Oxydant of potassium perchlorate type special for fireworks and method for preparing same

Abstract

The invention relates to a special potassium perchlorate oxidant for fireworks, particularly to an oxidant for producing fireworks and a preparation method thereof. The oxidant contains potassium perchlorate as the main component and no potassium chlorate as well as banned substances prescribed by the state. The key point of the invention is that a surfactant is used for modifying the potassium perchlorate and that other functional materials are added to improve the use and the storage properties of the potassium perchlorate. The oxidant solves the problems such as agglomeration of potassium perchlorate product after long-term storage, difficulty in firing the prepared oxidant, the need of a special high-potassium lead, easy extinguishing of the lead and less loading amount of powder cake. The oxidant comprises 70 to 90 parts of potassium perchlorate, 2 to 8 parts of nitrate, 5 to 8 parts of sulfate, 0 to 8 parts of carbonate, 5 to 8 parts of a density regulator, and 0.1 to 0.3 parts of the surfactant (external application). The oxidant has the advantages that (1) the product has low moisture absorption rate and good looseness and flowability by surface modification; (2) the powder mixed with a reducer has good firing property, and the fireworks are superior to the high-potassium product in ignition rate, paper shredding rate and sound intensity level value; and (3) the produce has lower cost than the high-potassium product and more powder loading amount.

Description

technical field [0001] The invention belongs to the field of chemical and chemical gunpowder preparation, and relates to an oxidizing agent for producing fireworks and firecracker gunpowder and a preparation method thereof. Background technique [0002] For many years, potassium chlorate has been used as an oxidant in the production of firecrackers. Potassium chlorate has the characteristics of easy decomposition to release oxygen, low price, and good performance. However, due to its low decomposition temperature and the release of heat during decomposition, it has the characteristics of explosives. Especially after it is mixed with combustible agents, such as sulfur, organic matter, aluminum powder, etc., the decomposition temperature will be greatly reduced, and the impact and friction sensitivity of the firecrackers made by it are very high, both reaching 100%. According to the investigation of explosion accidents in the fireworks industry More than 60% are related to the...

AI Technical Summary

Problems solved by technology

[0004] ②The price is expensive, 50-80% higher than that of potassium chlorate, and the cost is high;

[0005] ③Its density is more than 50% higher than that of potassium chlorate, so there are less powdered cakes, and because it is difficult to ignite, the firing rate often decreases due to extinguishing, and even fails to meet the national standard

Some also have the disadvantages of poor deflagration performance, or changes in storage performance due to moisture absorption, or high cost, and complicated preparation process