Progress in Research of Comprehensive Utilization of Nonmetallic Materials from Waste Printed Circuit Boards

The progress in current research in and abroad on recycling and reuse of nonmetallic materials from waste circuit boards was introduced, and technical principle and research situation of tradition techniques adopted for resource modification, including energy recovery techniques, solution recovery techniques, supercritical techniques, physical recovery techniques and pyrolysis techniques were discussed in details in this paper. And finally, it is concluded that comprehensive use of various methods is the tendency for recycling non-materials from waste circuit boards after exploring disadvantages and advantages of these five approaches.