optimization of blast output in a limestone quarry

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  • Determination of specific charge minimizing total unit ...

    2014-10-17· In this study, certain blast tests have been carried out in three different limestone quarries. Unit costs of explosives, drilling, loading, hauling, crushing, and boulder crushing at each site were determined, and specific charge values minimizing total unit cost of the operations were separately determined for each worksite.

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  • Optimizing mining operations | T&D World

    2013-05-20· Quarries in this area mine the rock, crush it into various sizes and send it to areas that cannot mine it themselves locally. The vibrations produced by quarry blasting have been a source of concern and frustration for neighboring communities as long as people have occupied homes or businesses near these active aggregate producing operations.

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  • Controlling the Adverse Effects of Blasting

    The horizontal distance from the seismograph to the blast should be known to at least two significant digits. For example, a blast within 1000 feet would be measured to the nearest tens of feet and a blast within 10,000 feet would be measured to the nearest hundreds of feet.

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  • Analysis of parameters of ground vibration produced from ...

    The aim of this study is to predict peak particle velocity level at a limestone quarry located in Istanbul, Turkey. The ground vibration components were measured for 73 blast events during the bench blast optimization studies during a long period.

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  • DETERMINATION OF BENCH BLAST DESIGN PARAMETERS FOR ...

    In surface mining drilling and blasting are the major unit operations and have a big effect on the materials fragmentation, safety and total production cost. Drilling and blasting cost in any quarry can reach 25% of the total production cost.

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  • quarry and mix optimization - Page 1 of 4

    2009-07-10· Re: quarry and mix optimization. Okay, thanks Electron1539, I was laboratory manager in a quarry similar to your situation some years ago. At the time we tested our limestone by acid titration from grab samples taken from the stacker belt at 20 minute intervals and analysed a .

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  • Design of a Predictive Model of Rock Breakage by Blasting ...

    an output layer that includes the sigmoid activation function with symmetrical properties for optimal model convergence. The ANN model was fed-back in its learning with training data until it becomes perfected, and due to the experimental results obtained, it is a valid prediction option that can be used in future blasting of ore deposits with similar characteristics using the same ...

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  • Design and simulation of blasts RIOBLAST

    2020-09-02· RIOBLAST is a blast design and simulation software package, developed by MAXAM for drilling and blasting engineers and artillery experts. Its simple, intuitive interface can import actual data from the topography of the terrain/bench and display them in a 3D environment, and also import and superimpose georeferenced satellite photographs.

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  • Blasting and Fragmentation Journal - International Society ...

    Two tri-axial accelerometer stations, consisting of high frequency and high-amplitude (20 kHz, 100g) sensors, located within ~100m of the blast, but at two different bench levels, were used to monitor production blasts in a limestone quarry. The production blast consisted of double-decked explosive loads in 125 mm (5 in) diameter holes, with an inter-deck delay of 42 ms, .

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  • DETERMINATION OF BENCH BLAST DESIGN PARAMETERS FOR ...

    In surface mining drilling and blasting are the major unit operations and have a big effect on the materials fragmentation, safety and total production cost. Drilling and blasting cost in any quarry can reach 25% of the total production cost.

    Get Price
  • Quarrying Process And Quarry Products

    Fine material and dust produced by the blast, along with any remaining subsoil or weathered rock from the top of the quarry face, drops through the bars onto a separate conveyor belt and onto a stockpile. This screened material is called scalpings and is used as rock fill.

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  • EVALUATING AND IMPROVING BLASTING RESULTS AT TOURAH ...

    Thirty full scale production blasts using NONEL system have been performed at the limestone quarry of Tourah Cement Company. In these blasts we have used multi-deck charging system in the blast hole to decrease the level of ground vibrations resulting from the blasts. That is because there are some historical caves near to the quarry.

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  • Determination of specific charge minimizing total unit ...

    2014-10-17· Determination of specific charge value that will minimize total unit costs of the open pit quarry operations will ensure the performance of blasting process in the most economical manner. In this study, certain blast tests have been carried out in three different limestone quarries. Unit costs of explosives, drilling, loading, hauling, crushing, and boulder crushing at each site were ...

    Get Price
  • Designing Blast Patterns Using Empirical Formulas

    blasting in limestone and dolomite quarries. The terminology used here is that of the Dictionary of Geological Terms prepared by the American Geological Institute (!). Bedding is a collective term signifying existence of beds. A bed is the smallest division of a stratified series and is marked by a reasonab.ly well­ defined divisional plane separating its neighbors above and below. 4 Jointed ...

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  • Blast optimization in quarries - researchgate

    A proper planning of quarry excavation is based on an appropriate cut and an optimized blast design. A safe cut angle ensures bench stability as well .

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  • Design of a Predictive Model of Rock Breakage by Blasting ...

    an output layer that includes the sigmoid activation function with symmetrical properties for optimal model convergence. The ANN model was fed-back in its learning with training data until it becomes perfected, and due to the experimental results obtained, it is a valid prediction option that can be used in future blasting of ore deposits with similar characteristics using the same ...

    Get Price
  • Symmetry | Free Full-Text | Design of a Predictive Model ...

    Then in the publication of Dhekne et al. [ 15] developed an ANN model to estimate the number of resulting rocks from explosions in limestone quarries at one of Indian Province. In their work they taken as a database three hundred explosions carried out in 4 limestone quarries that have a similar geotechnical classification.

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  • quarry and mix optimization - Page 1 of 4

    2009-07-10· Re: quarry and mix optimization. Okay, thanks Electron1539, I was laboratory manager in a quarry similar to your situation some years ago. At the time we tested our limestone by acid titration from grab samples taken from the stacker belt at 20 minute intervals and analysed a .

    Get Price
  • ‪Shehu, Abdulazeez Shaib‬ - ‪Google Scholar‬

    PRELIMINARY ASSESSMENT OF THE EFFECTS OF BLAST DESIGN FACTORS ON FRAGMENTATION AT LAFARGE KANTHAN LIMESTONE QUARRY, CHEMOR, PERAK. SA Shehu, MH Mohd Hashim, NAH Awang Kechik . ASEAN Engineering Journal 10 (2), 72, 2020. 2020: Comparative study of WipFrag image analysis and Kuz-Ram empirical model in granite aggregate quarry and their application for blast .

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  • Optimization of Blasting Parameters in opencast Mines

    Optimization of blast is dependent on a host of complex factors related to the rock, explosive, initiation, drill-hole parameters and their layout. The present work is a step in the direction of developing a suitable blast model, with simple methodologies which can be adapted by the mining industry to achieve better blasting results. 4 CHAPTER 2

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  • Controlling the Adverse Effects of Blasting

    Blast vibrations travel away from a blast in all directions. At 5,000 to 25,000 feet per second, ground vibrations for all practical purposes arrive immediately at the home at the detonation of the first hole. Airblast travels much slower at 1,100 feet per second. Ground and air vibrations are measured using a blasting seismograph.

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  • Analysis of parameters of ground vibration produced from ...

    The aim of this study is to predict peak particle velocity level at a limestone quarry located in Istanbul, Turkey. The ground vibration components were measured for 73 blast events during the bench blast optimization studies during a long period.

    Get Price
  • Determination of specific charge minimizing total unit ...

    2014-10-17· In this study, certain blast tests have been carried out in three different limestone quarries. Unit costs of explosives, drilling, loading, hauling, crushing, and boulder crushing at each site were determined, and specific charge values minimizing total unit cost of the operations were separately determined for each worksite.

    Get Price
  • Re: quarry and mix optimization - Page 2 of 4

    2009-07-10· Re: quarry and mix optimization. Dear experts, I am working on the project,,crossbelt online analizer at the limestone quarry". Quarry is characterised with unstable Cao content of limestone.Installation of analizer will provide supply of limestone with stable chemical composition to the plant,but I am intrested in what will be profit of this ...

    Get Price
  • Risk Assessment and Prediction of Flyrock Distance by ...

    2016-05-25· Flyrock is considered as one of the main causes of human injury, fatalities, and structural damage among all undesirable environmental impacts of blasting. Therefore, it seems that the proper prediction/simulation of flyrock is essential, especially in order to determine blast safety area. If proper control measures are taken, then the flyrock distance can be controlled, and, in return, the ...

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  • Optimization in the quarry, Norwegians show the way

    Norwegian drillers in the Akselberg limestone quarry. The team has optimized the production process through precision drilling and blasting to achieve parallel holes. Optimization in the quarries, Norwegians show the way 2015 Jun 10

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  • Quarry optimisation good fragmentation less fines

    Therefore, quarry managers have few man-hour to do trial-and-error approaches to mine-to-mill optimization. Apart from budget and management restrictions, quarry blasters and engineers must face a very delicate economical equilibrium between achieving maximum fragmentation at the blast while minimizing the fines portion.

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  • Re: quarry and mix optimization - Page 2 of 4

    2009-07-10· Re: quarry and mix optimization. Dear experts, I am working on the project,,crossbelt online analizer at the limestone quarry". Quarry is characterised with unstable Cao content of limestone.Installation of analizer will provide supply of limestone with stable chemical composition to the plant,but I am intrested in what will be profit of this ...

    Get Price
  • quarry blasting of limestone in cement factory

    quarry blasting of limestone in cement factory stemming plugs, several blast tests were organized on a limestone quarry that provides raw material to a cement factory around Izmir, Turkey. One important aspect expected from blasting is the proper fragmentation of the limestone, since the pile is fed directly to the primary crusher of the cement factory.

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  • Stone Industry

    Using an optimization study that covered a 20-month period in 2014 and 2015, the client found a high percentage of fines in the blasted stone. The client called in DynoConsult to help study the reasons and find a cost effective solution.

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