Nanjing Green Gold Giant Rubber & Plastic Hi-Tech Co., Ltd.

Beijing University of Chemical Tehcnology

Chengjie Chen

Liqun Zhang

Jie Wang

Jinwei Shi

Fengxing Ge

Xiaotong Yang

Fengxin Wang

Dongyun Ren

Tao Lu

Zhiyu Zhang

Xiaobo Liu

The invention relates to a method of preparing reclaimed rubber, especially using multi-stage screw extruders, which belongs to the field of recycling and reusing of waste rubber. The rubber powder and softener which were preliminarily mixed are compacted and added into first counter rotating twin screw extruder through thermal insulation and metering apparatus, the softener permeates the waste rubber powder uniformly under the action of temperature in the extruder to finish primary desulfurization of rubber waste powder; add preliminary devulcanized material continuously into second multi screw extruder after cooling by transformation device, rapid desulfurization and regeneration can be achieved by means of activator and shear action; The desulfurized rubber powder is cooled and transported into the third multi-screw extruder in series, the performance of deprocessing can be improved by shear action under low temperature; After extrusion, the recycled rubber is obtained by molding device and cooling device. The whole process is completed under closed oxygen isolation condition, realizing safe, simple and continuous desulfurization regeneration. It is energy saving and environmental protection with excellent properties.

Method of continuous preparation of reclaimed rubber using multi-stage screw extruders

Growing community of inventors

Nanjing, China

Chengjie Chen