| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a gold ore after a pretreatment, which is suitable for collecting gold therefrom by wet processing, the gold ore before the pretreatment containing iron pyrite.SOLUTION: There is provided a gold ore after a pretreatment for collecting gold contained in the gold ore before the pretreatment containing iron pyrite (FeS) of which 60% or more is converted to pyrrhotite after the pretreatment. The pyrrhotite is represented by formula: FeS, where x=0 to 0.2. The gold ore after the pretreatment has twice or more cumulative pore volume of a pore diameter of 3 to 5μm in comparison with that before the pretreatment.</p> |
