Activation pretreatment of limonitic laterite ores by alkali-roasting method using sodium carbonate
文献类型：期刊论文
| 作者 | Guo, Qiang1,2,3; Qu, Jingkui1,2; Qi, Tao1,2; Wei, Guangye1,2,4; Han, Bingbing1,2 |
| 刊名 | MINERALS ENGINEERING
 |
| 出版日期 | 2011-07-01 |
| 卷号 | 24期号:8页码:825-832 |
| 关键词 | Sodium carbonate roasting Activation pretreatment Cr-containing limonitic laterite ores Pressure acid leaching Nickel Cobalt |
| ISSN号 | 0892-6875 |
| 通讯作者 | Qi, T |
| 英文摘要 | Activation pretreatment of Cr-containing limonitic laterite ores by Na(2)CO(3) roasting to remove Cr and Al, as well as its effect on Ni and Co extraction in the subsequent pressure acid leaching process were investigated. X-ray diffraction (XRD), thermogravimetric (TG), and scanning electron microscopy/X-ray energy dispersive spectroscopy (SEM/XEDS) techniques were used to characterize the laterite ores and the water leaching residues of alkali roasting and found that goethite is the major Ni-bearing mineral and chromite the minor one. Alkali-roasting pretreatment breaks the mineral lattices of the laterite, exposing their Ni and Co, which leads to higher extraction of these two metals under milder operation conditions in the subsequent pressure acid leaching process. Experimental results showed that the leaching of Cr and Al were up to 99 wt% and 80 wt%, respectively, under optimal alkali roasting and water leaching conditions. Compared with the direct pressure acid leaching of the raw laterite ores, leaching of Ni and Co increased from 79.96 wt% to 97.52 wt% and 70.02 wt% to 95.33 wt%, respectively, after alkali-roasting activation pretreatment was performed. Meanwhile, the grade of acid leaching iron residues increased from 55.31 wt% to 62.92 wt%, and these residues with low Cr content could be more suitable as the raw materials for iron-making. (C) 2011 Elsevier Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology ; Physical Sciences |
| 类目[WOS] | Engineering, Chemical ; Mineralogy ; Mining & Mineral Processing |
| 研究领域[WOS] | Engineering ; Mineralogy ; Mining & Mineral Processing |
| 关键词[WOS] | SULFURIC-ACID ; NICKELIFEROUS LATERITES ; NICKEL LATERITES ; OXIDE ORES ; PART I ; PRESSURE ; KINETICS ; RESIDUE ; BEHAVIOR |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000292580800015 |
| 公开日期 | 2013-11-01 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/4702]  |
| 专题 | 过程工程研究所_湿法冶金清洁生产技术国家工程实验室 |
| 作者单位 | 1.Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Key Lab Green Proc & Engn, Inst Proc Engn, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing 100190, Peoples R China 4.Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Qiang,Qu, Jingkui,Qi, Tao,et al. Activation pretreatment of limonitic laterite ores by alkali-roasting method using sodium carbonate[J]. MINERALS ENGINEERING,2011,24(8):825-832. |
| APA | Guo, Qiang,Qu, Jingkui,Qi, Tao,Wei, Guangye,&Han, Bingbing.(2011).Activation pretreatment of limonitic laterite ores by alkali-roasting method using sodium carbonate.MINERALS ENGINEERING,24(8),825-832. |
| MLA | Guo, Qiang,et al."Activation pretreatment of limonitic laterite ores by alkali-roasting method using sodium carbonate".MINERALS ENGINEERING 24.8(2011):825-832. |
入库方式： OAI收割
来源：过程工程研究所
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