explosives compositions used in mining

Different Types of Explosives Used in Mining

04/09/2019· Due to their extreme sensitivity to heat, friction, impact, static electricity. Mercury fulminate, lead azide or PETN (or penthrite, or more properly Penta Erythritol Tetra Nitrate) are good examples of primary explosives used in the mining

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Explosives Used in Mining: Properties, Types, Transport

Explosives are used in underground mines and quarries to break coal and other rocks. An explosive is a solid or a liquid substance or mixture of substances which change themselves instantaneously into a large volume of gases at high temperature and pressure when a flame, heat or sudden shock (detonation) is applied to it.

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Explosives Mining Types

07/07/2011· Approximately 1.72 million metric tons (Mt) of explosives used for coal mining in 2000. This accounted for 67 percent of total U.S. explosives consumption. The largest coal producing states

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Explosives utilization at a Witwatersrand gold mine

explosives an integral part of the mining cycle. Without them, production cannot take place. Explosives utilization is the usage of explosives in a manner that yields the desired results and that exploits every aspect of their ability to break rock. In order to optimize the use of explosives, a thorough understanding of their properties, characteristics, rock-breaking mechanisms, and

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Emulsion explosive composition

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 polyol, or a mixture of these products with glycerin, polyglycerins or pentaerythritol esters of fatty

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UG Explosives and Blasting SlideShare

14/07/2016· In all Explosives of N.G. based on nitroglycol is mixed for lowering the freezing point, used for hardest rocks and metals and for shooting oil wells.   Ammonium Nitrate (AN) :   It is a weak Explosives base. Difficult to initiate, so a sensitizer like NG or TNT is used. It is Oxygen positive, Hygroscopic, soluble in water.

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Composition of emulsion blasting explosive

Currently, the mining industry of various countries use granular explosives (granulite), which are based on granulated ammonium nitrate, flammable liquid additives (petroleum products) and special additives for stabilization and physical stability of explosives.

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Introduction to Explosives Public Intelligence

Composition C Explosives, also called Harrisite Western counterpart to Semtex plastic explosive Requires a blasting cap for detonation Ingredients: Approximately 90% RDX; remainder is a plasticizer Appearance: Smells like motor oil, light brown putty-like substance Uses: Typically for demolition and metal cutting Can be specially formed to create targeted explosion

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Explosives Mining Types

07/07/2011· Coal mines use cylinders of compressed air, liquid carbon dioxide, or chemical explosives. Approximately 1.72 million metric tons (Mt) of explosives used for coal mining in 2000. This accounted for...

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Explosives utilization at a Witwatersrand gold mine

explosives an integral part of the mining cycle. Without them, production cannot take place. Explosives utilization is the usage of explosives in a manner that yields the desired results and that exploits every aspect of their ability to break rock. In order to optimize the use of explosives, a thorough understanding of their properties, characteristics, rock-breaking mechanisms, and

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ANFO Wikipedia

In the mining industry, the term ANFO specifically describes a mixture of solid ammonium nitrate prills and diesel fuel. Other explosives based on the ANFO chemistry exist; the most commonly used are emulsions. They differ from ANFO in the physical form the reactants take.

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Explosives SDPR Yugoimport

Trinitrotoluene TNT TNT grade I and III is used as main explosive charge in artillery and mortar projectiles and in hand grenades. It can also be used for production of other explosive materiel in composition with RDX, HMX, PETN, TNT grade IV (solidification point 77.790 C) is

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Drilling and Blasting Technical Aspects of Mining

Mining explosives are substances which detonate to produce a high-intensity shock wave and large volumes of gas which, being confined in a hole, expand rapidly, entering existing minor cracks in the rock, and creating new cracks to break the rock. Explosives used to break rock are collectively called fracture explosives. This distinguishes them from accessories which are, collectively, the

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EXPLOSIVES

The main component of explosive compositions for loading ammunition, aerial bombs, including guided bombs, and for the manufacture of detonating cords, charges for perforators and explosive equipment. Available in various forms: phlegmatized, cemented, plasticized, moistened. Explosive Substance GEKFOL-5,5N (RDX phlegmatized) Homogeneous free flowing orange powder. Designed for the

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Packaged Explosives Commercial Explosives Blasting

Using the Groupe’s advanced Emulsion technology, Exem is suitable for a wide range of applications across surface mining and quarrying operations. The product provides the optimum combination of safety, efficiency, reliability and consistency and is available in a range of cartridge sizes.

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Drilling and blasting Wikipedia

Drilling and blasting is the controlled use of explosives and other methods such as gas pressure blasting pyrotechnics, to break rock for excavation. It is practiced most often in mining, quarrying and civil engineering such as dam, tunnel or road construction. The result of rock blasting is often known as a rock cut. Rock blasting in Finland

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EVALUATION OF EXPLOSIVES USING GROUND VIBRATION CRITERION

The goal of this project is to evaluate explosives used in different mining operations using ground vibration as a criterion. Based on the knowledge of the characteristics and effect of blast vibration we select the type and the amount of explosive to be used in the manner in which they have to be used for optimum result. 1.4 Objectives The objectives of this project are as follows: 1. To

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ANFO Mining and Blasting

14/05/2013· ANFO (or A mmonium Nitrate/Fuel Oil) is a widely used bulk industrial explosive mixture in mines and quarry operation. It consists of 94 % porous Ammonium Nitrate (NH 4 NO 3), (AN) that acts as the oxidizing agent and absorbent for the fuel 6 % number 2 fuel oil (FO), popularly known as High Speed Diesel (HSD).

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What kind of explosives are used in mining % mineinformation

The term originated from the use of mining go under the enemy’s city walls. Mines, unlike bombs, are placed in situ and then require some other stimulus from target before they will detonate. EXPLOSIVE what kind of explosive used in mines. The most commonly used explosives in mining today are ANFO based blends due to lower cost than dynamite.

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Explosives and Detonators Mining and Blasting

used by all major mining companies in Australia to compare explosive strengths. Effective energy is defined as the total energy released by the explosive gases as they expand and do useful work from the initial detonation down to a cut-off pressure of 100 MPa. A ‘cut-off pressure’ is used because it is recognised that the ability of a gas to do work diminishes as the confining pressure

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Explosives utilization at a Witwatersrand gold mine

explosives an integral part of the mining cycle. Without them, production cannot take place. Explosives utilization is the usage of explosives in a manner that yields the desired results and that exploits every aspect of their ability to break rock. In order to optimize the use of explosives, a thorough understanding of their properties, characteristics, rock-breaking mechanisms, and

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Explosive Used In Mining

explosives compositions used in mining. Ammonium nitrate fuel oil (ANFO) is made of about 94% ammonium nitrate and 6% fuel oil. ANFO is widely used as an explosive in mining, quarrying, and tunneling construction or wherever dry conditions exist. The following pie chart shows world consumption of explosives: Drilling and blasting Wikipedia OverviewHistoryProcedureRock supportSee

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Drilling and blasting Wikipedia

Drilling and blasting currently utilizes many different varieties of explosives with different compositions and performance properties. Higher velocity explosives are used for relatively hard rock in order to shatter and break the rock, while low velocity explosives are used in soft rocks to generate more gas pressure and a greater heaving effect. For instance, an early 20th-century blasting

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The History of Chemical Explosives ThoughtCo

01/03/2019· The Explosives Used in Mining. Alfred Nobel and the History of Dynamite. Biography of Alfred Nobel, Inventor of Dynamite . Overview of the Second Industrial Revolution. Black Powder Composition. History of the Nobel Prizes. Gunpowder Facts and History. The Difference Between Deflagration and Detonation. How to Make Nitrocellulose or Flash Paper. How Rockets Work. Nuclear

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C-4 (explosive) Wikipedia

C-4 or Composition C-4 is a common variety of the plastic explosive family known as Composition C, which uses RDX as its explosive agent. C-4 is composed of explosives, plastic binder, plasticizer to make it malleable, and usually a marker or odorizing taggant chemical. C-4 has a texture similar to modelling clay and can be molded into any desired shape. C-4 is metastable and can be exploded

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Explosive Wikipedia

RDX, PETN, HMX: Very powerful explosives which can be used pure or in plastic explosives C-4 (or Composition C-4): An RDX plastic explosive plasticized to be adhesive and malleable; The above compositions may describe most of the explosive material, but a practical explosive will often include small percentages of other substances.

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Methods of blasting using nitrogen-free explosives

02/05/1997· Explosives used in these applications are generally referred to as "commercial and mining" explosives, even though explosives of this type may have applications beyond the strict limits of commercial and mining application. The present invention does not specifically relate to explosives, pyrotechnics, smokes, and other compositions used in military applications and the like. Thus, it will

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US8114231B2 Gassing of emulsion explosives with nitric

A method for gassing an emulsion explosives to sensitize the explosive to detonation and/or for density modification is described. The method comprises reacting a compound having an enol group, or a deprotonated enolate form of the enol group, with a nitrosating agent to generate nitric oxide to gas the explosive. The compound reacted with the nitrosating agent can be a lactone such as

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