硝酸钾抑制硝酸铵AN_Ⅳ～AN_Ⅲ相变的效应及其在粉状乳化炸药中的应用  

The Effect of Potassium Nitrate on Inhabiting AN_Ⅳ~AN_Ⅲ Phase Transition of Ammonium Nitrate and Its Application in Powdery Emulsion Explosive

作　　者：张凯铭[1,2] 倪欧琪[1,2] 俞珍权[1,2] 

机构地区：[1]南京理工大学化工学院,江苏南京210094 [2]国家民用爆破器材质量监督检验中心,江苏南京210094

出　　处：《爆破器材》2012年第3期4-7,共4页Explosive Materials

摘　　要：探讨了硝酸钾抑制硝酸铵ANⅣ～ANⅢ相变的效应,并且研究了其在提高粉状炸药抗结块性中的作用。通过DSC、高低温试验和抗压强度测试证实,在硝酸铵中添加2%硝酸钾能完全抑制硝酸铵的ANⅣ～ANⅢ相变,能够提高粉状乳化炸药中硝酸铵的结晶稳定性,降低药体的抗压强度,有效地减少结块现象。This paper studies the effect of potassium nitrate （ KNO3 ） on inhabiting the ANr- AN phase transition of ammonium nitrate （ NH4NO3 ） and its application on improving anti-caking property for powdery emulsion explosive. Ex- periment results from differential scanning calorimetry （ DSC）, high-low temperature and compressive strength test show that the addition of 2% KNO3 could inhabit ANn - ANm phase transition totally, improve the crystalhzation and thermal stability of NH4 NO3, reduce the compressive strength of powder emulsion explosive and resolve its caking phenomenon effectively.

关 键 词：硝酸钾 硝酸铵 相变 粉状乳化炸药 

分 类 号：TD235.21[矿业工程—矿井建设] TQ560.72[化学工程—炸药化工]