| 褐铁型红土矿碱浸渣的常压酸浸工艺条件优化 |
| |
| 引用本文： | 王宝全,郭强,曲景奎,齐涛.褐铁型红土矿碱浸渣的常压酸浸工艺条件优化[J].过程工程学报,2012,12(3):420-426. |
| |
| 作者姓名： | 王宝全 郭强 曲景奎 齐涛 |
| |
| 作者单位： | 1. 中国科学院过程工程研究所绿色过程与工程院重点实验室,湿法冶金清洁生产技术国家工程实验室,北京100190;中国科学院研究生院,北京100049
2. 中国科学院过程工程研究所绿色过程与工程院重点实验室,湿法冶金清洁生产技术国家工程实验室,北京100190 |
| |
| 基金项目： | 国家科技支撑计划基金资助项目，国家杰出青年科学基金资助项目 |
| |
| 摘 要： | 采用Na2CO3焙烧-水洗方法处理褐铁型红土镍矿，并对预处理后的原料(碱浸渣)进行常压酸浸工艺研究. 通过热力学计算判断酸浸过程中可能发生的反应及趋势大小，考察各元素在硫酸和盐酸常压浸出中的行为，并结合浸出渣的XRD图谱，分析浸出过程中的反应，综合考虑浸出液及废渣处理等因素，选定盐酸为常压浸出剂. 实验研究了酸渣比、液固比、浸出温度和时间对各元素浸出规律的影响，确定优化酸浸条件为：酸渣质量比1.25，液固质量比4，浸出温度80℃，保温时间3 h，此时Ni, Co和Fe的浸出率分别达99.2%, 99.5%, 97.8%(w).
|
| 关 键 词： | 褐铁型红土镍矿 常压酸浸 盐酸 硫酸 镍 钴 铁 |
| 收稿时间： | 2012-3-23 |
| 修稿时间： | 2012-5-16 |
Optinization of Conditions in Atmospheric Acid Leaching of the Water-leached Residue of Limonitic Laterite after Alkali-roasting |
| |
| WANG Bao-quan
,
GUO Qiang
,
QU Jing-kui
,
QI Tao.Optinization of Conditions in Atmospheric Acid Leaching of the Water-leached Residue of Limonitic Laterite after Alkali-roasting[J].Chinese Journal of Process Engineering,2012,12(3):420-426. |
| |
| Authors: | WANG Bao-quan GUO Qiang QU Jing-kui QI Tao |
| |
| Affiliation: | 1(1.Key Laboratory of Green Process and Engineering,Institute of Process Engineering,National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology,CAS,Beijing 100190,China;2.Graduate University of Chinese Academy of Sciences,Beijing 100049,China) |
| |
| Abstract: | Water-leached residue of limonitic laterite was obtained after Na2CO3-roasting,and its atmospheric leaching behavior was investigated.Thermodynamic calculation was performed to evaluate possible reactions in the leaching process.Hydrochloric acid was chosen as the leaching agent after comparing atmospheric leaching behaviors of elements of the residue in sulfuric and hydrochloric acid,as well as consideration of the treatment options of the leaching liquid and residue.Atmospheric acid leaching experiments were carried out to investigate the effects of mass ratio of acid to residue,mass ratio of liquid to solid,leaching temperature and time on the leaching of water-leached residue of laterite after alkali-roasting.99.2%(ω) Ni,99.5%(ω) Co and 97.8%(ω) Fe were leached out at the optimum leaching conditions of mass ratio of acid to residue 1.25,mass ratio of liquid to solid 4,80℃ and 3 h. |
| |
| Keywords: | limonitic laterite atmospheric acid leaching hydrochloric acid sulfuric acid nickel cobalt iron |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《过程工程学报》浏览原始摘要信息 |
|
点击此处可从《过程工程学报》下载全文 |
|
