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投稿时间：2012-12-24 修订日期：2012-12-25 录用日期：2012-12-26 网络发布日期：2013-06-19
投稿时间：2012-12-24 修订日期：2012-12-25 录用日期：2012-12-26 网络发布日期：2013-06-19
中文摘要: 采用硫酸化氧化焙烧—水浸工艺从高铁低镁的红土镍矿中提取镍、钴，主要研究了硫酸用量、酸化氧化焙烧温度和时间、水浸时间、水浸液固比等因素对镍、钴浸出率的影响。结果表明，最佳工艺条件为：矿石粒度-1 mm，按酸料比0.54在300 ℃焙烧1 h再升至800 ℃焙烧2 h，水浸液固比3∶1，水浸温度70 ℃，水浸时间2 h，此时镍、钴浸出率分别达到91.00%和91.51%，铁浸出率仅为2.72%。
Abstract:Nickel and cobalt were extracted from laterite-nickel ores containing high iron and low magnesium by “sulfating roasting-oxidizing roasting-water leaching” process. The effects of sulfuric acid consumption, time and temperature of sulfating roasting and oxidizing roasting, leaching time, ratio of liquid to solid (L/S) were investigated. The results show that the leaching rate of Ni, Co and Fe are 91.00%, 91.51%, and 2.72%, respectively, under the following optimum conditions including particle size of -1 mm, acid-ore ratio of 0.54, sulfating roasting at 300 ℃ for 1 hour, oxidizing roasting at 800 ℃ for 2 hours, water leaching at 70 ℃ for 2 hours with L/S of 3∶1.
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基金项目:云南省科技攻关项目（2008-52A）
| 作者 | 单位 | |
| 童伟锋 | 昆明贵金属研究所 | tong6756@163.com |
| 范兴祥* | 昆明贵金属研究所 | |
| 吴晓峰 | 昆明贵金属研究所 | |
| 赵家春 | 昆明贵金属研究所 | |
| 李博捷 | 昆明贵金属研究所 | |
| 吴跃东 | 昆明贵金属研究所 |
| Author Name | Affiliation | |
| TONG Wei-feng | Kunming Institute of Precious Metals | tong6756@163.com |
| FAN Xing-xiang | ||
| WU Xiao-feng | ||
| ZHAO Jiachun | ||
| LI Bo-jie | ||
| WU Yue-dong |
引用文本：
童伟锋,范兴祥,吴晓峰,赵家春,李博捷,吴跃东.硫酸化氧化焙烧—水浸法从红土镍矿中提取镍钴[J].有色金属（冶炼部分）,2013(7):9-12.
TONG Wei-feng,FAN Xing-xiang,WU Xiao-feng,ZHAO Jiachun,LI Bo-jie,WU Yue-dong.Extraction of Ni and Co from Laterite-Nickel Ores with Sulfating and Oxidizing Roasting-Water Leaching Process[J].Nonferrous Metals (Extractive Metallurgy),2013(7):9-12.
童伟锋,范兴祥,吴晓峰,赵家春,李博捷,吴跃东.硫酸化氧化焙烧—水浸法从红土镍矿中提取镍钴[J].有色金属（冶炼部分）,2013(7):9-12.
TONG Wei-feng,FAN Xing-xiang,WU Xiao-feng,ZHAO Jiachun,LI Bo-jie,WU Yue-dong.Extraction of Ni and Co from Laterite-Nickel Ores with Sulfating and Oxidizing Roasting-Water Leaching Process[J].Nonferrous Metals (Extractive Metallurgy),2013(7):9-12.
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