with shell lifters between SAG Mill Liner Design 911 Metallurgist Aug 17, 2017 To a more significant degree than in other comminution devices, SAG Mill Liner Design and Configuration can have a substantial effect mill performance

[read more]

Performance characterisation of AG/SAG mill , - DeepDyve

Aug 01, 2014· Performance characterisation of AG/SAG mill pulp lifters using CFD techniques The pulp discharge mechanism, consisting of a grate and pulp lifter arrangement, is an integral component of these mills The grate retains over-size particles in the mill charge

[read more]

Optimizing your SAG mill operation - International Mining

The commercially viable and industry accepted alternate is a grate discharge trunnion supported mill or a grate discharge shell supported mill using pulp lifters The only way to eliminate the problem of flow-back and carry-over of slurry and pebbles is by optimizing the design of the discharge arrangement

[read more]

sag mill grate design - trotsvanaalsmeernl

effect of grate discharge area of sag mill performance factors affecting the performance of the sag mill effect of grate discharge area of sag mill performance, grate design, grate open area and mill speed to the volumetric discharge rate, would affect sag mill performance, mills and the effect of grate design [More] Advanced Simulation for Semi Autogenous Mill

[read more]

DISCRETE ELEMENT METHOD MODELING OF PULP LIFTER ,

DISCRETE ELEMENT METHOD MODELING OF PULP LIFTER PERFORMANCE Pengbo Chu Department of Mechanical Engineering McGill University Montreal, Canada August 2011 _____ A thesis submitted to McGill University in partial fulfillment of the requirements for ,

[read more]

Slurry flow in mills: grate-only discharge mechanism (Part ,

Abstract Discharge grates play an important role in determining the performance of autogenous, semi-autogenous and grate discharge ball mills The flow capacity (grinding capacity) of these mills is strongly influenced by the discharge grate design-open area and position of apertures, as well as the performance of the pulp lifters

[read more]

1-way-coupled pilot SAG mill draft1 - publicationscsiroau

discharge grates, along the pulp lifters and its discharge from the mill is an important contributor to the efficiency of the grinding process within a SAG mill Poor transport of finer ground material can adversely affect grinding leading to excess energy consumption and over-grinding of fine material

[read more]

grate discharge ball mill - maviprodrybe

STARTLING EFFECT OF BALL SCATS REMOVAL ON SAG MILL , Figure 1 The mill interior and details of the discharge grate Figure 2 Ball scats IV-127 Evidence of Excess Scats Mill charge When inspecting the mill charge during the crash stop at the end of each survey it was observed that the scats represented a substantial portion of the charge surface layer A few of the many in evidence are.

[read more]

DISCRETE ELEMENT METHOD MODELING OF PULP LIFTER ,

DISCRETE ELEMENT METHOD MODELING OF PULP LIFTER PERFORMANCE Pengbo Chu Department of Mechanical Engineering McGill University Montreal, Canada August 2011 _____ A thesis submitted to McGill University in partial fulfillment of the requirements for ,

[read more]

The Selection Design and Application of Mill Liners for ,

>Liner design has a significant effect on mill performance and liner life >Engineering approaches have highlighted mill performance with mill modelling and the use of improved materials >Liner design ,with the advent of large diameter SAG mills, the issues of design, selection, monitoring and evaluation of mill performance is critical

[read more]

startling effect of ball scats removal on sag mill performance

startling effect of ball scats removal on sag mill performance These scats are non- spherical ball fragments ,The Trunnion Magnet is an enhanced system for the separation and removal of balls and broken ball pieces typically used for ore processing in ball/ SAG mill, sag mill ball charger - achterhoeksebouwcooperatienl

[read more]

Taking Control of the Mill Feed R2 - orwayau

TAKING CONTROL OF THE MILL FEED CASE STUDY - PARTIAL SECONDARY CRUSHING MT RAWDON , the ball mill to a grate-discharge unit to draw full motor power , The effect of feed size in AG/SAG milling has been studied extensively with an early review

[read more]

(PDF) Optimisation of the Sossego SAG mill | Mauricio ,

SAG mill throughput as a function of grate open area As shown in Figure 2 the grate open area has a strong effect on Sossego SAG mill throughput The nominal capacity of the circuit should be achieved with a combination of 135% ball charge and 108% open area with 3 and 35 inch apertur

[read more]

COMMISSIONING OF THE 375ktpm AUTOGENOUS MILLING ,

A single 34ft x 173ft, grate discharge FAG mill with 2 x 52MW installed power is utilised for the primary grinding duty The mill shell is designed to carry up to 4% steel load should it be required to run in SAG mode The feed to the mill is approximately 574tph for a 24 hour, 363 day/year operation at 90% availability to achieve the 375ktpm

[read more]

(DOC) Main text | Gurubasayya Swamy - Academiaedu

Effect of feed size on SAG mill performance Feed characteristics of ROM ore have large impact on SAG mill performance Results obtained from the study of effect of feed size on mill throughput are presented in table 6 From the results obtained it is found that the mill performance seems to be the best when feed contains at least 30 to 40% of +3in

[read more]