First used tire processing plant in Russia with cryogenic fine grinding

Together with our Saxon client, we implemented a demanding consulting contract.

The order involved the search for a joint partner with a suitable area and subsequent assignment, as well as all the necessary permits for the new plant in Russia.

Profile of the project

Description of the process for the recycling of old tires with cryogenic fine grinding

The plant is used to shred trucks and cars – Old tires in a ratio of
80% to 20%. Highly cleaned rubber granules are produced in 4 fractions. The fractions produced have a grain size of 0 to 0.2 mm, 0 to 0.8 mm, 0.8 to 2.5 mm and 2.5 to 4 mm. Secondary products are steel wire and PA fabric.

The line is designed for 4-shift operation with an input throughput of up to 4 t / h.

The loading the system is done manually. The further technological processing steps take place in an automatic sequence up to the manual bagging of the finished rubber granulate in big bags.

The main technological processing steps are:

  • Crushing the entire tire
  • Cleaning the rubber (separation of steel, fabric, foreign matter)
  • Cryogenic fine grinding
  • Classifying the rubber granulate into the individual fractions

The shredding is done mechanically in three stages by different shredders. After each shredding step, the steel that is released is separated by magnetic separators and the tissue by heavy material inspection. Fine grinding is carried out by cooling the rubber using liquid nitrogen and then breaking up the embrittled material. The classification into the individual fractions is done by four vibrating sieves.

Different processing machines are used in this process, which are linked together by transport units. 

The following machines are used in the processing process:

Shredding: Twin-shaft shredders, single-shaft shredders, granulators, pin mill
Sieving: Circular vibrating sieves in different configurations
Cleaning: Magnetic separator, Air classifiers, hybrid classifiers, cone classifiers, dry filters, wet filters, separation tables
Transport: Conveyor belts, elevators, screw conveyors, pneumatic conveyors, spiral conveyors, screw conveyors, cellular wheel locks

Staff-eye GmbH, 2020