METHOD AND DEVICE FOR DECOMPOSING CIRCUIT MEMBER BY WATER IN SUPERCRITICAL FLUID STATE

摘要

A supercritical fluid is formed by heating a liquid-state water (13) sealed along with a circuit member (30) into an airtight container (2) by an internal heating means (4) to heat the water (13) to not lower than a preset temperature and pressurize it to not lower than a preset pressure. A supercritical fluid, being extremely high in intermolecular collision rate, can deliver a specific dissolution power and activate various reactions favorably to thereby satisfactorily and quickly decompose a circuit member (30) which is difficult to be decomposed by a liquid- or gaseous-state water. In addition, an addition of sulfur (14) to a liquid-state water (13) can recover various metals from a circuit member (30) favorably.