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Development of 3D rock fragmentation measurement

2020-3-3  ABSTRACT. Run-of-mine fragmentation is an important aspect of mine productivity optimisation, as it affects all mine-to-mill processes. In this study, a 3D rock fragmentation measurement (3DFM) system is proposed that can surmount the limitations of conventional 2D photo-based rock fragmentation measurement methods.

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Development of 3D rock fragmentation measurement

2020-3-3  Run-of-mine fragmentation is an important aspect of mine productivity optimisation, as it affects all mine-to-mill processes. In this study, a 3D rock fragmentation measurement (3DFM) system is proposed that can surmount the limitations of conventional 2D photo-based rock fragmentation measurement methods.

Get Price

Development of 3D rock fragmentation measurement

ABSTRACT Run-of-mine fragmentation is an important aspect of mine productivity optimisation, as it affects all mine-to-mill processes. In this study, a 3D rock fragmentation measurement (3DFM) system is proposed that can surmount the limitations of conventional 2D photo-based rock fragmentation measurement methods. To validate the proposed 3DFM performance, a laboratory-based comparison

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Prediction of Rock Fragmentation Using a Gamma

A blast fragmentation model is developed based on the gamma function to describe the run-of-mine fragmentation distribution. The model presented is aimed to benefit from simplicity in application and also to be efficient in description of the fine to coarse part of the blast rock fragments. In fact, the gamma based model (KC-KUM), gives a unit distribution curve, which is made up of two ...

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Prediction of Rock Fragmentation in Open Pit Mines

2021-5-10  Prediction of Rock Fragmentation in Open Pit Mines, using Neural Network Analysis Kazem Oraee1, Bahareh Asi2 Loading and transport costs constitute up to 50% of the total operational costs in open pit mines. Fragmentation of the rock after blasting is an important determinant of the cost associated with these two components of mine development.

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Rock Fragmentation by Blasting - Orica Mining Services

The fragmentation of rock is fundamental to mining. It is the first preparatory stage in the extraction process – making rock small enough and loose enough to be efficiently excavated. But this simple statement underestimates how important this activity is for the whole mining operation. By optimising rock fragmentation

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FRAGMENTATION Better blasts - Mine Safety and Health ...

2019-8-11  pit polymetallic mine in Mexico. “Results from the application of this technique have shown significant improvement in run-of-mine fragmentation, with subsequent downstream productivity improvement indicated.” The authors make recommendations to steer ongoing research, development and application of this technique: n The ongoing application ...

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Rock fragmentation control in opencast blasting ...

2016-4-1  1. Introduction. Rock fragmentation distribution influences a range of mining and milling processes including load and haul rates, crushing and grinding performance and ore recovery in beneficiation processes (Michaud et al., 1997).In opencast mining, where blasting is employed for excavation, the overall cost effectiveness of the production operations is compatible with optimization

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Optimization of rock fragmentation in bench blasting

1990-6-18  Optimization of rock fragmentation in bench blasting N. Mojtabai; N. Mojtabai New Mexico Institute of Mining Technology. Search for other works by this author on: ... Designed as a low cost operation, dump leaching is carried out on run-of-mine ore without further size reduction. Since successful dump leaching requires a well graded ore pad ...

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Effects of Rock Mass Conditions and Blasting Standard on ...

2015-5-18  Mine A Face 3 Mine A Face 4 Mine B Face 1 Mine B Face 2 Mine C Face 1 Mine D Face 1 Mine D Face 2 Mine D Face 3 Xp 50 (cm) 41.8 19.8 32.0 20.3 25.4 43.5 48.7 51.5 59.6 73.5 powder factor are different at different test sites. Here, it is assumed that the crack condition of rock mass has an obvious impact on the size of fragmented rock.

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Development of 3D rock fragmentation measurement

ABSTRACT Run-of-mine fragmentation is an important aspect of mine productivity optimisation, as it affects all mine-to-mill processes. In this study, a 3D rock fragmentation measurement (3DFM) system is proposed that can surmount the limitations of conventional 2D photo-based rock fragmentation measurement methods. To validate the proposed 3DFM performance, a laboratory-based comparison

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The relationship between fragmentation in mining

1995-11-1  The calculated coarser run of mine distribution is also shown in Figure 4. T- (II ~e 100 10 I-I- .01 - mu # mIt # mm Rom fine blast Rom coarse blast .1 1 10 100 1000 10000 Size (mm) Fig.4 Run of mine fragmentation from an open pit Primary Crusher Simulations All crushing and grinding simulations were run on the JKSimMet process simulator.

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Measuring blast fragmentation at Esperanza mine

2021-3-29  Image analysis as a technique for fragmentation measurement of rock piles has been the subject of research since the 1980s, and to date, run of mine (ROM) fragmentation optimisation studies have primarily relied on particle size measurement using photographic-based 2D imaging systems. Disadvantages of 2D imaging systems include particle delineation errors because of variable lighting

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Prediction of rock fragmentation using the Kuznetsov ...

2021-4-14  fragmentation at limestone mine sites, despite the availability of other advanced prediction models. It is also a valuable instrument for pre-surveying the impact of varying certain parameters of a blast plan. Keywords blasting, rock fragmentation, modelling, prediction. Introduction

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The effects of short delay times on rock fragmentation in ...

2020-10-28  Rock fragmentation is a fundamental goal of bench blasting where the most effective blasts can only be achieved through fragmentation optimization. The meaning of optimized fragmentation is site dependent, as there is no single fragment size that is the most cost effective for all mine sites, loading equipment, and processing facilities.

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Drilling down to the details of fragmentation - Mine

2021-5-25  Measuring fragmentation. In the early to mid-1990s, Split Engineering developed technology and algorithms to measure online PSD at every stage from the mine to the mill: Split-Online.7 JKMRC found this to be a key tool in developing mine-to-mill strategies and validated the accuracy of the technology.8 The technology was first installed above conveyor belts and at the primary crusher truck ...

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Determination of optimal fragmentation curves for a ...

2019-8-8  The orebody and rock conditions at every mine are unique, therefore, each mine should have tailored solutions to allow for optimal orebody extraction. Fragmentation control is a challenging task since there are many parameters to take into account, which include rock structure, burden, spacing, hole diameter, bench height, and initiation timing.

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Optimization of rock fragmentation in bench blasting

1990-6-18  Design of blasts in a copper porphyry ore body were altered to give powder factors between 0.26 and 0.71 kg/m 3 in three different types of rock. The specific surface area, defined as muckpile particle surface area per unit volume of blasted rock, was measured by photoanalysis and correlated closely with powder factor and rock type.

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Productivity improvement of a Ghanaian open-pit

After a statistical analysis of the available data on post-blast fragmentation, it was observed that the desired run of mine (ROM) P80 target of 350 mm is rarely met. It was concluded that the "Kuz-Ram" model used to predict the fragment size distribution is incorrectly applied, which resulted in a planned blast design that produces a coarse ...

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Blast Optimization and Ore Fragmentation Modeling

2018-9-19  Modelling Blast Fragmentation. The common denominator in all models of fragmentation is the influence of rock properties and geologic structures within the blast. A simulation approach which attempts to accurately replicate the fragmentation process will necessarily be complex and difficult to apply to a wide variety of geologically dissimilar ...

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Measuring blast fragmentation at Esperanza mine

2021-3-29  Image analysis as a technique for fragmentation measurement of rock piles has been the subject of research since the 1980s, and to date, run of mine (ROM) fragmentation optimisation studies have primarily relied on particle size measurement using photographic-based 2D imaging systems. Disadvantages of 2D imaging systems include particle delineation errors because of variable lighting

Get Price

FRAGMENTATION Better blasts - Mine Safety and Health ...

2019-8-11  pit polymetallic mine in Mexico. “Results from the application of this technique have shown significant improvement in run-of-mine fragmentation, with subsequent downstream productivity improvement indicated.” The authors make recommendations to steer ongoing research, development and application of this technique: n The ongoing application ...

Get Price

Rock Fragmentation Size Analysis Systems - Split

Fragmentation Profile: Size at the muckpile influences dig rates, shovel maintenance and overall production in many different ways. Get on the path to understanding what is happening at the muckpile. Run of Mine: Perhaps the best and only feasible place to measure, automatically and online, the post-blast fragmentation before it hits the leach pad.

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Prediction of rock fragmentation using the Kuznetsov ...

2021-4-14  fragmentation at limestone mine sites, despite the availability of other advanced prediction models. It is also a valuable instrument for pre-surveying the impact of varying certain parameters of a blast plan. Keywords blasting, rock fragmentation, modelling, prediction. Introduction

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The effects of short delay times on rock fragmentation in ...

2020-10-28  Rock fragmentation is a fundamental goal of bench blasting where the most effective blasts can only be achieved through fragmentation optimization. The meaning of optimized fragmentation is site dependent, as there is no single fragment size that is the most cost effective for all mine sites, loading equipment, and processing facilities.

Get Price

Powder Factor Selection for Improved Rock

2018-10-21  Rock Fragmentation at AngloGold Ashanti Iduapriem Limited Eme Precious, Prof Sulemana Al-Hassan and Prof Richard K. Amankwah . Mining Engineering Department, University of Mines and Technology . Eme, P., Alhassan, S. and Amankwah, R. K. (2018), Powder Factor Selection for Improved Rock Fragmentation at AngloGold Ashanti Iduapriem Mine. Abstract

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Drilling down to the details of fragmentation - Mine

2021-5-25  Measuring fragmentation. In the early to mid-1990s, Split Engineering developed technology and algorithms to measure online PSD at every stage from the mine to the mill: Split-Online.7 JKMRC found this to be a key tool in developing mine-to-mill strategies and validated the accuracy of the technology.8 The technology was first installed above conveyor belts and at the primary crusher truck ...

Get Price

Determination of optimal fragmentation curves for a ...

2019-8-8  The orebody and rock conditions at every mine are unique, therefore, each mine should have tailored solutions to allow for optimal orebody extraction. Fragmentation control is a challenging task since there are many parameters to take into account, which include rock structure, burden, spacing, hole diameter, bench height, and initiation timing.

Get Price

Optimization of rock fragmentation in bench blasting

1990-6-18  Design of blasts in a copper porphyry ore body were altered to give powder factors between 0.26 and 0.71 kg/m 3 in three different types of rock. The specific surface area, defined as muckpile particle surface area per unit volume of blasted rock, was measured by photoanalysis and correlated closely with powder factor and rock type.

Get Price

Blast Optimization and Ore Fragmentation Modeling

2018-9-19  Modelling Blast Fragmentation. The common denominator in all models of fragmentation is the influence of rock properties and geologic structures within the blast. A simulation approach which attempts to accurately replicate the fragmentation process will necessarily be complex and difficult to apply to a wide variety of geologically dissimilar ...

Get Price

Measuring blast fragmentation at Esperanza mine using high ...

2021-3-29  Image analysis as a technique for fragmentation measurement of rock piles has been the subject of research since the 1980s, and to date, run of mine (ROM) fragmentation optimisation studies have primarily relied on particle size measurement using photographic-based 2D imaging systems. Disadvantages of 2D imaging systems include particle delineation errors because of variable lighting

Get Price

FRAGMENTATION Better blasts - Mine Safety and Health ...

2019-8-11  pit polymetallic mine in Mexico. “Results from the application of this technique have shown significant improvement in run-of-mine fragmentation, with subsequent downstream productivity improvement indicated.” The authors make recommendations to steer ongoing research, development and application of this technique: n The ongoing application ...

Get Price

Optimising blast fragmentation potential - Global Mining ...

showed a 16% decrease in the 80% passing size for run of mine (ROM) fragmentation from the preconditioned benches, as well as an increase in fines content from 35.4% to 39.0%. Fines content in the SAG feed also increased by 8%. Furthermore, improved and consistent fragmentation has led to a better particle size distribution in the SAG mill

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Fragmentation Analysis – Eloranta Associates

Fixed installations for run-of-mine size are typically mounted to capture images as rock is dumped into the primary crusher. Fragmentation analysis services go beyond simply collecting data. Modeling software allows engineers to anticipate outcomes from changes in pattern designs.

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Distribution Analysis of Rock Fragments Size Based on the ...

2019-8-24  distribution of rock fragments at various stages of rock breaking in the mining and processing of mineral resources. The desktop version of SPLIT refers to the user-assisted version of the program that can be run by mine engineers or technicians at on-site locations. The desktop SPLIT system consists of the SPLIT software, computer,

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volume 14 - mining.ua

2021-2-5  The particle size distribution obtained from Microsoft-paint imaging analysis shows that the mean run-off-mine sizes are 0.6, 0.58, 0.42, 0.36 and 0.54 m, and the average boulder sizes of fragmented particles are 1.19, 1.11, 0.93, 0.81 and 1.03 m, for blast test 1, blast test 2, blast test 3, blast test 4 and blast test 5 respectively.

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Drilling down to the details of fragmentation - Mine Safety

2021-5-25  Measuring fragmentation. In the early to mid-1990s, Split Engineering developed technology and algorithms to measure online PSD at every stage from the mine to the mill: Split-Online.7 JKMRC found this to be a key tool in developing mine-to-mill strategies and validated the accuracy of the technology.8 The technology was first installed above conveyor belts and at the primary crusher truck ...

Get Price

Distribution Analysis of Rock Fragments Size Based on the ...

Blasting is the most productive excavation method in hard rock mining. In quarries, to remove the mother rock from in-situ and crush into the desired size is realized by bench blasting method. The latter more used in our country because it is a very profitable method. In the quarry of Jebel Medjounes in Ain El-Kebira eastherne Algeria (Setif), the fragmentation of the rocks is done by blasting.

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2020g - Subdrill - The Underutilised Blasting Parameter

fragmentation in the stemming region, resulting in poor crusher throughput due to bridging. To overcome the poor fragmentation in the top of the bench, longer than conventional subdrill was used to precondition the top third of the bench. The technique significantly improved the run of mine fragmentation

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Blast Optimization and Ore Fragmentation Modeling

2018-9-19  Modelling Blast Fragmentation. The common denominator in all models of fragmentation is the influence of rock properties and geologic structures within the blast. A simulation approach which attempts to accurately replicate the fragmentation process will necessarily be complex and difficult to apply to a wide variety of geologically dissimilar ...

Get Price