Environment friendly fireworks manufacturing using nano scale flash powder

摘要

The flash powder composition is used in the fireworks industry to manufacture the firecracker which consists of pottasium nitrate, aluminium and sulphur powder in 75 microns range. During fireworks crackers bursting, more polluted gases are emitted and thus pollute the atmosphere. In this study, synthesis of flash powders and manufactured the fire crackers with the use of nano flash powders. The particle sizes of the chemicals are 139.7 nm for KNO_3, 94.5 nm for Al and 92.36 nm for S. The nano flash powders are mixed with micron powders in different ratios and crackers are manufactured. The residues are collected and analysed for the metal content. Also gas analysis is done for all the combination of crackers. SEM analysis of the residues is analysed. Results shows that crackers made of 100 % nano flash powder provide less quantity of sulphur dioxide and metal content.