Can Waste Tires Be Put Whole Into The Machine For Pyrolysis? Is A Tire Cutter Needed?

In the waste tire recycling industry, efficient pyrolysis has become a key path to achieve a win-win situation for both environmental protection and the economy. However, many customers are often confused about feed size when choosing equipment: Can whole tires be fed directly? Is a cutter necessary? This not only affects daily production capacity but also the overall return on investment. Actually, the feedstock requirements of the tyres for pyrolysis machine depends on machine types.

Tyre pre-treatment by tyre cutter for tyre pyrolysis process

Henan DOING Company, as a professional manufacturer specializing in pyrolysis equipment, will provide a detailed analysis of feed requirements based on three types of equipment: batch, semi-continuous, and fully continuous, to help you optimize your waste tire processing flow and achieve higher oil output and steel wire recovery rates.

1. Batch Type Tire Pyrolysis Plant:

For most standard-sized waste tires, our batch type pyrolysis reactors can usually be fed directly. The diameter of the feed inlet of DOING waste tyre pyrolysis machine is approximately 1.4 meters, which is designed to be spacious and easy to operate.

Is a tyre cutter needed? Technically not necessary, but we strongly recommend that customers perform simple cutting or crushing. This can significantly increase loading capacity and daily processing capacity: fragmented tires can be stacked more tightly than whole tires, and smaller tire pieces are heated more evenly, resulting in a more complete pyrolysis reaction and contributing to the production of higher quality pyrolysis oil and carbon black.

Batch Type tire pyrolysis equipment feed demonstration

2. Semi-Continuous Tire Pyrolysis Equipment:

Whole tires cannot be fed in; they need to be crushed into 10-16mm rubber powder by tyre cutting and shredding machine. Semi-continuous equipment typically uses a screw feeder for sealed feeding. Whole tires are large and irregularly shaped, making it impossible to pass through a screw feeder. Only after being crushed into small pieces can continuous and uniform feeding be achieved, and a multi-stage airlock mechanism is needed to ensure an oxygen-deficient, sealed environment inside the furnace. Therefore, pre-treatment with a cutter/crusher is necessary to enable automatic continuous feeding.

Semi-continuous tire pyrolysis equipment feed demonstration

3. Fully Continuous Tyre Pyrolysis Machine:

Similarly, whole tires must be cut, especially large tires (>1.2m, requiring ring cutting or wire stripping first) before feeding to the fully continuous pyrolysis machine. Automatic feeding requires 3-8mm steel-free rubber powder. This raw material allows for uniform heating, improving overall efficiency and oil purity, and supports 24/7 operation. Henan DOING Company’ s fully continuous tyre pyrolysis equipment achieves high automation and a steel wire recovery rate >95%, suitable for large-scale production.

Fully continuous tire pyrolysis equipment feed demonstration

The Value of Tire Shredding Before Pyrolysis Process:

Implementing tire shredding or crushing as a pre-treatment step significantly enhances the overall waste tire oil pyrolysis process. Beyond optimizing feeding and reaction efficiency, it ensures more consistent product quality (higher grade pyrolysis oil and purer carbon black). Crucially, this pre-treatment also contributes to lower operating costs and reduced maintenance by preventing equipment blockage and uneven wear, thereby extending the lifespan of your pyrolysis machine and boosting the project's long-term profitability. Furthermore, if the steel wires are extracted and the tires are shredded prior to entering the reactor, they will not become contaminated with excessive carbon black; this results in higher purity, which in turn commands a higher resale price for the recovered materials.

Products obtained by pyrolysis of crushed tires

Henan DOING Company offers a range of waste tyre recycling pyrolysis equipment tailored to different processing needs, including specialized waste tyre pre-treatment options to effectively process tires of various sizes, such as waste tyre shredder, tyre steel wire drawing machine, tyre cutter, tyre to rubber powder production line, etc. If you have any questions about tire shredding or need customized tire pyrolysis solutions, please contact us. We offer free consultations.