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What explosive is 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.
What is blasting explain the used and principles of blasting?
blasting, process of reducing a solid body, such as rock, to fragments by using an explosive. Conventional blasting operations include (1) drilling holes, (2) placing a charge and detonator in each hole, (3) detonating the charge, and (4) clearing away the broken material.
What is the Monroe effect?
Definition of Munroe effect : the greatly increased penetration of an explosive into a surface (as of metal or concrete) that is caused by shaping a conical or hemispherical hollow in the forward end of an explosive cartridge.
What are some explosive elements?
COMPOSITION OF BOMBS
| Explosives Based on Nitrogen | Formula | wt % O |
|---|---|---|
| Ammonium nitrate (AN) | H4N2O3 | 59.97 |
| Ammonium picrate (Expl D) | C6H6N4O7 | 45.5 |
| Cyclonite (RDX) | C3H6N6O6 | 43.22 |
| Ethylenediamine dinitrate | C2H10N4O6 | 51.58 |
What kind of charges are used to cut steel?
Cutting charges include linear-shaped charges, which have been available for several years, and the more recently introduced cutting tape. Linear-Shaped Charges. These charges use high-velocity explosive energy to accelerate a v-shaped liner material (usually copper) into a high-velocity jet (Welch, 1995) that can penetrate and cut the steel.
What are the different types of explosive cutters?
Explosive cutters presently in use are bulk charges, configured bulk charges, and other cutting charges, such as linear-shaped charges. Fracturing charges and cutting tape, such as contact and refraction tape, may have future applications.
What are the characteristics of explosive materials?
EXPLOSIVES DEFINITIONS 1. An explosive substance is a solid or liquid substance (or mixture of substances) which is in itself capable by chemical reaction of producing gas at such a temperature and pressure and at such a speed as to cause damage to the surroundings. Pyrotechnic substances are included even when they do not evolve gases.
How can we reduce the weight of explosive charges?
Improvements in the configuration of explosives such as ring charges built to collide or “focus” the explosive detonation front have been effective in localizing pile belling and reducing the weight of charges. Ungrouted piling, which may need to be removed separately from the jacket to reduce lift weight, can be removed by collision charges.