熔融法分离废弃梯黑铝炸药中的TNT

Separation of TNT from Discarded or Obsolete TNT /RDX /Al Explosives by Melting Method

分离回收是废弃炸药再利用的前期工序。利用梯黑铝炸药中梯恩梯(TNT)、黑索今(RDX)和铝(Al)粉三种组分的熔点差异,以水为加热介质,加热废弃梯黑铝炸药熔化TNT,通过压差过滤,将熔融TNT从废弃TNT/RDX/Al炸药中进行分离。结果表明,以水为加热介质、采用压差过滤,可提高分离过程的安全性和效率。TNT的回收率达76.2%,回收TNT的纯度为94.46%。熔化过程的DSC曲线峰温为81.0℃。回收T NT中的主要杂质是低共熔体系T NT-RDX中的RDX。

Separation and recovery is the previous process of reuse of discarded or obsolete explosives. According to the differences of the melting points of TNT, RDX and AI powder, TNT was separated by pressure differential filtration with water as the heating medium from the discarded or obsolete TNT/RDX/AI explosive. And the properties of explosive before and after separation were studied, Results show that the safety and efficiency of separation process are improved, and the recovery rate of TNT is 76.2%, and the purity of reclaimed TNT is 94.46%. The peak temperature on DSC curve for the melting process of reclaimed TNT is 81.0℃. The main impurities in reclaimed TNT are RDX in the eutectic system TNT-RDX.