褐铁矿型红土镍矿高温氯化焙烧提取镍钴  

Extraction of Nickel and Cobalt from Laterite Nickel Ore by High Temperature Chlorination Roasting

作　　者：刘琦 马辉 郭持皓 LIU Qi;MA Hui;GUO Chihao(BGRIMM Technology Group,Beijing 100160,China)

机构地区：[1]矿冶科技集团有限公司,北京100160

出　　处：《有色金属（冶炼部分）》2024年第12期1-7,共7页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家重点研发计划项目(2021YFC2902503);矿冶科技集团有限公司青年科技创新基金项目(04-2333)。

摘　　要：镍作为重要的战略性稀有金属资源,其高值化提取利用具有重要意义。以褐铁矿型红土镍矿为研究对象,开展了高温氯化焙烧回收镍钴的试验研究,为高值化提取利用褐铁矿型红土镍矿中镍、钴提供新思路。考察了氯化温度、氯化时间、还原剂、氯化剂用量和二氧化硅用量对镍、钴、铁氯化挥发率的影响。试验得到的最优条件如下:原料经900℃预焙烧2 h后,添加36%的氯化钙、12%的二氧化硅及1%焦炭,在1200℃高温氯化焙烧2 h。镍、钴、铁的挥发率分别为85.87%、77.26%、7.05%。Nickel is an important strategic rare metal resource,and its high value extraction and utilization is of great significance.The recovery of nickel and cobalt from limonite-type laterite ore was studied by high temperature chlorination roasting,which provides a new idea for extracting and utilizing nickel and cobalt from limonite-type laterite nickel ore with high value.The effects of chlorination temperature,chlorination time,reducing agent,chlorination agent dosage,and silica dosage on the volatilization rate of nickel,cobalt,and iron were investigated.The optimum conditions obtained are as follows:After the raw material was pre-calcined at 900℃ for two hours,36% calcium chloride,12% silica and 1% coke are added,and chlorination roasting at 1200℃ for two hours.The volatilization rate of nickel,cobalt and iron is 85.87%,77.26% and 7.05%,respectively.

关 键 词：氯化挥发 红土镍矿 褐铁矿 

分 类 号：TF815[冶金工程—有色金属冶金] TF816