METHOD FOR LEACHING COPPER-SULFIDE ORE USING MIXED BACTERIA

摘要

PPROBLEM TO BE SOLVED: To provide a method for efficiently and economically extracting a copper from a primary copper-sulfide ore mainly containing copper-pyrite under condition having the general-purposing in the actual operating level. PSOLUTION: The method for leaching out the copper from the copper-sulfide ore is performed, that when the copper is leached out from the copper-sulfide ore containing the copper-pyrite, the leaching solution adjusted into 1.6-2.5 pH is used and after inoculating sulfur-oxidizing bacteria, propagated in this leaching solution to 1.010SP8/SPpieces/mL, at the time of starting the leaching iron oxidizing bacteria is inoculated into this leaching solution to perform the leaching-out of the copper. PCOPYRIGHT: (C)2010,JPO&INPIT