利用自行设计建立的20 L球形爆炸装置和引进的最小点火能测试系统对黑火药粉尘的爆炸特性进行实验研究。结果表明：粒度对黑火药的爆炸极限影响不大；随着黑火药粉尘浓度的增大，黑火药粉尘的最大爆炸压力和最大压力上升速率呈线性增大；黑火药粉尘的最小点火能随着粉尘浓度的增大而降低，当粉尘达到某一浓度后，浓度的增加对点火能量的影响不大；黑火药的最小点火能受环境湿度影响很大，当达到一定湿度后，黑火药粉尘将不能被点着。
The explosion characteristics of black powder dust were studied experimentally by using the 20 L spherical explosion device designed by ourselves and the minimum ignition energy measuring device. The results show that the effect of particle size on the lower explosion limit is not noticeable. The maximum explosion pressure and maximum rise rate of pressure increase linearly with increasing the concentration of black powder. The minimum ignition energy decreases greatly with increasing the concentration. When the concentration reaches a certain value,the effect of concentration on the minimum ignition energy is not noticeable. The ambient humidity has great effect on the minimum ignition energy of black powder. When the ambient humidity reaches a certain value,the black powder dust can not be ignited.
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