Sustainable Mining and Metallurgy

There are many ways to recycle waste circuit boards, among which pyrolysis is the most promising method, and the pyrolyzing furnace for industrial application and the optimized type are steel belt furnace. This paper introduced the composition and key technologies of the continous anaerobic pyrolysis system of waste circuit boards of a company, and described the two times of modification and optimization for solving the issues such as the material cannot be cooled, the processing capacity was insufficient, there was no self-heating reuse system, and there was no oil-gas separation system. After the completion of upgrading and modification, the processing capacity of this device can reach the level of ten thousand tons, and after the efficient oil-gas targeted separation, the pyrolysis oil and gas can be recycled efficiently and with high quality, realizing the purpose of energy conservation and emission reduction. The overall technology of the device has reached the international advanced level.