火炸药学报2023，Vol.46Issue(11)：999-1006,8.DOI:10.14077/j.issn.1007-7812.202302017
多孔粒状硝酸铵含量对现场混装乳化炸药的性能影响
Influence of Porous Granular Ammonium Nitrate Content on the Performance of Field Mixed Emulsion Explosive
牛草原 1黄文尧 1刘小辉 2辛有利 2贾云佳 2高玉刚 3胡洁1
作者信息
- 1. 安徽理工大学化学工程学院,安徽淮南 232001
- 2. 金堆城钼业股份有限公司,陕西渭南 714000
- 3. 中煤科工集团淮北爆破技术研究院有限公司,安徽淮北 235000
- 折叠
摘要
Abstract
In order to improve the performance of the on-site mixed emulsion explosive,six groups of explosive samples were prepared by adding 0％,3％,6％,9％,12％and 15％in mass fraction of porous granular ammonium nitrate.The micro morphology and structure of porous granular ammonium nitrate were analyzed by scanning electron microscopy.The detonation heat and detonation velocity of the explosives were calculated by B-W method,and the viscosity,density and detonation ve-locity of the explosive samples were tested.The results show that the viscosity of the explosive increases with an increase in the mass fraction of porous granular ammonium nitrate.When the mass fraction is 0％to 12％,the viscosity ranges from 1.75 × 105 mPa·s to 2.97 × 105 mPa·s.The theoretical heat of explosion increases from 2 382.95 kJ/kg to 2 790.89 kJ/kg,and the theoretical detonation velocity increases from 4 229 m/s to 4 683 m/s.The actual detonation velocity first increases from 4 198 m/s to 5 294 m/s and then decreases to 4578 m/s under the influence of charge density.When the mass fraction of por-ous granular ammonium nitrate is 9％,the actual detonation velocity of explosive reaches the highest.When the explosive is applied in the mine blasting,the rock fragmentation decreases after blasting and the ore fines rate increases from 30％to 45％.关键词
物理化学/多孔粒状硝酸铵/现场混装乳化炸药/工业炸药/黏度/爆速Key words
physcial chemistry/porous granular ammonium nitrate/on-site mixed emulsion explosive/industry explosive/viscosity/detonation velocity分类
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牛草原,黄文尧,刘小辉,辛有利,贾云佳,高玉刚,胡洁..多孔粒状硝酸铵含量对现场混装乳化炸药的性能影响[J].火炸药学报,2023,46(11):999-1006,8.
