Pyrolysis experiments of a typical printed circuit boards has been carried out under various conditions in a laboratory installation Liquid yield of 15%～21%, gas yield of 15%～20% and solid yield of about 60% were obtained The liquid products had high gross calorific values that might be recycled as fuel oils after simple treatment CO, CO 2 and N 2 were the main constitutes of the gas products Using combustion method, organic carbon of 7% in the solid products could be removed Then the solid products, which contained high purity fiberglass and CaCO 3, could be reused as filling materials in the process of SMC production In addition, the effects of final pyrolysis temperature (FPT) and particle size on pyrolysis products had been investigated The yield of gas products will be increased under high temperature and with powder
Pyrolysis kinetics of a kind of printed circuit board waste was investigated under various conditions with thermogravimetry (TG) in the present work. The dynamic thermogravimetric analysis curve and its derivative were analyzed to obtain information on the kinetic parameters. The data from experiments were processed to determine the pyrolysis mechanism of printed circuit board and the kinetic parameters such as activation energy E(kJ/mol) and pre-exponential factor A(1/min). A tube-type apparatus was used to pyrolyze printed circuit board waste under different conditions,and the products were analysised by using FTIR and EPMA.
