微米级煤粉水浊液制备粒状铵油炸药的试验研究OA北大核心CSTPCD

To reduce the material cost and improve the stability and safety,the porous granular ammonium nitrate and fuel oil(ANFO)explosive was prepared by partially or fully substitution of a mixture of micro-meter coal powder and water(the vol-ume ratio of coal powder and water slurry is 1∶1)for diesel oil.Through experimental testing,the optimal formula with the maximum detonation velocity was obtained.The friction sensitivity of the emulsion explosive was studied using a friction sensi-tivity tester,and the effect of coal powder on the thermal decomposition reaction of porous granular ANFO explosive was stud-ied using a C80 micro-thermal analyzer.The kinetics and thermodynamics parameters of thermal decomposition reaction for dif-ferent samples were calculated using Arrhenius equation based on the thermal flow curve data.Results show that the explosive prepared with a mixture of 10％coal powder water slurry and 2％diesel oil has the highest detonation velocity of 3 227m/s.The friction sensitivity of the explosive is the highest,with a maximum probability of ignition of 4％.The coal powder water slurry inhibits the thermal decomposition reaction of porous granular ANFO explosive.The apparent activation energy,pre-exponen-tial factor,and initial decomposition temperature of the explosive prepared with the coal powder water slurry are higher than those of the pure diesel oil porous granular ANFO explosive.The new-made explosive prepared by partially or fully substitution of the coal powder water slurry for diesel oil has better thermal stability.