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  • 11th International Symposium On Rock Fragmentation

    11th International Symposium On Rock Fragmentation

    Fragmentation of muckpiles was measured using the SPLIT photographic method Ore from each flitch was campaigned through t he mill for a minimum of 24 hrs and belt cuts were taken from primary crusher product and sieved to estimate feed size distribution Fragmentation analysis from muckpile photos

  • Velocity Of Detonation Measurement And Fragmentation

    Velocity Of Detonation Measurement And Fragmentation

    In holes the measurement of the velocity of detonation VOD helps in paring and evaluating relative performance of explosives In this paper a blast performance assessment was conducted based on the results obtained from the steady state VOD measurement of emulsion explosives HEF100 and degree of blast fragmentation conducted on an open pit blast

  • Blasting Drilling Procedures Need To Be Done Professionally

    Blasting Drilling Procedures Need To Be Done Professionally

    Mar 21 2017If fragmentation is a key output to the mine which it normally is the Wipware systems are a great way to accurately measure the fragmentation I have used this at many mines to help identify fragmentation This involves taking a picture of the muckpile in several locations and using the software to determine the fragmentation of the muckpile

  • VARISTEM Sur La Fragmentation De La Roche

    VARISTEM Sur La Fragmentation De La Roche

    Sur la fragmentation de la roche which resulted in a 25 tonshour increase of limestone through the primary crusher DBA did a puter analysis of every truckload of rock taken to the primary crusher This was a 100 muck pile study and did not rely on carefully selected biased photos of a muck pile

  • Improving Collar Zone Fragmentation By Top AirDeck

    Improving Collar Zone Fragmentation By Top AirDeck

    Sep 30 2016Improving Collar Zone Fragmentation by Top AirDeck Blasting Technique The overall blast results were satisfactory 443624 tonnes of blasted material from the block which represented 90 of the total muckpile material was within 900 mm size The overall muckpile blasted was well fragmented

  • INTEGRATION AND OPTIMISATION OF BLASTING

    INTEGRATION AND OPTIMISATION OF BLASTING

    Muckpile as well as haul trucks dumping at the primary crusher For measurements of crushing and grinding circuit performance surveys are performed to collect data on all the process streams

  • PDF Modelling Fines In Blast Fragmentation And Its

    PDF Modelling Fines In Blast Fragmentation And Its

    Generally the size distribution of ROM fragmentation is obtained from the images of blasted muckpiles In hard and massive rock blasting the surface of the muckpile is usually coarser because the rocks in this zone are usually generated from the stemming region and

  • Investigation Of Rock Blast Fragmentation Based On

    Investigation Of Rock Blast Fragmentation Based On

    Parameter on fragmentation is the in situ block size The in situ block size plays a major role in creating the mean fragment size of a muckpile Kim and Kemeny developed a model for rock fragmentation in which they demonstrated the insitu block size to be the most effective parameter on fragmentation 8 The proposed equation Eq

  • The Swebrec Function Linking Fragmentation By Blasting

    The Swebrec Function Linking Fragmentation By Blasting

    CRUSHING FRAGMENTATION Tr aditionally a quarry or mine produces rock on the ground for a plant to process An eye is kept on hauling and oversize with much less focus on the rest of the blasted fragmentsize distribution This is changed with the Minetomill or drilltomill approaches Still what blasting and crushing fragmentation or

  • ROCK FRAGMENTATIONROCK FRAGMENTATION

    ROCK FRAGMENTATIONROCK FRAGMENTATION

    At least in surface operations is the fragmentation and the profil f th k il Thi th t th f t tifile of the muck pile This means that the fragmentation together with the heave often are synonyms of the result In most types of blasting the fragmentation is the primary quality demand

  • FIRING PATTERNS AND ITS EFFECT ON MUCKPILE

    FIRING PATTERNS AND ITS EFFECT ON MUCKPILE

    For digging the muckpile should not be scattered to ensure a high fill factor It was observed that in case of coarser fragmentation muckpile profile was of dome shape and in case of finer fragmentation muckpile profile was spread over large area 21 This may be due to the inertia and interlocking effect of the coarse fragments

  • Managing Muckpile Fragmentation Workshop

    Managing Muckpile Fragmentation Workshop

    Managing Muckpile Fragmentation Workshop Scott G Giltner Outline Review of factors affecting fragmentation Burden Spacing Powder factor Delay time accuracy Fragmentation modeling Comminution or Breakage 60 80 100 Cum passing Insitu ROM Crusher Product 10000 0 20 40 01 1 10 100 1000Size mm Fragmentation Parameters Joint Spacing

  • Fragmentation Modelling And The Effects Of ROM

    Fragmentation Modelling And The Effects Of ROM

    The Key performance Index KPI is the Closed Side Setting CSS of the primary crusher If the ROM fragmentation is finer then there is a scope to minimize the CSS to deliver finer SAG feed It is important to highlight that any mine tomill optimization work focuses on feed size to the SAG Mills Dance et al

  • Impact Of Blast Fragmentation On Crushing And Screening

    Impact Of Blast Fragmentation On Crushing And Screening

    This paper presents the results of studies into the impact of muckpile fragmentation on downstream crushing and screening operations and includes measurements of primary blast oversize and muckpile fragmentation together with measurements of size distribution circulating loads and flakiness for various process streams throughout a quarry

  • Fragmentation Crusher Rock

    Fragmentation Crusher Rock

    Quantifying blast fragmentation is useful for measuring blasting performance to determine if the blast has effectively broken the rock mass to enable it to be loaded and that the ore oversize does not exceed the crusher open size Improved fragmentation and consistent fragmentation across a blast profile will generally support higher

  • Excavation Flashcards Quizlet

    Excavation Flashcards Quizlet

    Involves splitting along the planned excavation limits The boreholes are detonated after the main production blast The aim is to slash or trim excess material from the walls and to improve their stability Boreholes are drilled in a line along the planned excavation limits loaded lightly and

  • WipWare Fragmentation Analysis Software And Hardware

    WipWare Fragmentation Analysis Software And Hardware

    Automatic realtime fragmentation analysis WipWares innovative image conveyor and vehicle material analysis software monitors particle sizes in the field and laboratory helping you make quantitative decisions increase productivity reduce downtime and lower operating costs

  • Measurement Of Size Distribution Of Blasted Rock Using

    Measurement Of Size Distribution Of Blasted Rock Using

    Muckpile Therefore reliable evaluation of fragmentation is a critical mining problem1 Production of finer fragments in blasting operation reduces the workload of primary crushers therefore increasing the crusher efficiency and reducing the crushing cost Also crushing rate per hour will increase 2

  • V117n4a2 An Investigation Into The Fragmentation Of

    V117n4a2 An Investigation Into The Fragmentation Of

    Crusher This resulted in downtime in the daily operations and consequent production and revenue losses The crusher product should have a top size of 50 mm A blast fragmentation of 50 mm would improve the downstream operations and the crusher throughput An investigation into the blasting practises was carried out to assess whether the

  • PDF Blast Fragmentation For Maximizing The SAG Mill

    PDF Blast Fragmentation For Maximizing The SAG Mill

    The higher than the designed stemming resulted in some blocky fragmentation in the collar region but the fragmentation inside the muckpile was generally fine The hornblende diorite ore from this blast was sent to the mill for further processing However during these trials the pebble crusher at

  • Influence Of Density Of Emulsion Explosives On Its

    Influence Of Density Of Emulsion Explosives On Its

    Detonation of emulsion explosives on fragmentation of blasted muckpile over a range of densities The density of explosives was varied from 06 to 11 gcc which resulted in the variation of detonation velocity from 3262 to 4624 ms Keywords Blasted muckpile detonation velocity emul

  • Momentum WipWare Fragmentation Analysis Software

    Momentum WipWare Fragmentation Analysis Software

    Monitor measure and manage material on conveyor belts Optimize SAG throughput evaluate crusher performance detect broken screens Momentum is a pletely automated analysis system for measuring the size distribution of unconsolidated material on conveyor belts in real time without disrupting production It can also measure particle size shape volume and colour on LHD HD and

  • Rock Fragmentation By Blasting Orica Mining Services

    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

  • Effects Of Fragmentation On The Crusher

    Effects Of Fragmentation On The Crusher

    Effects of fragmentation on the crusher modelling fines in blast fragmentation and its zenith particularly important as this fraction has a significant effect on mill throughput digging efficiency crusher throughput that depend on fragmentation

  • SplitTruckCam System Rock Fragmentation Size Image

    SplitTruckCam System Rock Fragmentation Size Image

    SplitTruckCam is the standard for automated online camera vision imaging systems for coarse rock fragmentation particle size measurement for crusher feed

  • FRAGMENTATION Break It Better

    FRAGMENTATION Break It Better

    Fragmentation data from an online system The results can show a number of different things but most importantly it tells the operator either a The crusher needs to be gapped on a more regular basis based on the increased fragmentation size bThe crusher is being gapped too often when it is not required allowing for less downtime

  • CONTROL OF FRAGMENTATION BY BLASTING

    CONTROL OF FRAGMENTATION BY BLASTING

    Crusher opening Energy utilization and fragmentation process The energy evolved on detonation of exsplosives is utilized in the fragmentation process by two groups of mechanisms First stress wave of extremly short duration of the explosive it is followed by uasistatic gas pressure gen erated by the gas product o 9 explosion A small zone of

  • Blog Three Reasons Why Your Primary Crusher Feed Contains

    Blog Three Reasons Why Your Primary Crusher Feed Contains

    Feb 05 2018Blog Three reasons why your primary crusher feed contains oversized rocks In todays mining industry there is a clear trend of increasing production capacity to reduce costs through economies of scale This es with an everchanging work environment where sudden issues can arise and dramatically impact downstream processes

  • Influence Of Blasting On The Size Distribution And

    Influence Of Blasting On The Size Distribution And

    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

  • Fragmentation Crusher Effect

    Fragmentation Crusher Effect

    Effects fragmentation crusher oalebakkershoesnl Improving Crusher and Mill Throughput and Recovery by Improving primary crusher would be operating very close to its the muckpile fragmentation to improve crusher The project sought to measure the

  • V117n11a10 Target Fragmentation For Efficient Loading

    V117n11a10 Target Fragmentation For Efficient Loading

    A wellswollen muckpile with a fragmentation tailored to the type and size of the machinery will yield fewer passes and smoother more efficient loading pared to an inconsistent and disproportionately crushers product Evertsson 2000 Herbst Lo and Flintoff 2003

  • PDF PostMuckpile PrePrimary Crusher Automated

    PDF PostMuckpile PrePrimary Crusher Automated

    Unfortunately in most operations by the time rock is loaded onto a conveyor belt it has passed through a primary crusher and the size distribution no longer reflects only the blasting process

  • UTILIZING BASIC STATISTICAL ANALYSIS AND

    UTILIZING BASIC STATISTICAL ANALYSIS AND

    Blast Muckpile Fragmentation data can be acquired using digital photos and mercially available fragmentation analysis programs or with a very general manual method An output of one of the mercially available fragmentation analysis programs is shown below The data illustrated here is

  • Controlling Fragmentation Orica Mining Services

    Controlling Fragmentation Orica Mining Services

    FRAGMENTATION Controlling fragmentation Stuart Thomson explains how this improves productivity and environmental performance with some innovative new Orica products Image 1 Considerable advances have been made in fragmentation The image is of a muckpile with the left half of the blast loaded with a monly used bulk explosive and the

  • Managing Muckpile Fragmentation

    Managing Muckpile Fragmentation

    Fragmentation Optimization Opportunities Better digging and bucket fill factors Potential to produce better priced end product Reduction in material losses more saleable product Reduction in blast induced damage Consistent crusher throughput and power draw

  • Impact Of Blast Fragmentation On Hydraulic Excavator

    Impact Of Blast Fragmentation On Hydraulic Excavator

    Fragmentation on the dig time of a Liebherr 994 hydraulic excavator other potential influences on dig time such as muckpile looseness ability of the muck to rill and operator digging strategy were not assessed Fragmentation was quantified for each truck load of material using the Split Desktop

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