A new metallurgical process for the clean utilization of chromite ore
文献类型：期刊论文
| 作者 | Chen, Gang1,2; Wang, Xiaohui1; Wang, Jiajun3; Du, Hao1; Zhang, Ying1; Zheng, Shi-Li1; Zhang, Yi1 |
| 刊名 | INTERNATIONAL JOURNAL OF MINERAL PROCESSING
 |
| 出版日期 | 2014-09-10 |
| 卷号 | 131期号:SEP页码:58-68 |
| 关键词 | Chromite ore Chromium (VI) pollution Oxidative leaching Kinetics Oxygen transfer |
| ISSN号 | 0301-7516 |
| 其他题名 | Int. J. Miner. Process. |
| 中文摘要 | A new metallurgical process for extracting chromium from chromite ore is proposed to overcome the severe chromium (VI) pollution in chromate production industry. When the 60 wt.% KOH solution was used to decompose chromite ore, the chromium and iron ions in chromite ore were oxidized into soluble K(2)CraO(4) crystal and insoluble KFe3O5 particle, respectively. The chromium levels in the new residue meet the emission standard of chromium-containing waste due to the KFe3O5 crystal's compact appearance, hence the pollution problem of chromite ore process residue is thoroughly resolved. The effect of the main variables on this clean metallurgical process was systematically investigated. Under the condition of leaching temperature 200 degrees C, oxygen partial pressure 2.0 MPa, and particle size 0.045-0.063 mm, the chromium extraction reached up to 99.4% after 5 h reaction. There is no product layer existing during the leaching process, and the reaction rate is controlled by the surface reaction. The resistances of oxygen transport during the leaching process were calculated step by step, and the surface chemical reaction was the main resistance factor that was consistent with the kinetics study. (C) 2014 Elsevier B.V. All rights reserved. |
| 英文摘要 | A new metallurgical process for extracting chromium from chromite ore is proposed to overcome the severe chromium (VI) pollution in chromate production industry. When the 60 wt.% KOH solution was used to decompose chromite ore, the chromium and iron ions in chromite ore were oxidized into soluble K(2)CraO(4) crystal and insoluble KFe3O5 particle, respectively. The chromium levels in the new residue meet the emission standard of chromium-containing waste due to the KFe3O5 crystal's compact appearance, hence the pollution problem of chromite ore process residue is thoroughly resolved. The effect of the main variables on this clean metallurgical process was systematically investigated. Under the condition of leaching temperature 200 degrees C, oxygen partial pressure 2.0 MPa, and particle size 0.045-0.063 mm, the chromium extraction reached up to 99.4% after 5 h reaction. There is no product layer existing during the leaching process, and the reaction rate is controlled by the surface reaction. The resistances of oxygen transport during the leaching process were calculated step by step, and the surface chemical reaction was the main resistance factor that was consistent with the kinetics study. (C) 2014 Elsevier B.V. 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] | ELECTROLYTE-SOLUTIONS ; OXYGEN ; SOLUBILITY ; DIFFUSION ; WATER |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000343376400008 |
| 公开日期 | 2014-12-01 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/11667]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China 2.Grad Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.China Univ Min & Technol Beijing, Sch Chem & Environm Engn, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Gang,Wang, Xiaohui,Wang, Jiajun,et al. A new metallurgical process for the clean utilization of chromite ore[J]. INTERNATIONAL JOURNAL OF MINERAL PROCESSING,2014,131(SEP):58-68. |
| APA | Chen, Gang.,Wang, Xiaohui.,Wang, Jiajun.,Du, Hao.,Zhang, Ying.,...&Zhang, Yi.(2014).A new metallurgical process for the clean utilization of chromite ore.INTERNATIONAL JOURNAL OF MINERAL PROCESSING,131(SEP),58-68. |
| MLA | Chen, Gang,et al."A new metallurgical process for the clean utilization of chromite ore".INTERNATIONAL JOURNAL OF MINERAL PROCESSING 131.SEP(2014):58-68. |
入库方式： OAI收割
来源：过程工程研究所
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