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  • PDF Comparative Study of ANFO Versus Emulsion Use in
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    The following comparisons were made for both types of explosives mining profiles after blasting the effects of explosives on the rock mass advance per blast fragmentation re-entry periods and...

  • Different Types of Explosives Used in Mining
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    Sep 04 2019 0183 32 The Industrial Revolution carried discoveries in explosives and initiation technologi A specialization principle therefore operates between the military and civil application of explosives thanks to new products economics versatility strength precision or capability to be stored for long periods without significant deterioration...

  • BULK EMULSION EXPLOSIVE
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    Sweden where Bulk Emulsion Explosives have been used A comparison is made with other types of explosives re 173 garding costs for drilling and blasting By using Bulk Emulsion Explosive it was possible to achieve a better breakage performance In a copper mine this resulted in a decreased powder factor and thereby less cost for the explosive...

  • The application of pumpable emulsions in narrow
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    the rock mass a greater mass of explosive is necessary per blast-hole to break a fixed mass of rock further compounding the additional time and labour required to load the blast-face Cartridged watergel explosives Emulsion explosives first entered South African underground...

  • Practical methods to control explosives losses and reduce
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    der certain conditions packaged emulsion and watergel explosives can fail when rock or gas pressure from an adjacent charge squeezes them to a density above their critical limit This precompression or dead-pressing phenomenon is caused by several conditions or combi 173 nations of conditions When the ground is very seamy...

  • Explosive Characteristics and Performance
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    VoD is a guide to determining the efficiency of the explosive Comparison of VoD results should be done within the context of the particular blasting situation ie same mine same rock type For Example ANFO VoDs vary from 2500 to 4500 m/s 8200-14700 ft/s depending on hole diameter in the same rock...

  • What is the difference between emulsion explosives and
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    Emulsion Explosive emulsion explosive is the use of the role of emulsifier so that the oxidant salt solution of water droplets evenly dispersed in the dispersion of bubbles or hollow glass beads and other porous substances in the oil phase continuous medium the formation of a water-in-water latex Is a new type of industrial explosives developed in the 1970s...

  • Influence of density of emulsion explosives on its
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    principles namely proper explosive energy input at stra-tegic locations within the rock mass and its proper time of release for optimum interaction31 To obtain a low-density explosive LDEX product emulsion matrix was prepared from the site mixed emul-sion explosive system at the mine site Table 1...

  • Emulsion Explosives
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    One explosive supplier has pioneered the use of emulsion explosives in borehole diameters up to 115 mm typically in underground sublevel cave SLC operations Emulsion explosives also provide the base for another general class of explosives using ad-mixtures of ANFO...

  • 2 Rock Emulsion Explosive GB28286
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    2 Rock Emulsion Explosive Product Description Our 2 Rock Emulsion Explosive is semi-solid grease is the most advanced international civil explosives this explosives is a kind of environment-friendly non-TNT-water-resistant industrial explosives with excellent water resistance...

  • Determination of properties for emulsion explosives using
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    Determination of properties for emulsion explosives using cylinder expansion tests and numerical simulation Bestämning av emulsionssprängämnens These tests were conducted with explosives intended for rock blasting while the methodology initially was indented to determine the properties of high explosive military explosives eg PETN...

  • NPSgov Homepage US National Park Service
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    NPSgov Homepage US National Park Service...

  • Safety assessment of buried gas pipeline subject to
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    TNT equivalent analysis of No2 rock emulsion explosive used in the experiment was carried out The results are as follows 5 w = E 2 E T The TNT equivalent of No2 rock emulsion explosive w = 0748 that is the energy released by 1 kg of No2 rock emulsion explosive is equivalent to the energy released by 0748 kg TNT explosive Therefore...

  • List of Approved Explosives in Hong Kong as at 20200617
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    Jun 17 2020 0183 32 Orica Explosives Philippines Inc RJ3-emulsion explosives Rock emulsion explosives Hunan Nanling Industrial Explosive Matrerials Company Limited 2 Rock Emulsion Explosive 32mm diameter x 230mm length 60mm diameter x 350mm length Guang Dong Li Tuo Industrial Explosive Materials Factory / Guangdong Ming Hua Machinery Co Ltd 2 Rock...

  • Explosives for Rock Blasting Dyno Nobel
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    Today 95 of all explosives consumed are delivered in bulk form At large scale mines and quarries specially designed trucks combine the ingredients and pump or auger them into the borehole Bulk explosives range from simple ANFO ammonium nitrate fuel oil to straight emulsions and include a wide variety of ANFO/emulsion blends - each with...

  • Emulsion Explosive
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    The emulsion explosive is used for gallery driving power construction metallurgy mine and mine exploitation solid rock and under water blasting It may also be used for directional blasting of high-rise building and smooth blasting...

  • Rock Blasting and Explosives Engineering
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    Rock Blasting and Explosives Engineering covers the practical engineering aspects of many different kinds of rock blasting It includes a thorough analysis of the cost of the entire process of tunneling by drilling and blasting in comparison with full-face boring Also covered are the fundamental sciences of rock mass and material strength the thermal decomposition burning shock initiation...

  • Explosives and Blasting Agents
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    ANFO versus emulsion explosives 16 Low explosives 17 High explosives 18 Alternative technologies 18 Industrial explosives 19 Military explosives 20 Environmental and security issues 21 Study methodology 22 Coal mining 22 Metal mining 22 Nonmetal mining and quarrying 22 Supply and demand by region 24...

  • Blasting Principles
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    Emulsion Explosiv An emulsion is a physical mixture of two immiscible liquids often water and oil formed by shearing discrete droplets of one liquid phase into a continuous phase of the other liqu A surfactant called an emulsifier is used to maintain the stability of the mixture...

  • Explosives and rock blasting atlas powder company 1987 pdf
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    BULK EMULSION EXPLOSIVE A CASE STUDY BIBLIOGRAPHY onlinelibrarywiley Rock Blasting and Explosives Engineering Per-Anders Persson Roger Holmberg Jaimin Lee on Amazon FREE shipping on qualifying offers Rock Blasting and Explosives Engineering covers the practical engineering aspects of many different kinds of rock blasting...

  • Explosives Used in Mining Properties Types Transport
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    Slurry Watergel Emulsion Explosives Deterioration of slurry explosives is usually indicated by a breakdown of the gel into separate liquid and solid components It may also appeal as hardening of the explosive cartridge Cartridges may also be swollen or distorted and salts in the composition may crystallize on the outside Detonators...

  • Rock damage control in bedrock blasting excavation for a
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    In the field experiment small charge of No 2 rock emulsion explosives were used to simulate ground construction blasting the blasting vibration velocity tester TC-4850 and dynamic strain measurement system DH5956 are used to monitor data the analysis of field data shows that the experimental data meet the general rules which proves the...

  • Emulsion Blend Blasting Product and How it Differs from
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    Dec 21 2018 0183 32 With the 45 denser product a borehole loaded with ANFO that would have held 100 lbs of explosive product the exact same borehole loaded with emulsion could hold 145 lbs of explosiv If you have not read our blog post on Powder Factor go back and read it to understand the significance of this difference...

  • Emulsion Explosives
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    Emulsion Explosives are used for blasting in quarries stripping in underground metal mines tunneling well sinking road construction etc IDEAL Industrial Explosives offers complete range of ideal power brand Emulsion Explosiv Emulsion Explosives have very high rate of reaction generating maximum bore hole pressure and high rate of...

  • US4482403A
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    A water-in-oil emulsion explosive composition containing an emulsifier consisting of a mixture of sorbide sorbitan and sorbitol fatty acid esters in a specifically limited mixing ratio has an improved storage stability in initiation sensitivity in small diameter cartridges and at low temperatures and further has an improved resistance against dead pressing...

  • Characteristics of explosives Pit Quarry
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    Mar 20 2019 0183 32 The RBS of an explosive is the energy per unit volume of an explosive when it is compared to ANFO So the RBS of ANFO is either 100 or 100 depending on the manufacturer The RBS of emulsions typically ranges between 110 and 140 depending on production factors This means on a per volume basis emulsion is a more powerful explosive than ANFO...

  • Explosives for blasting in civil excavations
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    Dynamite the nitroglycerin-based explosive was the dominant explosive used until the latter half of the 20 th Century Ammonium nitrate fuel oil or anfo began to be seen in civil work in the 1970s with watergels and emulsions starting to appear in the 1980s...

  • Explosive Characteristics and Performance
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    fragmentation rock displacement ground vibration and air overpressure Explosive efficiency varies from 35 to 90 of maximum energy this is the actual energy delivered in a blast is 35 to 90 of theoretical maximum The actual amount of energy delivered from any blast hole is unknown...

  • Emulsion explosive composition
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    57 Abstract The invention relates to explosive compositions used for blasting in mining To enhance the physical stability during long-term storage of emulsion explosives containing ammonium nitrate oxidation and hydrocarbon phase and sensitizing additive as an emulsifier and emulsion stabilizer use condensation products of polyolefin hydrocarbon with maleic anhydride and alkanolamines or...

  • Bulk explosives Explosives and accessories Our offers
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    On-site MEMU Bulk Emulsion Using bulk explosives emulsion offers the advantage of a perfect combination of the rock and explosives enabling superior performance of the product and therefore optimization of the drilling blasting and downstream operations Titanobel offers two types of bulk emulsions - Gemulsite 80...

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