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Initiation of Explosive Emulsion When initiating shock wave applies to emulsion explosives the ultra fine air bubbles gets heated first and act as 'Hot- spots' in emulsion having very high temperature (about 1500 -1800 C) At this high temperature the explosive reaction takes place The resulting emulsion can serve as detonable matrices
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Explosives and drilling are combined into one chapter because blasting in hard rock mines normally involves placing explosives into boreholes (blastholes) drilled in rock Commercial explosives are mixtures of chemical compounds in solid or liquid form
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No2 Rock blasting emulsion explosive No2 Rock Blasting Colloidal Emulsion Explosive Explosives Products Main Applications:It can be widely applied to all kinds of hard rock blasting and controlled demolition blasting without explosive atmosphere o Rock Blasting and Explosives Engineering - Google Books
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Explosive Any chemical or mixture of chemicals that can react to produce an explosion Free face A rock surface that provides the rock with room to expand when blasted Flyrock Rock that is propelled through air from a blast Fragmentation Measure to describe the size of distribution of broken rock after blasting Ground vibration Ground
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Mass of explosive per hole (kg) = Volume of hole length charged x Explosive density PF 3(kg/m) = Total explosives in the blast/volume of rock blasted (for kg/Tonne divided by blasted tonnes T) RWS = AWS of explosive/AWS of ANFO x 100 RBS = (RWS explosive x explosive density)/ (ANFO density) Energy factor = PF x RWS
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In holes the measurement of the velocity of detonation (VOD) helps in comparing 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
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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 Explosives Emulsion Explosives have very high rate of reaction generating maximum bore hole pressure and high rate of
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Explosives Energy Release and Rock Breakage: Mechanism of rock breakage while release of Explosives energy upon detonation and other relevant points are discussed below: When an explosive charge is detonated chemical reaction occur which very rapidly changes the solid or liquid explosive mass into a hot gases
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Zhejiang Limin Chemical Industry Co Ltd is a designated production enterprise of national civil explosive equipments The company was formerly known as Zhejiang Limin Chemical Factory founded in 1965 and was affiliated to Zhejiang Province National Defense Science and Technology Industry Office it began the production of Emulsion explosives since 1983 as the earliest civil explosive
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Practical methods to control explosives losses and reduce ammonia and nitrate levels Ammonia and nitrate toxicity Relatively small concentrations of ammonia in wat'er are very detri mental to fish particularly most trout species The toxicity of ammo nia varies with pH and temperature Researchers have found that at
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Analyzed the condition of coal-mine explosive malfunction in China and researched the passivation mechanism of coal-mining emulsion explosive and delay electric blasting cap and discussed the avenue of researching the permitted emulsion explosive with the
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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 Explosives Emulsion Explosives have very high rate of reaction generating maximum bore hole pressure and high rate of
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2-1 through 2-6) With cartridge explosives the confined velocity is seldom attained because complete confinement is usually impossible For blasting in hard rock a high-velocity explosive is preferable In a softer or highly jointed rock a low-velocity explosive for example (ANFO) with a heaving action may give satisfactory results at a
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The explosive plays an important role in blasting and also influence the explosive-rock interaction The most common explosive type used in surface mines is emulsion explosives This paper presents the study on the detonation velocity of bulk emulsion explosives due to variation in gassing agent and density In this study Sodium Nitrite (NaNO2
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Quick Supply Company also comprises a blasting division to break rock for excavation for mining quarrying and civil engineering purposes Our blasting division includes additional branches of Quick Supply Company Bennett Explosives Inc Dole Explosives and Quality Blasting Services
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efficient use of the explosive energy in the blast Benches may be designed and carried forth with more than one face so that simple blasting patterns can be used to remove the rock In the illustration that follows (Figure 8-4) shows a typical bench cut with two free faces and fired with one delay per row
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Zhejiang Limin Chemical Industry Co Ltd is a designated production enterprise of national civil explosive equipments The company was formerly known as Zhejiang Limin Chemical Factory founded in 1965 and was affiliated to Zhejiang Province National Defense Science and Technology Industry Office it began the production of Emulsion explosives since 1983 as the earliest civil explosive
Get more