| 摘要 |
The purpose of the present invention is to provide a wet-mode nickel oxide ore smelting method for collecting nickel and cobalt employing a high pressure acid leach process, whereby it becomes possible to simplify a production facility and improve durability of the production facility, to reduce cost and environmental risks by compressing the capacity of a tailing dam in which waste materials are to be stored, and to recycle and effectively utilize the waste materials. A wet-mode nickel oxide ore smelting method for collecting nickel and cobalt employing a high pressure acid leach process that comprises an ore treatment step, a leaching step, a solid/liquid separation step, a neutralization step, a zinc removal step, a sulfurization step and a final neutralization step, said method being characterized by comprising step (A) or, alternatively, comprising step (A) and subsequent either one of step (B-1) and step (B-2) or both of step (B-1) and step (B-2). |
