The invention discloses a
processing technology of special rubber for radial tires. The process first divides the recovered rubber raw materials into two grades according to the evaluation results of the enterprise quality inspection standards, and breaks them into rubber blocks of 40cm×10cm×8cm~50cm×15cm×20cm respectively, and divides the graded rubber raw materials after removal of impurities by 1 ~3:1~3 weight ratio mixing. The mixed
rubber material is crushed in the first stage, floated and stirred, and the secondary crushed, floated and stirred, the floating washing time must be ≥ 20min, and then the mixed
rubber material is subjected to two-stage
extrusion floating washing, and the floating washing time must be ≥ 12min, Make the rubber into a gelatinous
mass. The
rubber material is treated with one to four stages of creping to make the rubber material into a continuous sheet with a thickness of 6-12mm, and the creped rubber material is granulated to make rubber particles with a
diameter of 6-12mm. The colloidal particles are pumped and vibrated, dried at 82-108°C according to the standard of 4-6t / h rubber material, and then cooled to
room temperature. The process improves the
impurity removal rate of the equipment, avoids damage to the rubber structure due to excessive
processing, simplifies the equipment configuration of the
production line, reduces the overall
failure rate, reduces the amount of crushed rubber, and improves production efficiency.