Scrap tires are called "black pollution". If not disposed of properly, it will lead to environmental pollution and waste of resources. At present, there are more and more waste tires in China, and the number of waste tires has ranked first in the world. Recycling of waste tires will be a development direction in the future. At present, pyrolysis of waste tires is a popular method for processing waste tires. Pyrolysis of waste tires can crack waste tires into tire oil, carbon black, steel wire and combustible gas. The carbon black after thermal cracking of waste tires is also called pyrolysis crude carbon black.
The raw materials of tires are mainly composed of natural rubber and synthetic rubber, carbon black, copper cord, cord fabric, carbon black, etc. Among them, in order to meet the continuously improving material performance requirements, rubber is moving towards high strength, wear resistance, stability and aging resistance. direction, but at the same time caused the problem that the discarded rubber cannot be naturally degraded for a long time, so the disposal of waste tires is one of the most serious problems currently facing.
Carbon black after thermal cracking of waste tires belongs to pyrolysis coarse carbon black, carbon black accounts for 30%-35% of tire pyrolysis products, is the second largest product of tires, and can be used for secondary use.
After proper treatment and reasonable processing and utilization, cracked coarse carbon black can replace part of ordinary carbon black in tires, although its reinforcing performance on rubber is not as good as that of ordinary carbon black. It can also be used in other rubber products besides tires. , Such as conveyor belts, transmission belts, shoes, rubber hoses, etc. After treatment, cracked crude carbon black can also replace pigment carbon black for coloring plastics, inks, etc.