blast fragmentation for maximising the sag mill

Downstream Effects of Cave Fragmentation | SRK Consulting

Downstream Effects of Cave Fragmentation | SRK Consulting

Achieving and sustaining productivity benefits through a mine to mill approach By Kristy-Ann Duffy, Process Consultant - Mining and Mineral Processing, Hatch The mining industry is facing low metal prices, lower grade and complex deposits that are difficult to exploit, as well as growing challenges associated with the cost and supply of energy ...

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Blast fragmentation for maximising the SAG mill ... - CORE

Blast fragmentation for maximising the SAG mill ... - CORE

 · Influence of explosive energy on the strength of the rock fragments and SAG mill throughput Influence of explosive energy on the strength of the rock fragments and SAG mill throughput Michaux, S.; Djordjevic, N. 2005-04-01 00:00:00 Extensive in-situ testings has shown that blast fragmentation influences the performance of downstream processes in a mine, and as a …

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How to use Blast Design to Increase SAG Mill Tonnage

How to use Blast Design to Increase SAG Mill Tonnage

Maximising SAG mill throughput at Porgera gold mine by optimising blast fragmentation

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maximizing throughput on sag mill - MC World

maximizing throughput on sag mill - MC World

comminution cycle allows engineers to manage blast design to produce fragmentation in the ROM ore most suitable to optimise downstream unit processes to improve mine site productivity and profits. Split-Online® systems have measured PSD of rocks on conveyors from the primary crusher to the SAG mill for over 20 years.

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Influence of blasting on the size distribution and ...

Influence of blasting on the size distribution and ...

Since the 1990s, ‘mine-to-mill’ studies have evaluated the impact of blast fragmentation on downstream plant throughput. This was because crushing and grinding circuits (in particular, SAG mills) are sensitive to feed size and the amount of fines generated from blasting. Significant gains in grinding circuit efficiency could be achieved by controlling and optimising blast fragmentation.

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Achieving and sustaining productivity benefits through a ...

Achieving and sustaining productivity benefits through a ...

good fragmentation, and considerable reduction of oversize12. 3.3 Highland Valley Copper, Logan Lake, B. C., Canada, grinding mill performance Highland Valley Copper is using on-line monitoring of ore size, and combining it with ore hardness tracking to predict SAG (Semi-autogenous grinding) mill performance10. Figure 6 shows a typical image,

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sag mill installation handbook

sag mill installation handbook

KSimBlast, blast design software; Kuz-Ram Fragmentation Model to predict the particle size distribution of the blast in the stockpile; Split-Online or other image analysis of the particle size distribution at the truck tip to the primary crusher and on the conveyors from the primary crusher to the SAG mill feed

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(PDF) Blast fragmentation for maximizing the SAG mill ...

(PDF) Blast fragmentation for maximizing the SAG mill ...

Blast fragmentation measurements in open pits Posted by John on 31st August 2017 David Varcoe, Principal Mining Engineer of AMC Consultants notes a recent project in which AMC was involved that required, amongst other activities, a review of options to measure blast fragmentation in an operating open pit mining environment.

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(PDF) Maximising SAG mill throughput at Porgera gold mine ...

(PDF) Maximising SAG mill throughput at Porgera gold mine ...

Blast fragmentation for maximising the sag mill throughput at Porgera Gold Mine. Proceedings of the Twenty-Seventh Annual Conference on Explosives and Blasting Technique, 1(1 ), 383-399. • Park, J., Compan, G., & Kim, k.

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Esen Mining Consulting | Home

Esen Mining Consulting | Home

New SAG processing mill requires very specific fragmentation size to maximize output. Conventional mill also benefits from small, consistent particle size. Great depth of mine means steeper slopes, which affect haul truck efficiency. A key geological challenge is the lack of stability in

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MODELLING FINES IN BLAST FRAGMENTATION AND ITS …

MODELLING FINES IN BLAST FRAGMENTATION AND ITS …

Online Fragmentation Analysis: Achievements in the Mining Industry N. H. Maerz, Rock Mechanics and Explosives Research Center, University of Missouri-Rolla, MO, USA Abstract Size analysis of fragmentation based on optical imaging systems such as WipFrag has been available for some time now. Studies and industry experience has shown that the

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Break it Better - Mine Blast Fragmentation - International ...

Break it Better - Mine Blast Fragmentation - International ...

Blast fragmentation for maximizing the SAG mill . Out of this blasted material 10-15% cannot be sold, being too fine i.e. smaller than 4 mm. In favour of fines to benefit the SAG (Semi Autogenous grinding) mill throughput, Grundstrom et al. (2001) state that the blast fragmentation affects mill throughput and finer ROM (Run of Mine) from modified blasts increased the mill throughput substantially.

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Blast fragmentation measurements in open pits ...

Blast fragmentation measurements in open pits ...

A Mine to Mill program commenced at the Batu Hijau site in 2001. The objectives of the mine to mill program were to (1) increase mill throughput by improving blast fragmentation and (2) improve production forecasting based on an improved understanding of the Geo-metallurgical characteristics of …

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Controlling fragmentation - Orica Mining Services

Controlling fragmentation - Orica Mining Services

Esen Mining Consulting Pty Ltd is a global mining consultancy specialising in Drill-to-Mill plant optimisation, blast fragmentation measurement and modelling, final wall blasting, mining equipment productivity assessment and improvement, cast blasting, coal loss, vibration / airblast control, innovative blast designs, blast auditing, risk assessment and project management.

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Increased production and energy efficiency for optimized ...

Increased production and energy efficiency for optimized ...

AMC Consultants was recently involved in a project that required, amongst other activities, a review of options to measure blast fragmentation in an operating open pit mining environment. Blast fragmentation measurement is usually depicted as a particle size distribution (PSD) curve relationship of percentage of rock passing verses rock size as shown below.

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Optimization Process at Antamina Boosts Production and ...

Optimization Process at Antamina Boosts Production and ...

Blast fragmentation for maximising the SAG mill throughput at Porgera goldmine By C. Grundstrom, S. Kanchibotla, A. Jankovic and D. M. Thornton Topics: 290701 Mining Engineering, E1, 640203 Precious (noble) metal ores

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Maximising SAG mill throughput at Porgera gold mine by ...

Maximising SAG mill throughput at Porgera gold mine by ...

 · Increased production and energy efficiency for optimized Antamina mine. has assisted Compañía Minera Antamina to increase its mill throughput by integrating and optimizing blast fragmentation, crushing and grinding operations.

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Case Study Maximising SAC MIK Throughput through …

Case Study Maximising SAC MIK Throughput through …

Request PDF | On , M. Lam and others published Maximising SAG mill throughput at Porgera gold mine by optimising blast fragmentation | Find, read and …

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11th International Symposium on Rock Fragmentation by ...

11th International Symposium on Rock Fragmentation by ...

Two antennas were installed at Antamina—one on the primary crusher product belt and another on the SAG mill feed belt—thus allowing performance in the crushing and milling circuit to be linked to the ore characteristics and blast fragmentation measured during the audited blasts.

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BATU HIJAU MILL THROUGHPUT OPTIMIZATION: MILLING …

BATU HIJAU MILL THROUGHPUT OPTIMIZATION: MILLING …

 · Control and Prediction of Blast Fragmentation and It's effect on the Comminution Process 1. TECHNICAL REPORT Control and Prediction of Blast Fragmentation and its Impact on Comminution JAMES DUNF723 Abstract Blasting is a fundamental part of the comminution process in mining.

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WipFrag System II – Online Fragmentation Analysis

WipFrag System II – Online Fragmentation Analysis

Fragmentation from fresh primary hard ores was also expected to be much coarser than the soft oxide or es. The feasibility design throughput of the mill with hard primary ores was assumed to be around 400 tph compared to 700 tph with oxide ore. Figure 1 below is a snapshot of throughput changes in the SAG mill while feeding the fresh hard ore.

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Benchmarking: SAG Mill Power Draw Models - SAGMILLING.COM

Benchmarking: SAG Mill Power Draw Models - SAGMILLING.COM

• North Mill Ore & South Mill Ore: • 18’-24’ stemming • Goal is generate fines to maximize throughput and for the SAG mill to generate coarse oversize in the stem zone for “grinding media.” • Different philosophy – usually to enhance throughput is maximize fragmentation.

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Investigation of Crushed Aggregate as Stemming Material in ...

Investigation of Crushed Aggregate as Stemming Material in ...

facility with primary crushing, SAG and ball milling including a recycle pebble crusher. The principal objective of the p2p programme is to increase mill throughput, primarily through increased blast fragmentation, but it must be stressed that this must not be at the expense of grade control, thus it is

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MINING OPTIMIZATION

MINING OPTIMIZATION

Publications. Relevant publications from Dr Steve Morrell in the field of comminution. ... Exploring the effect of blast design on sag mill throughput at KCGM. Mine to Mill 1998 Conference, Brisbane, pp. 56. KANCHIBOTLA, S. S., VALERY, W. and MORRELL, S. (1999). Modelling fines in blast fragmentation and its impact on crushing and grinding ...

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Blast fragmentation for maximizing the SAG mill throughput ...

Blast fragmentation for maximizing the SAG mill throughput ...

Blast Fragmentation for Maximising the Sag Mill Throughput at ... significant improvements in sag mill throughput can be achieved by optimizing the blast ... The mine to mill blast optimisation project has been under way since... Chat Online. Optimize Mining and Processing Rates - DJB Consultants.

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sag mill optimisation

sag mill optimisation

– an improved or at least maintained fragmentation with a lower explosives consumption. The focus in this review is on the energy expenditure and the influence of blasting on the size distribution and properties of muckpile fragments. Grinding is by far the most energy intensive stage of …

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Photoanalysis - Wikipedia

Photoanalysis - Wikipedia

Break it Better – Mine Blast Fragmentation. ... being able to adjust the SAG mill feed based on realtime data has allowed operators to optimise the size of material going into the SAG. This, in return, has increased the throughput at many operations worldwide, and has reduced liner wear significantly. ... The system is currently being used by ...

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Blast optimisation of hard ores in the Phu Kham open-pit

Blast optimisation of hard ores in the Phu Kham open-pit

Photoanalysis is being used on SAG mills worldwide to control the size of rock being crushed. Companies are using this technology to determine the size of particles being processed in the SAG Mill. Having oversize material entering the SAG mill makes an operation less efficient, costing companies money in electrical and maintenance costs.

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Shovel-based Fragmentation Analysis of ROM to Improve ...

Shovel-based Fragmentation Analysis of ROM to Improve ...

SAG mill throughput is often a bottleneck in increasing metal productivity. Improved size distribution control in the mill feed can be used to increase mill production. This can be accomplished by controlling blast fragmentation as a function of energy input and rock characteristics. Such an approach requires the integration of rock fragmentation and comminution modeling. The optimal mill feed ...

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Influence of explosive energy on the strength ... - DeepDyve

Influence of explosive energy on the strength ... - DeepDyve

- identify most cost effective way to improve mill throughput of harder ores • ‘Value for money’ criteria is a cost/benefit analysis that weighed-up the additional operating cost to implement the trial against the improvement in SAG mill tph • Each trial single-sourced through mill for 4 – 6 hour and mill …

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