Method for preparing reclaimed rubber by continuous low-temperature high shear

Abstract

The invention relates to a method for preparing reclaimed rubber by continuous low-temperature high shear and belongs to the field of waste rubber recycling. The preparation method includes that by means of two or more serially connected screw extruders, preprocessed waste rubber powders are subjected to continuous low-temperature high shear actions of a plurality of the screw extruders to crush a three-dimensional cross-linked network of the waste rubber so as to obtain the reclaimed rubber. According to the method for preparing the reclaimed rubber by continuous low-temperature high shear, used devices are the two or more serially connected screw extruders, the technological process is simple, desulfuration temperatures are low, and the method has the advantages of being energy-saving, environment-friendly, continuous and high in stability of product qualities.

Description

technical field

[0001] The invention relates to a new method for desulfurization and regeneration of waste rubber, in particular to a new method and process for continuously preparing reclaimed rubber at low temperature and high shear by using multiple serial screw extruders, belonging to the field of waste rubber recycling. Background technique

[0002] With the rapid development of the automobile industry, my country's tire-based rubber consumption continues to grow rapidly. At the same time, the production of waste rubber is also increasing. According to statistics, in 2009, my country produced 233 million waste tires, with a weight of about 860. tons. The comprehensive utilization of waste rubber is the core of the circular economy of the rubber industry. It has huge economic and social benefits for saving petrochemical resources, protecting the environment, and alleviating the current situation of my country's high dependence on foreign rubber resources.

[0003] The re...