Propellant for fireworks and crackers

Abstract

The invention discloses a propellant for fireworks and crackers. The propellant for the fireworks and crackers is prepared from potassium perchlorate, boony carbon, sulphur, an additive, reinforcing agent powder and water according to a certain mass percentage, wherein the additive is magnesium carbonate; and the reinforcing agent powder is sticky rice powder or flour. A preparation process of the propellant for the fireworks and crackers comprises the following steps of: I, mixing the potassium perchlorate, the boony carbon, the sulphur and the additive magnesium carbonate uniformly according to the mass percentage by using a propellant-mixing machine to obtain mixed explosive powder; II, adding the reinforcing agent powder and the water in the mixed explosive powder obtained by the step I, and stirring the mixture and pressing the mixture into an explosive cake; and III, pelleting the explosive cake obtained by the step II, drying the particles in the air, and polishing and screening the particles to prepare the propellant for the fireworks and crackers. The propellant for the fireworks and crackers has the advantages of low hygroscopicity, stable properties, small using amount of the explosive, long quality guarantee period, simple preparation process, low production cost and safe and reliable use and preparation.

Description

technical field [0001] The invention belongs to the technical field of fireworks and firecrackers, and in particular relates to a propellant for fireworks and firecrackers. Background technique [0002] In the prior art, the propellants for fireworks and firecrackers are formulated with the following raw materials in mass percentage: 70% potassium nitrate, 20% charcoal and 10% sulfur, and are successively ground, mixed, tabletted, pulverized, granulated and polished. Finished products are produced after processing. In the propellant, potassium nitrate is used as an oxidant, which has the advantages of low price, safe operation and easy manufacture; the disadvantage is strong hygroscopicity (solubility 246% / 100° C.) and easy deliquescence. Therefore, the shelf life of propellants produced is very short, generally no more than three years, and the quality of propellants produced due to the quality of internal components and manufacturing processes varies greatly, the performa...

AI Technical Summary

Problems solved by technology

In the propellant, potassium nitrate is used as an oxidant, which has the advantages of low price, safe operation, and easy manufacture; the disadvantage is that it has strong hygroscopicity (solubility 246% / 100°C), and is easy to deliquescence

Therefore, the shelf life of the produced propellants is very short, generally no more than three years, and the quality of the propellants produced due to the quality of the internal components and the manufacturing process varies greatly, the performance is extremely unstable, the impact force is not strong, and the use effect In general, it has seriously affected the quality and safety of fireworks and firecracker propellants

Sometimes products that are not set off for one or two years will automatically fail due to deterioration, resulting in scrapped products and great waste. At the same time, the propellant drug produced by this method uses a large amount of medicine and the production cost is high.

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