"Black pollution" harms the world With the development of the automobile industry, more and more "black pollution" from waste tires is threatening the living environment of all human beings. According to statistics, about 1.5 billion tires are scrapped every year around the world, only The United States produces nearly 300 million used tires every year, and after decades of accumulation, there are up to 3 billion used tires in the United States. China is the third largest tire producer in the world. In 2000, the tire output exceeded 100 million. Second to the United States and Japan, 40 million waste tires are produced each year. You can see waste tire tire accumulation points that stretch for thousands of kilometers in the suburban junctions of big cities such as Beijing and Shanghai. Long-term storage of used tires in the open air not only occupies a large amount of land, but also can easily breed mosquitoes, carry the acute infectious disease-dengue fever bacteria, and cause acute illness after being exposed to sunlight and rain. In addition, used tires are deteriorating the natural environment, One of the most harmful wastes that destroys the growth of vegetation, affects human health, and endangers the earth's ecological environment, this "black pollution" causes far-reaching harm In the "white pollution." Therefore, the more industrialized countries are looking for the best waste tire recycling methods.
Recycling technology is constantly innovating. China overcomes technical difficulties. Waste tires are insoluble or refractory polymer elastic materials. Their high elasticity and toughness are basically unchanged in the range of -50 ° C to + 150 ° C. Their macromolecules are decomposed to not affect The extent to which plants grow in the soil takes centuries, can be described as "stubborn." Burn it, the smoke and carbon monoxide released by it will seriously pollute the atmosphere. Adopting chemical method to deal with it also causes secondary pollution. Therefore, the usual methods of solid waste disposal, such as landfilling and incineration, are not applicable to waste tires. Because it is much more difficult to recycle used tires than other solid wastes, how to recycle them and turn them into treasures is in the exploration stage. The treatment methods are also different: except for a few countries such as Canada, which are used as fuel, The method of recycling waste rubber is mainly a mechanical method of making rubber powder. The use of rubber powder continues to expand. The market has broad prospects. There are roughly two ways to use waste tires, one is to make recycled rubber, and the other is to make rubber powder. Practice has proved that fine rubber powder has the elasticity and re-crosslinking properties of natural rubber. It can be widely used in the production of tires and other rubber products, plastic modification, and building material modification. There are thousands of products developed with it. With the development of science and technology The fields of application and social progress continue to expand. Fine rubber powder modified asphalt is used for highway construction, and 10,000 waste tires (two lanes) will be consumed per kilometer. The rubber asphalt pavement paved with a thin layer is about twice as thick. Pure asphalt pavement can reduce noise, improve the abrasion resistance and cold resistance of the pavement, and extend the service life by more than double. This technology has begun to be used in China's highway construction, which will generate a huge market demand. Superfine rubber powder (less than 100μm) is used for new rubber and plastic materials, building decoration materials, waterproof materials, sound insulation materials, special spraying, etc., and will become a new material that replaces similar products on the market. (American amst standard) The best cheap material, the 4 million children's playgrounds in the United States that have not yet been transformed, have a market of 10 billion US dollars. At the same time, rubber powder can be used as a filler for sports fields to increase the flexibility of the track. At present, rubber powder has been used in track and field, tennis courts, and sports mats. This market demand is showing a rapid growth trend and the prospect is very broad. In China, the current purchase price of used tires is generally between 400-600 yuan / ton, and no one has purchased them in many places. The price of radial tires is even lower, generally 150-200 yuan / ton, which is processed into fine rubber powder. The total cost is about 1200 yuan / ton, and its selling price is above 2,000 yuan / ton, which shows that the profit is quite high.
With government support, mature technology, and investment development, the country invested 700 billion yuan in environmental protection during the 10th Five-Year Plan period. In the next five years, the environmental protection industry will take off. We should clearly recognize the recycling of used tires. Regardless of policy, technical equipment and market perspective, the current investment and development is the right time!
First of all, with the continuous improvement of life, people's awareness of environmental protection has increased, governments of various countries have paid more attention to environmental protection, and economically developed countries have adopted various measures such as legislation, establishment of expert institutions, financial subsidies, and tax-free concessions to fully support the recycling of used tires. . Quebec, Canada, established the Waste Tire Recycling Management Committee as early as 1992, and passed legislation to collect in advance a processing fee of $ 4 from each new tire sold and delivered to the management of a fund organization under the committee, and Ensure that the fund is used for recycling of used tires. In 1994, the United States legislation stipulated that, with state-sponsored asphalt roads, asphalt must contain 5% rubber powder. France will implement a garbage recycling policy from 2002, requiring all household and industrial waste, including waste rubber, to be recycled. In Finland, the recycling rate of used tires has reached more than 90%. In addition to strict laws, the Finnish government is also assisted by technological development and market cultivation. In addition, developed countries also provide financial subsidies and preferences for the recycling of used tires. I. The purchase of used tires is free of charge, and is usually provided directly by local fixed tire purchasers (equivalent to domestic waste purchase stations). Second, the disposal of waste tires does not cost money, but subsidies. For example, the US government provides a subsidy of 2.5 to 4 US dollars per waste tire, while the Canadian government grants a subsidy of 2 Canadian dollars, and Japan sells the raw materials until they are processed into fine rubber powder and sells them at a cost of 90 US dollars per ton. 3. Enterprises dealing with waste tires enjoy a "zero" tax system. In this way, the enterprise has obtained the profit margin of normal operation and has the stamina for sustainable development. The Chinese government will also increase its support for the environmental protection industry. Last year, the eight committees, ministries, and bureaus, including the State Economic and Trade Commission, jointly issued the Opinions on Accelerating the Development of Environmental Protection Industries. The Opinions clearly stipulated that To further improve the preferential policies for tax reduction and exemption for comprehensive utilization of resources, such as preferential policies for the reduction and exemption of value-added tax for comprehensive utilization of products. "Recently, the State Economic and Trade Commission formulated the" Tenth Five-Year Plan "for the recycling of renewable resources. During the period, 700 billion yuan will be invested for environmental protection. As for rubber powder enterprises, a policy has been implemented since May 1 last year, that is, such enterprises can deduct input tax at 10%. China has now joined the WTO. In order to be in line with international regulations, some related environmental protection preferential policies will be promulgated and implemented continuously, and the environmental protection industry will get more preferential treatment.
Second is technology and equipment. The current waste tire crushing equipment has made breakthrough progress, and it can also crush waste tires into fine rubber powder at room temperature. And the equipment investment is small, the production cost is very low, the process is stable, the noise is small, basically no dust, easy maintenance, long life, high degree of automation, cause vibration in the industry, and have been praised by experts.
Furthermore, there is a vast market for the recycling of used tires. Many countries are in their infancy, and they are also emerging emerging industries in China, and their prospects are very broad. At present, China's annual rubber output is about 450,000 tons, and the amount of rubber used is about 1.05 million tons. The annual gap is about 600,000 tons, which depends on large imports. The world ’s rubber gap is also about 2 million tons. With the development of the economy, And the development trend of the rubber industry, the contradiction between supply and demand is even more prominent. At present, the average amount of glue used by Americans is 20 kg, while that of China is only 0.8 kg. Therefore, the annual rubber gap has increased to about 1.8 million tons. The supply of fine rubber powder is in short supply abroad, and demand exceeds supply, which can create a lot of foreign exchange for the country. The value of recycled fine rubber powder from used tires cannot be underestimated. A small country like Finland produces only 2.2 million waste tires each year. This industry creates wealth of 1.2 billion US dollars each year and provides 5,000 jobs for the society. China produces more than 40 million waste tires every year, which is almost 20% of the Netherlands. It can be imagined how many employees this will solve and how much wealth the country will create!
In short, various conditions for the production of fine rubber powder from used tires have matured, and those who invest in this emerging industry will definitely obtain fruitful results!