球磨法制备高活性铝粉

发布时间：2018-07-07 12:10

本文选题：球形铝粉 + 活性铝含量　；参考：《中国粉体技术》2017年03期

【摘要】：为提高含铝炸药爆热性能,探索高活性金属铝粉的制备方法,采用立式球磨机对球形铝粉进行处理,研究球磨机的搅拌转速、球磨时间、助磨剂的配比对活性铝粉粒径、形貌、热性能的影响;利用扫描电子显微镜、激光粒度测试仪和同步热分析仪检测活性铝粉形貌、粒径及热分解特性;采用热分析参数法测定活性铝含量。结果表明:制备活性铝粉的最佳条件为搅拌转速1 100 r/min,研磨时间4 h,助磨剂占铝粉质量比4%;制备的活性铝粉粒径d_(50)为1.108μm,片状,活性铝质量分数由90.42%增加到98.42%;用于含铝炸药中,爆热值由6 805 kJ/kg增加到7 642 kJ/kg。
[Abstract]:In order to improve the thermal performance of aluminized explosives, the preparation method of high active metal aluminum powder was explored. The vertical ball mill was used to treat spherical aluminum powder. The influence of stirring speed, ball milling time and the ratio of grinding aids on the particle size, morphology and thermal properties of active aluminum powder were studied. The analyzer measured the morphology, particle size and thermal decomposition characteristics of active aluminum powder, and determined the content of active aluminum by thermal analysis parameters. The results showed that the optimum conditions for the preparation of active aluminum powder were 1100 r/min of stirring speed, 4 h for grinding time, 4% for the mass ratio of aluminum powder and 1.108 micron m, flake and active aluminum. Increased from 90.42% to 98.42%; for aluminized explosives, the detonation heat value increased from 6805 kJ/kg to 7642 kJ/kg..
【作者单位】：南京理工大学国家特种超细粉体工程技术研究中心;山西北方兴安化学工业公司;
【基金】：国防火炸药科研专项项目,编号:AS03141
【分类号】：TQ560.6

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