Expanded ammonium nitrate explosive taking rice hull powder as combustion agent

Abstract

An expanded ammonium nitrate explosive taking rice hull powder as a combustion agent comprises, in weight percent, 90.0%-94% of ammonium nitrate, 3%-5% of oil phases, 2%-5% of rice hull powder and 0.12%-0.15% of expanding agents. A preparation method of the expanded ammonium nitrate explosive includes the steps: crystallizing ammonium nitrate saturated solution prepared from raw materials in a formula in a vacuum state under the action of the expanding agents; uniformly mixing crystals, the oil phases and the rice hull powder to form a finished product. The expanded ammonium nitrate explosivehas the advantages that the explosive is good in explosion performance, toxic gas content is lower than a standard value, and the explosive is an environment-friendly explosive and has a high popularization value.

Description

technical field [0001] The invention relates to a composition of inorganic nitrogen oxynitrate containing vegetable substances, in particular to an expanded ammonium nitrate explosive with rice husk powder as a combustion agent. Background technique [0002] The toxic gas content of industrial explosives after explosion is the main index to measure the performance of explosives. With the gradual improvement of mine safety requirements, the technical progress guidance of the civil explosive industry also puts forward new requirements for the toxic gas content of explosives. As a stepless powder industrial explosive, expanded ammonium nitrate explosives are characterized by low cost, high production safety, and The advantages of non-toxic and harmless are recognized by the majority of manufacturers and customers. However, as a low detonation velocity industrial explosive, its charge density is small, its working ability per unit volume is small, and the toxic gas content has ...

AI Technical Summary

Problems solved by technology

Therefore, in the production process, optimizing the process and improving the toxic gas content has become a problem that manufacturers of expanded ammonium nitrate explosives need to solve. For a long time, wood flour has the characteristics of high C and H content, large negative oxygen balance, and low density. It has been used as a combustible agent and loosening agent for powdered industrial explosives. However, with the development of the times and the continuous updating of industrial explosives technology, the shortcomings of wood powder as a combustible agent for powdered industrial explosives have gradually emerged. In addition, the Ministry of Industry and Information Technology Security [2010] No. 227 "Guiding Opinions of the Ministry of Industry and Information Technology on the Technological Progress of the Civilian Explosives Industry" clearly stipulates that "from January 1, 2015, the limit of toxic gas content after explosion is greater than 50L / Kg, and those with detonator sensitivity Non-well type packaged explosives and production technology”

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