Fireworks are similar in structure to firecrackers, and their structure includes black powder and medicine. In order to achieve good performance, fireworks and shells are filled with a large amount of gunpowder for launching and exploding. For example, a shell with a diameter of 20 centimeters will not explode until it rises to an altitude of 200 meters. The radius of these stars can cover about 80 meters.
The process of making fireworks also includes adding some luminescent agents and coloring agents to enable the fireworks to emit colorful colors. The luminescent agent is a powder of metallic magnesium or metallic aluminum. When these metals burn, they emit strong, incandescent light. In fact, coloring agents are just some metal compounds.
Metal compounds contain metal ions. When these metal ions react violently with oxygen molecules, they see that the compound burns and emits a unique flame color.
In order to protect the environment, many fireworks and firecracker formulations do not use substances containing heavy metals and sulfur, thereby reducing the production of sulfur dioxide and other sulfides. Followed by the reduction of the amount of metal powder, the basic use of organic matter as a combustible, thereby reducing the inhalable particles produced after the combustion of metal powder. The third is to change the system's oxygen balance and combustion temperature by changing the amount of oxidants and combustibles to control the combustion reaction.