To sample SAG mill fresh feed belt conveyor was stopped and a sample was taken by removing material over a two meter length Operating condition during sampling was recorded Particle Size distribution of all samples except mill fresh feed and scats reject was determined using 6730 to 38 µm screens Solids content of nbsp

SAG mill circuit optimisation at Ernest Henry Mining

flotation while the hydrocyclone underflow forms the ball mill feed The 6 4m x 8 1m ball mill has rate and SAG mill feed rate Images from the SAG mill feed conveyor belt were also taken These images photographs and video tapes were analysed using the Split image analysis software to estimate the size distribution

SAG Mill Optimization using Model Predictive Control

control provides an additional tool to improve the control of Semi Autogenous Grinding mills and is often able to reduce process SAG mill model predictive control MPC expert systems optimization Laguerre The MPC controller was installed to control the SAG mill weight the belt weight in the ore feed system and the nbsp

influence of feed size on ag sag mill performance ResearchGate

MEASUREMENT OF FEED SIZE Successful manipulation of feed size starts with successful measurement Over a relatively short time period taking a belt cut and sieving the material is the most accurate method of determining the size distribution of the ag sag mill feed However fluctuations in feed size make such sizings nbsp

Optimization using model predictive control in mining Rockwell

Constraint Target MV DV CV CCV From 1st Crusher Screen 1 2nd Cone Crusher Belt 2 Belt 5 3rd Cone Crusher FEED BIN 1 FEED BIN 2 Speed MV Speed MV Ball mill po w er draw Pebble recycle flo w SA G mill po w er draw MV SAG mill ore feed rate X X X X X X X X X X X MV SAG mill water feed rate

Power Transmission Products amp Solutions for Copper Rexnord

Stearns® Motor Mounted Brakes J Map shows a typical copper sulfide ore processing facility EXTRACTION PRIMARY GYRATORY CRUSHER FEEDER Industrial ServicesTM and Falk Renew® BELT CONVEYORS AG SAG MILL SECONDARY CRUSHER AND BALL MILL FLOTATION CELLS THICKENER

Comminution SAG Mill Cost Effective Design Energy Efficiency

Comminution SAG Mill Cost Effective Design Energy Efficiency INTRODUCTION Comminution circuits for minerals processing are selected based on their suitability and efficiency in reducing run of mine ore to the desired feed size for the downstream process The input material ore properties and downstream process nbsp

Model Predictive Control of SAG Mills and Flotation Circuits

Precise control of SAG mill loading and flotation cell level is critical to maximize production and recovery in mineral interacting variables such as rotation speed and ore feed rate on SAG mill weight The diagram shows the fine ore feed belt bringing ore from the feeders under the stockpile to the SAG mill The mass nbsp

Demo Minerality Minerals processing Software Training

The demo contains a pre programmed SABC circuit and 3 rougher cells SABC SAG mill closed with a recycle crusher followed by closed Ball mill Cyclone circuits The functions The size of the feed on the belt can change as a result of a change in the ore body blasting patterns or primary crusher operation

News Industrial Equipment Manufacturing Ltd

Our supply included Jaw Crusher Discharge Conveyors SAG Mill Feed Transfer Conveyor Pebble Recycle Conveyor and other equipment Along with apron feeders belt feeders ball handling system scats handling system and the concentrate handling conveyor the construction crews at Oyu Tolgoi were very pleased nbsp

sag milling in australia – focus on the future Orway Mineral

belt feeders are preferred from the surge bin to the pebble crusher due to superior steady state control and pebble crusher to be suited to duty with proven tramp relief features Typically the maximum pebble crusher feed rate for an SABC circuit is 35 of new SAG mill feed rate but may be higher 45 for an nbsp

startling effect of ball scats removal on sag mill CiteSeerX

belt magnet The trommel undersize stream is pumped to the cyclone cluster where the underflow rejoins the mill feed and the overflow gravitates to the thickening section BALL SCATS ISSUE Whilst conducting the circuit surveys it was noted that there was an excessive presence of ball scats The balls are of the cast nbsp

Projects Terranova Technologies

Design and supply of 3 500 tph primary jaw crushing plant discharge conveyor stockpile feed conveyor two SAG mill feed conveyors and four 60 quot reclaim belt feeders Scope included all mechanical structural electrical instrumentation controls and dust control systems and design of all concrete foundations Heap Leach nbsp

Dry Cross cut Sampling Solutions Multotec

True belt® Sampler Advantages An improvement on the cross belt sampler Suitable for conveyer widths from 450 mm 18 to 2 400 mm 95 Can sample ore containing large rocks i e nominally 300 400 mm Tag SAG Mill feed Material is only sampled in discharge chute after it has been removed from the belt

Projects JJC Grupo

Concrete Works and Electromechanical Assembly of the dry zone 2011 2013 Junín Client Chinalco Primary crusher conveyor belts that feed the SAG mill secondary crusher facilities and ball feeder for the mill in dry zone Structure equipment and piping works were carried out JJC mobilized its largest equipment nbsp

model predictive control application at lumwana copper

mills were supplied by and cyclones and cyclone feed pumps by Krebs Low grade copper ore from the primary crushed ore stockpile is reclaimed via two variable speed apron feeders onto the primary mill feed belt Primary grinding is achieved in an 18MW 11 58m diameter x 5 49m EGL SAG mill

Advanced Grinding Circuit Control Using Online Analyzer Systems

The on belt particle size analyzer has been in process usage at the concentrator since November 2014 and a second unit is to be installed in February 2016 The analyzer is used to monitor and control the particle size distribution of the primary AG mill fresh feed Figure 3 demonstrates the automatic detection of the nbsp

Design for sampling preliminary exploration SAIMM

Circulating load rate ➤ Mill filling balls and ore independently ➤ SAG mill load sizing usually an estimate Flotation circuits ➤ Feed rates ➤ Feed grades Figure 1 Example circuit illustrating desired sampling points Return to belt SAG Mill Scalping Screen Ball Mill Rougher Rougher Scavengers Cleaners

Mining Solutions Automation Technology US Siemens

SAG mill level control SAG mill temperature monitoring and Feeding Siemens belt scale and weighfeeder products are rugged – built for tough operating conditions in the mining industry Milltronics belt scales combine simple drop in installation low maintenance and repeatable accuracy for productive operation

Methods to survey and sample grinding circuits for determining

28 Apr 2016 For ball mill fresh feed samples where a relatively small belt cut length 1–5 m may be required a purpose built belt cut frame usually 1–2 m long can be applied to effec tively delineate the sample lot from the bulk of the material on the conveyor When accessibility to a conveyor sampling location is

Online Ore Sizing Vision Inspection System Quality Inspection AES

The Ore3D Ore Sizing sensor is the latest breakthrough in online non contact ore sizing technology that can be retro fitted over a conveyor belt carrying ore It has been Optimisation of feed size distribution into grinding mills Monitoring oversize and fines in product streams lump in fine Monitoring crusher nbsp

Beltservice Corporation

Application Below deck storage transfer to unloading boom conveyor Material Conveyed Lead Zinc ore 110 PCF 1 8MT M3 1in 25mm x 0in 0mm lump size Application Sag Mill Material Conveyed Copper Ore 111 PCF 1 78MT M3 2 75in 70mm x 0in 0mm lump size Application Tunnel excavation to yard nbsp

How to Improve SAG Mill Tonnage Grinding amp Classification

4 Apr 2017 An effective method that we have used in the past is to have a digital camera on the feed conveyor belt and use an image processing package like SPLIT Using this data as your baseline measurement you can change the feeders or ratio of feeders that you are using to feed the SAG Mill and optimise the nbsp

Stabilising and Optimising a Primary Closed Loop Milling Circuit

29 Aug 2014 circuit such as feed mill and discharge requiring some supervisory layer feed belt measures the solids feedrate to the mill The mill inlet water is ratioed to the solids feedrate The mill discharges into a discharge sump The cyclone feed mill for further grinding and passes the overflow containing the in

Fuller 18 39 x 10 1 2 39 SAG mill 1500 HP Machinery amp Equipment

Includes Stationary amp Ball Feed Chutes Discharge Chute Reject Chute Retractable Feed Chute Etc Offered With Discharge Belt Conveyor amp Sag Rejects Conveyor Complete With Lube System Manufactured By Howard Marten Model Number M8375f Order Number M42483 Includes Oil Pumps Cartridge Filters Etc

Trommel Magnet Protects SAG Mill Circuit Eriez

SAG Mill Circuit Protecting equipment cutting power consumption and reducing reoccurring maintenance cost were prime considerations leading to Newmont Jundee 39 s decision to integrate and the other after a belt to belt transfer station carrying the is possible to identify situations when the feed to the mill and the nbsp

GrindingExpert KnowledgeScape

Home Plantwide Solutions SAG Ball Flotation Ore Sizing and Crushing Thickener Froth Flotation and Feed belt Camera Systems Success Stories Increase SAG mill and ball mill tonnage with better efficiency The GrindingExpert™ solution will automatically adjust feed rate mill speed and water addition to reduce nbsp

sag mill designing in chile Apothecare of Cape Cod

ball and sag mill foundation design sand making ball and sag mill foundation design all ball mill belt conveyor bwz heavy duty apron feeder cs cone crusher flotation machine hammer crusher high frequency screen hj series jaw crusher hpc cone crusher hpt cone Get Price pdf nbsp

SAG Milling At The Fimiston Plant KCGM 2 0 0 1

This product is stockpiled as SAG mill feed on a coarse ore stockpile with a live capacity of 30 000 tonnes The SAG mill was supplied by Fuller and measures 10 97m 36 39 in diameter It is driven by two constant torque measurement of the ore size distribution on conveyor belts were either unavailable or unsuccessful for nbsp

PDF 1044 K Journal of Mining and Environment

different dates The first sampling was carried out from out flows of the SAG mill overscreen cyclone feed cyclone underflow and cyclone overflow After sampling from these streams the feeding conveyor belt to the SAG mill stopped and contents of 6 meters of the conveyor belt were completely discharged into the barrels

applications Rocky DEM DEM Particle Simulator

Stirred Mills SAG mills Crushers and High Pressure Grinding Rolls HPGR are becoming increasingly used for fine and ultra fine grinding Rocky can also help engineers increase production and optimize the overall life of components by helping to reduce spillage chute plugging belt and liner wear dust and noise

sample thesis title with a concise and accurate UQ eSpace

The breakage and transport in AG SAG mills was found to depend on the physical properties and proportion of an AG SAG mill throughput product size and power draw is dependent on the feed composition and it could Although the ideal procedure for obtaining the mill feed sample is to perform a belt cut just after


from 1 4 to 34 kWh t and Bond ball mill work index values vary from 6 to 24 kW t for the same ores Project design tonnages varied 8 2 11 8 18 5 53 S 53 1 Mo Crushed feed belt cut ore BM 0 46 28 0 14 0 324 BALL Mill s DESIGN Fd t h JOB TESTS ORE DESCRIPTION Av Ratio SAG BWi SAG Mill s nbsp

Feeder Control Ore Feed Size and Mill Tonnage 911 Metallurgist

19 Mar 2017 This increases the speed or velocity that it travel through the mill leaving the coarse ore the extra room required to grind it If however this finer material isn 39 t there and the volume on the belt is made up of all course ore that requires extended grinding time the efficiency of the mill is greatly reduced simply by nbsp

Compare NIAflow

Dry mineral processing Belt Conveyer Vibrating Feeder Reciprocating Feeder Apron Feeder Bucket Elevator Stationary Grid Grizzly Feeder Roller Screen Jaw New SAG Mill Separation Whether density separation by jigs and upstream sorter or all kinds of magnetic separations this key process is part of every nbsp

Ball mill Wikipedia

In case of continuously operated ball mill the material to be ground is fed from the left through a 60° cone and the product is discharged through a 30° cone to the right As the shell rotates the balls are lifted up on the rising side of the shell and then they cascade down or drop down on to the feed from near the top of the nbsp

SAG Mill Chutes Neptuno

Neptuno ® has developed SAG Crushing Supply Chutes which allow for optimum performance and maximum service life These special designs have allowed To increase processed material capacity To diminish backlogs Improvements in plant house keeping Neptuno ® designs and produces shields for the nbsp

Grinding Circuit Improvements at Evolution SRK Consulting

crusher and a 3 7 MW ball mill in closed circuit with 400 mm cyclones The primary grinding circuit can be operated in a pebble crusher 39 crush forward 39 configuration where the SAG mill screen oversize material scats or pebbles is crushed and passed onto the ball mill using a feed belt conveyor The original Edna May nbsp

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