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  • The Journal of The South African Institute of Mining and Metallurgy FEBRUARY 2005 as a function of powder factor and burden thickness based References AKSOY C O Evaluation of Aggregate Production Methods for Highway

    The Journal of The South African Institute of Mining and Metallurgy FEBRUARY 2005 as a function of powder factor and burden thickness based References AKSOY C O Evaluation of Aggregate Production Methods for Highway

  • Jan 31 2018 for an open pit line quarry in Dalmatia southern Croatia The objective of a blasting engineer in a mine is to generate a suitable is the powder factor in kilograms of explosive per cubic meter of rock Q is mass of

    Jan 31 2018 for an open pit line quarry in Dalmatia southern Croatia The objective of a blasting engineer in a mine is to generate a suitable is the powder factor in kilograms of explosive per cubic meter of rock Q is mass of

  • Power factor correction increases the power factor of a load improving efficiency for the distribution system to which it is attached Linear loads with low power factor such as induction motors can be corrected with a passive network of capacitors or inductors

    Power factor correction increases the power factor of a load improving efficiency for the distribution system to which it is attached Linear loads with low power factor such as induction motors can be corrected with a passive network of capacitors or inductors

  • The drilling and blasting is the first unit operations in the mining process and has a produce granite aggregates such as 1 211 3 411 lumps and quarry dust 8 also stated that smaller diameter borehole will only favour powder factor

    The drilling and blasting is the first unit operations in the mining process and has a produce granite aggregates such as 1 211 3 411 lumps and quarry dust 8 also stated that smaller diameter borehole will only favour powder factor

  • Powder factor expressed in tons of rock blasted per pound of explosive is a significant indicator of expected blasting performance Other mining and explosive parameters can be included in the analysis also Point A is the typical powder factor used in many mines It blasts and fragments the rock too small and creates fines

    Powder factor expressed in tons of rock blasted per pound of explosive is a significant indicator of expected blasting performance Other mining and explosive parameters can be included in the analysis also Point A is the typical powder factor used in many mines It blasts and fragments the rock too small and creates fines

  • Hard Rock Miner s Handbook is a work of the heart Jack whose 40 year career spanned engineering construction and operation of mining projects worldwide conceived of and wrote the first edition of the Handbook published in June 2000 to assist miners and engineers in the difficult world of hard rock mining It was his

    Hard Rock Miner s Handbook is a work of the heart Jack whose 40 year career spanned engineering construction and operation of mining projects worldwide conceived of and wrote the first edition of the Handbook published in June 2000 to assist miners and engineers in the difficult world of hard rock mining It was his

  • A NOVEL POWDER FACTOR BASED BENCH BLAST DESIGN METHOD FOR LARGE SURFACE COAL MINES by ANDREW CLIFFORD BLAIR A DISSERTATION Presented to the Graduate Faculty of the MISSOURI UNIVERSITY OF SCIENCE AND TECHNOLOGY In Partial Fulfillment of the Requirements for the Degree DOCTOR OF PHILOSOPHY in MINING ENGINEERING 2015

    A NOVEL POWDER FACTOR BASED BENCH BLAST DESIGN METHOD FOR LARGE SURFACE COAL MINES by ANDREW CLIFFORD BLAIR A DISSERTATION Presented to the Graduate Faculty of the MISSOURI UNIVERSITY OF SCIENCE AND TECHNOLOGY In Partial Fulfillment of the Requirements for the Degree DOCTOR OF PHILOSOPHY in MINING ENGINEERING 2015

  • Powder factor desired iii Cost of explosive iv Mining industry is the backbone for the development of any nation In mining the basic aim is to aggregate cost of drilling and blasting is taken together

    Powder factor desired iii Cost of explosive iv Mining industry is the backbone for the development of any nation In mining the basic aim is to aggregate cost of drilling and blasting is taken together

  • The plant is currently producing up to 345tph of aggregates used in Hawaiian Cement s concrete products comfortably meeting the monthly aggregate demand of 60 000 tons Sean Haggerty General Manager at Hawaiian Cement commented By reducing our dependence on import sand as well as boosting our product offering CDE s technology is a

    The plant is currently producing up to 345tph of aggregates used in Hawaiian Cement s concrete products comfortably meeting the monthly aggregate demand of 60 000 tons Sean Haggerty General Manager at Hawaiian Cement commented By reducing our dependence on import sand as well as boosting our product offering CDE s technology is a

  • Powder factor 0 47 kg bm3 Backbreak up to 11 m Shotrock fragmentation d 90 630 mm Secondary crusher 995 tph Quarry Management Lafarge Exshaw Cement Quarry Annual production 1 6 mill tonnes Rock types limestone dolomite Density 2 6 g cm3 Primary gyratory crusher 54 quot 1370 mm opening 150 mm

    Powder factor 0 47 kg bm3 Backbreak up to 11 m Shotrock fragmentation d 90 630 mm Secondary crusher 995 tph Quarry Management Lafarge Exshaw Cement Quarry Annual production 1 6 mill tonnes Rock types limestone dolomite Density 2 6 g cm3 Primary gyratory crusher 54 quot 1370 mm opening 150 mm

  • Sep 13 2010 · Powder Factor is the relationship of Explosives to Volume It describes how much explosives are needed to blast a particular volume of rock The easy formula is

    Sep 13 2010 · Powder Factor is the relationship of Explosives to Volume It describes how much explosives are needed to blast a particular volume of rock The easy formula is

  • The main objective of fragmentation by blasting is to achieve the optimum powder factor which may be defined as the powder factor required for the optimum fragmentation throw ground vibration etc for a specified blast condition to minimize the overall mining cost Presently the powder factor is established through the trial blasts

    The main objective of fragmentation by blasting is to achieve the optimum powder factor which may be defined as the powder factor required for the optimum fragmentation throw ground vibration etc for a specified blast condition to minimize the overall mining cost Presently the powder factor is established through the trial blasts

  • study done by Orica refer to Appendix A 3 1 Powder Factor 5 P a g e It is important to pick an appropriate powder factor that maximizes the diggability of the material Muck blasted with too low of a powder factor results in particles that are blocky From here explosives will be delivered to the mining areas via Mobile Mixing Units

    study done by Orica refer to Appendix A 3 1 Powder Factor 5 P a g e It is important to pick an appropriate powder factor that maximizes the diggability of the material Muck blasted with too low of a powder factor results in particles that are blocky From here explosives will be delivered to the mining areas via Mobile Mixing Units

  • 3 5 Influence of powder factor on muckpile properties Due to variations made in values of spacing burden stemming and bench height powder factor and geological conditions values of powder factor moved from 0 79 kg cum to 1 21 kg cum Relation between powder factor and muck properties are as shown in Figure 18 19 and 20

    3 5 Influence of powder factor on muckpile properties Due to variations made in values of spacing burden stemming and bench height powder factor and geological conditions values of powder factor moved from 0 79 kg cum to 1 21 kg cum Relation between powder factor and muck properties are as shown in Figure 18 19 and 20

  • Soil and rock expansion or swell after mining Engineering ToolBox Resources Tools and Basic Information for Engineering and Design of Technical Applications Example Swell Factor After excavation of 300 m 3 clay with bulking factor 40 the clay swells to 300 m 3

    Soil and rock expansion or swell after mining Engineering ToolBox Resources Tools and Basic Information for Engineering and Design of Technical Applications Example Swell Factor After excavation of 300 m 3 clay with bulking factor 40 the clay swells to 300 m 3

  • Pit Viper drilling for Africa s iron Pit Viper and ROC L8 rigs from  – is a key element for both the mines themselves as well as mining contractors Dennis Stonefield Appliions Manager with  in Gauteng points out that there are more than 30 Pit Viper rigs as well as ROC L8 units at work in the region with

    Pit Viper drilling for Africa s iron Pit Viper and ROC L8 rigs from – is a key element for both the mines themselves as well as mining contractors Dennis Stonefield Appliions Manager with in Gauteng points out that there are more than 30 Pit Viper rigs as well as ROC L8 units at work in the region with

  • ROCK BLASTING FOR MINING The Powder Factor is a relationship between how much rock is broken and how m uch explosive is used to break it It can serve a variety of pu rposes

    ROCK BLASTING FOR MINING The Powder Factor is a relationship between how much rock is broken and how m uch explosive is used to break it It can serve a variety of pu rposes

  • Table of ContentsModelling Blast FragmentationOptimization of Unit OperationsOptimization of Fragmentation in an Underground MineComparison of Costs of Mechanical and Explosive Comminution Blasting plays a key role in all facets of operations Obviously drilling and blasting costs are determined by blast design but the downstream costs that are closely related to blasting results are often

    Table of ContentsModelling Blast FragmentationOptimization of Unit OperationsOptimization of Fragmentation in an Underground MineComparison of Costs of Mechanical and Explosive Comminution Blasting plays a key role in all facets of operations Obviously drilling and blasting costs are determined by blast design but the downstream costs that are closely related to blasting results are often

  • A NOVEL POWDER FACTOR BASED BENCH BLAST DESIGN METHOD FOR LARGE SURFACE COAL MINES by ANDREW CLIFFORD BLAIR A DISSERTATION Presented to the Graduate Faculty of the MISSOURI UNIVERSITY OF SCIENCE AND TECHNOLOGY In Partial Fulfillment of the Requirements for the Degree DOCTOR OF PHILOSOPHY in MINING ENGINEERING 2015

    A NOVEL POWDER FACTOR BASED BENCH BLAST DESIGN METHOD FOR LARGE SURFACE COAL MINES by ANDREW CLIFFORD BLAIR A DISSERTATION Presented to the Graduate Faculty of the MISSOURI UNIVERSITY OF SCIENCE AND TECHNOLOGY In Partial Fulfillment of the Requirements for the Degree DOCTOR OF PHILOSOPHY in MINING ENGINEERING 2015

  • Plant 862 a surface line mine operated by Martin Marietta Material Martin historical blasting experience at this mine delay system powder factor and

    Plant 862 a surface line mine operated by Martin Marietta Material Martin historical blasting experience at this mine delay system powder factor and

  • The powder factor in NCL BCCL SECL ECL WCL and West Bokaro Collieries was in range of the optimum powder factor and quality of explosives was measured The rating index of bulk explosives is varied in between 70 and 100 The powder factor in hard rock was 1 5 to 2 5m3 kg and in soft rock it was in range of 2 0to 3 m3 kg

    The powder factor in NCL BCCL SECL ECL WCL and West Bokaro Collieries was in range of the optimum powder factor and quality of explosives was measured The rating index of bulk explosives is varied in between 70 and 100 The powder factor in hard rock was 1 5 to 2 5m3 kg and in soft rock it was in range of 2 0to 3 m3 kg

  • Powder Factor The following discussion shows a typical type of calculation involved in explosives engineering Powder Factor is defined as the amount of explosive required to dislodge and fragment 1 cubic yard of rock 3 The softer less dense the material that is being blasted the smaller the powder factor

    Powder Factor The following discussion shows a typical type of calculation involved in explosives engineering Powder Factor is defined as the amount of explosive required to dislodge and fragment 1 cubic yard of rock 3 The softer less dense the material that is being blasted the smaller the powder factor

  • Surface Mining U S Department of the Interior located in Denver Colorado Powder factor is the relationship between a rock mass and the explosive used to

    Surface Mining U S Department of the Interior located in Denver Colorado Powder factor is the relationship between a rock mass and the explosive used to

  • Line 2 64 10 – 245 PF Required powder factor usually 0 3 to 0 6 kg m2 L used in tunnelling and underground mine development Length

    Line 2 64 10 – 245 PF Required powder factor usually 0 3 to 0 6 kg m2 L used in tunnelling and underground mine development Length

  • powder factor for aggregate mining grinding mill equipment Aggregate powder production line for sale XSM is a leading global manufacturer of crushing and powder factor for aggregate mining Mining Engineering Research Science topic Explore the latest articles projects and questions and answers in Mining Engineering and find Mining Engineering

    powder factor for aggregate mining grinding mill equipment Aggregate powder production line for sale XSM is a leading global manufacturer of crushing and powder factor for aggregate mining Mining Engineering Research Science topic Explore the latest articles projects and questions and answers in Mining Engineering and find Mining Engineering

  • line mine an equipment operator was fatally injured while guarding access roads in a Schneider 1997 emphasized the role of excessive powder factor

    line mine an equipment operator was fatally injured while guarding access roads in a Schneider 1997 emphasized the role of excessive powder factor

  • Most possible reason for realizing high powder factors could be the introduction of various new explosive agents such as water gel in to the local mining industry

    Most possible reason for realizing high powder factors could be the introduction of various new explosive agents such as water gel in to the local mining industry

  • The graph below shows the change in distribution as the powder factor is increased or lowered The optimum powder factor is 1 6 tons lb and has 76 1 of the produced aggregate within the upper and lower limits For reference the 2 1 tons lb has a 39 1 of aggregate

    The graph below shows the change in distribution as the powder factor is increased or lowered The optimum powder factor is 1 6 tons lb and has 76 1 of the produced aggregate within the upper and lower limits For reference the 2 1 tons lb has a 39 1 of aggregate

  • Dec 8 2005 adapt the JKMRC Mine to Mill technology to the aggregates industry The second shot of 30 000 tonnes at a powder factor of 0 35 kg t

    Dec 8 2005 adapt the JKMRC Mine to Mill technology to the aggregates industry The second shot of 30 000 tonnes at a powder factor of 0 35 kg t

  • many factors in the blasting procedure that can be modified in order stemming from ejecting Aggregates and Mining Today 2010 powder factor kg m3 Q

    many factors in the blasting procedure that can be modified in order stemming from ejecting Aggregates and Mining Today 2010 powder factor kg m3 Q

  • of powder factor in mines and each has implicated certain parameters of rock mass The bedrock is line type of Shahbazan from Asmari formation30 31

    of powder factor in mines and each has implicated certain parameters of rock mass The bedrock is line type of Shahbazan from Asmari formation30 31

  • Apr 17 2019 · Today we still hold the same belief that powder factor is a useful tool for economic analysis but is a poor tool for the design of blasts because powder factor varies based on rock type rock structure type of explosive blast configuration hole to hole timing row to row timing bench height and stemming materials

    Apr 17 2019 · Today we still hold the same belief that powder factor is a useful tool for economic analysis but is a poor tool for the design of blasts because powder factor varies based on rock type rock structure type of explosive blast configuration hole to hole timing row to row timing bench height and stemming materials

  • Jan 06 2019 nbsp 0183 32In this video explain that what is powder Factor and how to calculate Powder Factor Delay detonator https youtu NmHofjCf7nI Important questions for m

    Jan 06 2019 nbsp 0183 32In this video explain that what is powder Factor and how to calculate Powder Factor Delay detonator https youtu NmHofjCf7nI Important questions for m

  • Chapter 8 BLAST DESIGN Figure 8 2 Staggered pattern Figure 8 3 Sing The higher the powder factor the lighter the load Lower powder factor means more explosives Example The economic analysis of the use of explosives is an important part of blasting operations in mining and construction Explosives are energy and the efficient

    Chapter 8 BLAST DESIGN Figure 8 2 Staggered pattern Figure 8 3 Sing The higher the powder factor the lighter the load Lower powder factor means more explosives Example The economic analysis of the use of explosives is an important part of blasting operations in mining and construction Explosives are energy and the efficient

  • UTILIZING BASIC STATISTICAL ANALYSIS AND FRAGMENTATION ANALYSIS TO IMPROVE FRAGMENTATION Dave Lilly P E MBA fragmentation analysis to changes in blasting parameters such as powder factor Cement and Aggregate in this paper the data flow is as follows Swell Factor Powder Factor Fragmentation

    UTILIZING BASIC STATISTICAL ANALYSIS AND FRAGMENTATION ANALYSIS TO IMPROVE FRAGMENTATION Dave Lilly P E MBA fragmentation analysis to changes in blasting parameters such as powder factor Cement and Aggregate in this paper the data flow is as follows Swell Factor Powder Factor Fragmentation

  • The actual mine data in respect of different mining parameters was collected and a time motion study was carried out Data analysis for a few important parameters is summarized below 3 2 Situation Analysis Blasting The powder factor is found to be highly variable

    The actual mine data in respect of different mining parameters was collected and a time motion study was carried out Data analysis for a few important parameters is summarized below 3 2 Situation Analysis Blasting The powder factor is found to be highly variable

  • Powder Factor Tons of rock or cubic yards per pounds of explosive of the use of explosives is an important part of blasting operations in mining and

    Powder Factor Tons of rock or cubic yards per pounds of explosive of the use of explosives is an important part of blasting operations in mining and

  • In surface mining operations the weight of explosive used per unit volume of rock blasted is measured in pounds per cubic yard lb yd 3 kg m 3 to produce broken material is defined as powder factor However in underground mining operations the preference is to define powder factor as the weight of explosive required per unit of weight of rock to fragment either a metric tonne or an

    In surface mining operations the weight of explosive used per unit volume of rock blasted is measured in pounds per cubic yard lb yd 3 kg m 3 to produce broken material is defined as powder factor However in underground mining operations the preference is to define powder factor as the weight of explosive required per unit of weight of rock to fragment either a metric tonne or an

  • Considering these and various other factors it a powder factor of 3 to 4 Methodology Wildlife Institute of India Dehradun the study of the soil characteristics in and around the limestone mining complex become an important factor in the Environmental Impact factors in considering a site for limestone mining aggregate mix plants

    Considering these and various other factors it a powder factor of 3 to 4 Methodology Wildlife Institute of India Dehradun the study of the soil characteristics in and around the limestone mining complex become an important factor in the Environmental Impact factors in considering a site for limestone mining aggregate mix plants

  • The actual mine data in respect of different mining parameters was collected and a time motion study was carried out Data analysis for a few important parameters is summarized below 3 2 Situation Analysis Blasting The powder factor is found to be highly variable

    The actual mine data in respect of different mining parameters was collected and a time motion study was carried out Data analysis for a few important parameters is summarized below 3 2 Situation Analysis Blasting The powder factor is found to be highly variable

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