Metal ores are naturally occurring rocks that contain metals or metal compounds in sufficient amounts to make it worthwhile extracting them. The method used to extract a given metal from its ore ...

Stop adding the copper oxide when it's in excess - in other words when the black powder doesn't disappear anymore. This means there is no remaining sulfuric acid to react. The next step is ...

In a recent study published in the journal Advanced Powder Materials, the traditional powder metallurgy compaction and sintering method was employed to produce sepiolite-reinforced copper-based ...