Extraction method of precious metal elements in closed printed circuit board using converter and electric furnace slag

摘要

Although waste printed circuit boards (PCBs) of discarded electronic products contain a considerable amount of precious metal elements, they are currently deemed to be effectively extracted in Korea, but almost entirely discarded or exported to foreign countries.;Therefore, in view of the present invention, it is noted that the composition of converter and electric furnace slag generated during steel smelting is very desirable as a constituent to be added when melting waste PCB by using a noble metal dry melting method to obtain a noble metal element. It is intended to replace the component quicklime or silicon dioxide.