We received an inquiry from a South African client who is eager to establish a waste tire recycling production line in South Africa. The raw materials he has at hand mainly come from passenger cars, trucks, light commercial vehicles, and industrial tires. Thanks to the abundant supply of waste tires in his region, he hopes the processing capacity of the production line can exceed 1 ton.

The first step in the physical recycling tire process is shredding. You’ll use the double-shaft shredder. A recommended model for 1 ton processing capacity is the YSX double-shaft shredder, which features a powerful motor with a power output of around 55 – 75 kW. It is designed to handle various sizes and types of tires, efficiently tearing them into smaller pieces.

The shredded material then passes through a series of screening equipment. For instance, a vibrating screen with a screen size of about 3 – 5 mm mesh is used to separate out the finer particles from the coarser ones. This sieving process helps to ensure the uniformity of the material for further processing. After screening, the rubber granules can be further processed and refined according to different market demands, such as being used in the production of rubber mats, playground surfaces, or modified asphalt.

In the pyrolysis process, the waste tires are first loaded into a pyrolysis furnace. A suitable pyrolysis furnace for this application, operates at a temperature range of 400 – 600 °C.

Inside the furnace, under the effect of high temperature and in the absence of oxygen, the tires break down chemically. The gaseous products are then directed to a condensation system. The condensation equipment, with a heat exchange area of approximately 20 – 30 square meters, cools down the gases to separate out the condensable components, mainly oils.

Meanwhile, a dust removal device, such as a bag house filter with a filtration efficiency of over 99%, is installed to capture and remove the fine particulate matter generated during the pyrolysis process, ensuring that the exhaust gas meets environmental standards.

The solid residue left in the pyrolysis furnace, mainly carbon black, can be further processed and sold to industries such as the rubber and ink manufacturing sectors. The pyrolysis oil obtained can be used as a fuel substitute in some industrial boilers or further refined for other applications.

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