Research And Application Of The Emulsion Explosive Production Process

Powdery Emulsion Explosive (PEE) is a new industrial explosive which has both the advantage of powdery explosive and emulsion explosive, without single compound explosive such as TNT in it. Because of its excellent blasting and water-resistance performance, PEE has widely applied and extended. But the PEE produced in our company's new 8000t/a line always occurred quality issues such as caking, shorted storage life and volume contraction. In order to produce PEE which meet "WJ9025-2004 Powdery Emulsion Explosive" standard, formula of PEE, action parameter of technology, operational factor of equipment and explosive performance have been analyzed to determine their adjustable direction in this paper.Action parameter of technology and operational factor of equipment have been determined according to the performance testing of PEE. Rotate speed of the emulsifier is increased to 800r/min. The temperature of compressed air is controlled from 80℃to 100℃. Try to preserve the complete W/O(water in oil) micro structure of PEE is always the best. Amount of wind is adjusted by decreasing motor base frequency and opening degree of air valve. Cooling function of vibrated fluidized bed is optimized to control the temperature of PEE under 30℃, and crystal transfer of ammonium nitrate from III→IV is avoided. According to our experience, charge density in the range of 0.88-0.92g/cm~3 is the best to prevent caking of PEE. With the above series of measures, quality issues of caking, shorted storage life and volume contraction are totally solved.The PEE is designated to meet and exceed "WJ9025-2004 Powdery Emulsion Explosive" standard. Technological upgrading aim is realized.