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随着固体火箭技术的发展,对高燃速复合推进剂提出了要求。高燃速是通过使用粒子重均直径在2.5μ以下的高氯酸铵来实现的。通过对高氯酸铵各种粉碎方法的研究与试验,发现振能磨湿法粉碎工艺是适合生产重均直径为1.4～0.4 u 粒子的唯一方法。流能磨干法粉碎工艺适合生产粒子重均直径为2.5～1.5 u 的高氯酸铵。振能磨基本上是一个填满磨珠的振动斗。振能磨湿法粉碎工艺的步骤为:把悬浮在惰性媒剂中的高氯酸铵装入振能磨,在控制条件下振动一定时间,然后放出高氯酸铵与媒剂,将高氯酸铵烘干,并回收惰性媒剂。振能磨湿法粉碎工艺己在中间试验和生产规模进行了充分研究,得到了该种工艺的操作特性,其中包括粒子重均直径与磨珠填充量、研磨时间、水分含量、载体/高氯酸铵比率、研磨媒剂类型、温度控制以及高氯酸铵包复涂层的关系。生产规模的湿法粉碎系统现己开始使用,它能生产出满足复合推进剂使用要求的1.4～0.4μ高氯酸铵。
With the development of solid rocket technology, the requirements of high burning rate composite propellant are put forward. High burn rates are achieved by using ammonium perchlorate with a particle weight average diameter below 2.5μ. Through the research and experiment of various kinds of ammonium perchlorate pulverization methods, it is found that the vibration energy pulverization process is the only method suitable for the production of particles with the average diameter of 1.4 ~ 0.4 u. The fluid energy dry grinding process is suitable for the production of ammonium perchlorate with a weight average diameter of 2.5-1.5 u. Vibration energy mill is basically a vibrating bucket filled with beads. The steps of vibrating and grinding the wet crushing process are as follows: ammonium perchlorate suspended in an inert medium is charged into a vibration energy mill, vibrated under controlled conditions for a certain period of time, and then ammonium perchlorate and a vehicle are released, Acid ammonium drying and recovery of inert vehicle. The vibration energy mill grinding process has been fully studied in the intermediate test and production scale, and the operating characteristics of the process have been obtained, including the weight average diameter of the beads and the bead loading, grinding time, moisture content, carrier / high chlorine Ammonium ratio, grinding media type, temperature control, and ammonium perchlorate coating. Production-scale wet grinding systems are now in use and can produce 1.4 to 0.4 μ ammonium perchlorate to meet the requirements of composite propellants.