第 23 卷第 2 期中国有色金属学报 2013 年 2 月
The Chinese Journal of Nonferrous Metals Feb. 2013
文章编号:10040609(2013)02051006
硫酸氢铵硫酸化焙烧法红土镍矿提取镍钴
石剑锋,王志兴,胡启阳,郭华军,李新海,彭文杰
(中南大学冶金科学与工程学院,长沙 410083)
摘要:针对传统硫酸化焙烧红土镍矿能耗高、设备腐蚀大等缺点,提出硫酸氢铵焙烧循环工艺。以菲律宾红土
镍矿为原料,对焙烧剂添加量、焙烧温度和焙烧时间等工艺参数及焙烧机理进行研究。结果表明:焙烧温度 300 ℃、
焙烧时间 90 min 的条件下,Ni、Co、Mn、Mg、Fe 的提取率分别为 95%、96%、92%、57%、79%,硫酸氢铵具
有良好的硫酸化能力。该工艺具有效率高、能耗低、环境友好等特点,对低品位红土镍矿的开发利用具有重要
意义。
关键词:红土镍矿;硫酸氢铵;硫酸化焙烧;循环机理
中图分类号:TF815 文献标志码:A
Recovery of nickel and cobalt from nickel laterite ore by
sulfation roasting method using ammonium bisulfate
SHI Jianfeng, WANG Zhixing, HU Qiyang, GUO Huajun, LI Xinhai, PENG Wenjie
(School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China)
Abstract: The circular technology of sulfation roasting nickel laterite ore using ammonium bisulfate was supposed to
e the defect of traditional process, such as high power consumption and equipment corrosion. Using Philippines
nickel laterite ore as raw material, the roasting mechanism and various parameters including ammonium bisulfate
addition, roasting temperature and roasting time were investigated. The results show that, under conditions of 300 ℃ and
90 min, the extraction rate of Ni, Co, Mn, Mg and Fe are about 95%, 96%, 92%, 57% and 79%, the sulfating ability
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