A tire is a ground-rolled, circular elastic rubber product that is assembled on various vehicles or machinery. The waste tire is a tire that is discarded due to breakage or other reasons and is no longer used.
The tires are usually mounted on metal rims to support the body, cushioning external impacts, achieving contact with the road surface and ensuring the vehicle's driving performance. Tires are often used in complex and demanding conditions. They are subjected to various deformations, loads, forces and high and low temperatures during driving, and therefore must have high load bearing properties, traction properties and cushioning properties. At the same time, it is required to have high wear resistance and flex resistance, as well as low rolling resistance and heat build-up. Half of the world's rubber consumption is used in tire production, showing the ability of tires to consume rubber.
Waste tires are a resource that can be reused. The recycling and comprehensive utilization level of used tires is one of the important signs of a country's economic development. Waste tires, as solid waste, are placed in the open air to affect the environment and are called "black pollution." Its recycling is a worldwide problem. China is one of the countries with the largest amount of rubber in the world. The shortage of rubber resources has severely restricted the rapid development of China's rubber industry. It uses waste tires to produce high-performance rubber raw materials in a clean and non-polluting manner. Part or all of the substitute for nature.
In recent years, the production of waste tires has maintained steady growth under the continuous growth of automobile sales. According to Boss data released "2017-2022 China tire renovation industry development model depth analysis and industry trends research report" shows: in 2015 global tire production was 40.742 million tons, waste tire recycling was 29.334 million tons.
At present, the global waste tire industry is unevenly developed. In developed regions and countries such as Europe and the United States, the recovery rate of waste tires has reached more than 80%, and the recovery rate of waste tires in emerging markets has not reached the average level.
While developing advanced scientific and technological high-tech, developed countries pay more and more attention to the utilization and development of waste tire resources. Governments have successively adopted legislation to set up specialized agencies and implement incentive policies for the recycling of used tires. As early as during the Second World War, recycled rubber was regarded as a strategic resource due to the shortage of rubber. In the 21st century, the rubber powder industry was upgraded from the traditional “waste utilization, repair and waste” to the emerging environmental protection industry. Production is regarded as a new industry with high technological content, large market potential and broad prospects.