Waste Tire Pyrolysis: Multi-Industry Value

Driven by the "dual carbon" goals and resource recycling strategies, the scrap tire recycling industry is transforming from a traditional "environmental necessity" to a "value creation" sector. Pyrolysis technology, as a core processing method, leverages the diverse applications of its products to successfully connect with the industrial chain across multiple industries, including steel mills, fuel plants, and the plastics industry, creating a continuously expanding profit landscape for tire recycling projects.

This cross-sector resource synergy not only addresses the environmental challenge of "black pollution" from scrap tires but also generates significant economic value through industrial integration, transforming tire recycling from a cost-burdening industry into a profit-generating one.

From the perspective of steel mills, the carbon black produced by pyrolysis of scrap tires has become a key driver of profit growth. In the steelmaking process, traditional recarburizers rely heavily on non-renewable resources such as petroleum coke and graphite, resulting in high procurement costs and difficulty in accurately controlling the stability of their carbon content.

After purification, thermal carbon black can reach a carbon content exceeding 85%, while also possessing low sulfur and ash content, precisely meeting the high-quality recarburizer requirements of modern steelmaking.

For example, a medium-sized steel mill may require approximately 50 tons of recarburizer daily. Replacing 30% of traditional recarburizers with thermal carbon black could reduce procurement costs by 800-1000 yuan per ton, saving the steel mill 12,000-15,000 yuan per day. For tire recycling companies, carbon black can command a unit price of 2,000-3,000 yuan per ton, and market demand is stable. 

According to the "China Steel Industry Development Report," the domestic steel industry's recarburizer market size will exceed 20 billion yuan in 2024, with the penetration rate of environmentally friendly recarburizers being less than 15%. This suggests significant potential for growth in the use of thermal carbon black in steel mills, providing a long-term, stable source of profit for tire recycling projects.

Cooperation with fuel plants further expands the profitability of tire recycling projects. The thermal cracking process of scrap tires produces pyrolysis oil, whose main components are similar to diesel and heavy fuel oil. After refining, it can be supplied directly to fuel plants as fuel oil or used to blend into non-standard diesel.

Currently, the domestic market for industrial fuel oil is booming, especially in the chemical, shipbuilding, and power generation sectors, where demand for low-cost fuel oil continues to grow. Data shows that 1 ton of scrap tires can produce approximately 0.4-0.5 tons of pyrolysis oil. Based on the average market price of 5,000 yuan per ton, pyrolysis oil alone can generate direct revenue of 2,000-2,500 yuan per ton of scrap tires. More importantly, pyrolysis oil has lower carbon emissions than traditional fossil fuels, meeting the needs of fuel plants' low-carbon transition.

To reduce raw material costs, some fuel plants have even signed long-term procurement agreements with tire recycling companies, creating a win-win model of "stable supply + competitive prices." This in-depth collaboration not only ensures sales for pyrolysis oil but also reduces transportation and storage costs for tire recycling companies through large-scale procurement, further increasing the project's profit margin.

In the plastics industry, the application of pyrolysis products demonstrates the closed-loop value of a "circular economy." In addition to carbon black and pyrolysis oil, the pyrolysis of scrap tires also produces steel wire and combustible gas.

After rust removal and cutting, the steel wire can be used as a reinforcement material in the production of plastic pipes, plastic pallets, and other products, replacing some metal materials and reducing the production cost of plastic products. The combustible gas can be directly used to heat the pyrolysis furnace, achieving energy self-sufficiency and reducing tire recycling companies' reliance on external energy.

For example, in plastic pipe production, adding 10%-15% pyrolysis steel wire particles can not only increase the compressive strength of the pipe by 8%-10%, but also reduce the raw material cost by approximately 300 yuan per ton. For plastic product manufacturers, this "low-cost, high-performance" raw material is extremely attractive.

For tire recycling companies, the unit price of steel wire can reach 1,500-2,000 yuan per ton, with virtually no additional processing costs, creating an additional profit point for the project. Furthermore, self-sufficiency in combustible gas can reduce energy costs for tire recycling projects by over 30%, further reducing operating costs and boosting overall profitability.

Notably, as demand for environmentally friendly raw materials continues to grow across various industries, profit growth opportunities for tire recycling projects continue to expand. For example, high-purity thermal carbon black can be used to produce lithium battery anode materials, with a market price exceeding 10,000 yuan per unit, representing a 3-5 times increase in value compared to traditional carbon black.

Refined pyrolysis oil can also be used as a chemical feedstock for the production of basic chemical products such as ethylene and propylene, entering the high-value-added chemical industry chain.

This shift in value from "basic applications to high-end manufacturing" has expanded tire recycling projects beyond the single focus of "resource recovery" to encompass areas such as "new material research and development" and "high-end energy supply," creating a diversified profit matrix.