低品位褐铁矿型红土镍矿湿法工艺研究进展及应用前景展望  

Research Progress and Application Prospect of Hydrometallurgy for Low Grade Laterite Nickle Ore

作　　者：李丹 LI Dan(China Metallurgical Group Corporation,Beijing 100028,China;Ramu Nico Management(MCC)Limited,Beijing 100028,China)

机构地区：[1]中国冶金科工集团公司,北京100028 [2]瑞木镍钴管理(中冶)有限公司,北京100028

出　　处：《湿法冶金》2024年第4期345-356,共12页Hydrometallurgy of China

摘　　要：阐述了还原焙烧—常压氨浸、高压酸浸(HPAL)湿法冶金技术处理低品位褐铁矿型红土镍矿的工艺特点、工业应用现状及研究进展,总结了三代HPAL技术的发展状况,介绍了镍钴沉淀富集技术及应用,分析了H2S沉淀、MgO沉淀、直接NaOH沉淀工艺的优点与不足,探讨了NaOH转碱转晶种新沉淀工艺的成效,并对红土镍矿湿法冶金工艺的发展前景进行了展望。The characteristics,industrial application status and research progress of hydrometallurgy for low grade laterite nickle ore by reduction roasting—normal pressure ammonia leaching and high-pressure acid leaching(HPAL),as well as the development of three generations of HPAL technology are summarized.The nickle-cobalt precipitation and enrichment technology and the application are introduced.The processes advantages and disadvantages of the H 2S precipitation,MgO precipitation,direct NaOH precipitation are analyzed.The effectiveness of new precipitation process with alkali conversion and crystal seed activation has been explored.The development prospect of laterite nickel hydrometallurgical process is also prospected.

关 键 词：红土镍矿 湿法工艺 还原焙烧—氨浸 HPAL NaOH转碱转晶种沉淀 尾渣 研究进展 展望 

分 类 号：TF803.21[冶金工程—有色金属冶金] TF815