粒径150～180μm球形RDX生产工艺

Manufacturing Process for the Spherical RDX with Particle Size from 150 μm to 180 μm

为了制备粒径为150～180μm球形RDX,研究了RDX在浓硝酸中重结晶的工艺条件。粒径150～180μm球形RDX生产工艺条件为:RDX 35 kg,浓硝酸(97%)135 kg,搅拌速度为240 r.min-1,一次稀释剂为50%稀硝酸,加入量80 kg,滴加速度为8 kg.min-1,温度45℃,保温10 min;二次稀释剂(水)用量126 kg,加入速度14 kg.min-1,温度55℃。采用新工艺生产的RDX晶体中,粒径150～180μm含量达到69.3%。

The recrystallization process of RDX from concentrated nitric acid was studied to prepare the spherical RDX with particle size of 150 -180 μm. The manufacturing process conditions are： RDX 35 kg, concentrated nitric acid （97） 135 kg, stirring rate 240 r - rain-i ,the first diluent： dilute nitric acid （50%） dosage 80 kg,adding rate 8 kg - rain-1 ,temperature 45℃ ,heat preservation 10 rain; the second diluent： water dosage 126 kg,adding rate14 kg ·min^-l ,temperature 55 ℃. Results show that the content of particle size of RDX crystals from 150 μm to 180 μm are 69.3% by using the recrystallization process mentioned above.