摘要：为解决实际火炸药生产中因超细含能固体粉料流动性差而造成的加料不畅等问题,采用基于Jenike剪切测试原理的粉体流动测试仪,对超细化后的高氯酸铵(d₅₀=4.284μm)、硝基胍(d₅₀=2.150μm)、硝酸钾(d₅₀=4.794μm)3种含能固体粉料的流动性进行测试,得到相应的流动性参数和流动函数。选用整体流料仓为流动模型,经料仓设计计算公式计算得到高氯酸铵、硝基胍、硝酸钾3种超细含能固体粉料加料仓的最大半顶角θc分别为13.13、8.64、19.20°,最小出料口口径Dc分别为0.42、0.59、0.25 m。试验表明,当加料仓的半顶角θ≤θc,出料口口径D≥Dc,可保证超细含能固体粉料连续均匀稳定加料。

关键词：超细含能固体粉料；粉体流动测试仪；流动性参数； 流动函数；料仓设计

Abstract：In order to solve the poor charging in actual production of fire and explosive that caused by poor flow ability of ultrafine energetic solid powder, a powder flow tester based on Jenike shear test was used to study the flow ability of three kinds of ultrafine energetic solid powder(ammonium perchlorate, d₅₀=4.284 μm, nitroguanidine, d₅₀=2.150 μm,potassium nitrate, d₅₀=4.794 μm). The corresponding mobility parameters and flow functions are obtained. Selected overall flow silo as the flow model, through the silo design formulas, obtained three kinds of ultrafine energetic solid powder feed bin maximum half angle θc are 13.13、8.64、19.20° and minimum diameter of the discharge port Dcare 0.42、0.59、0.25 m respectively. Test shows when the silo's half angle θ≤θc, outlet aperture D≥Dc, can ensure that the ultrafine energetic solid powder continuous uniform and stable feeding.

Keywords: ultrafine energetic solid powder；powder flow tester；flow parameters；flow function；silo design