| 摘要 |
<p>A method for extracting Ni and Co from laterite using hydrochloric acid comprises: mining, preparing ore, leaching ore, separating, recovering leach residues, precipitating Ni from leach solution, calcining, and regenerating and recycling hydrochloric acid. The method extracts intermediate product containing Ni and Co, recovers, regenerates and recycles hydrochloric acid, and recovers washing liquor for recycle. The method could extract Ni and Co at a high leaching velocity and high leaching efficiency without emission and contamination, and could further obtain Fe and Mg etc. In addition, the method is simple in process and low in cost.</p> |
