Decomposition of chromite ore by oxygen in molten NaOH-NaNO3
文献类型：期刊论文
| 作者 | Zhang, Yang1,2; Zheng, Shi-li1; Xu, Hong-bin1; Du, Hao1; Zhang, Yi1 |
| 刊名 | INTERNATIONAL JOURNAL OF MINERAL PROCESSING
 |
| 出版日期 | 2010-07-01 |
| 卷号 | 95期号:1-4页码:10-17 |
| 关键词 | Chromite Sodium hydroxide Sodium nitrate Sodium nitrite Oxidation |
| ISSN号 | 0301-7516 |
| 通讯作者 | Zheng, SL |
| 英文摘要 | An optimized process production of chromate by oxygen was proposed. The tests are executed by introducing NaNO3 to the decomposition process of chromite ore in molten NaOH to decrease the decomposition temperature. An interesting result is that the reaction temperature could decrease from above 500 degrees C to about 400 degrees C, and sodium nitrate has no consumption in the oxidation process, while the Cr yield is above 99%. Mechanism analysis shows that chromite ore is firstly oxidized by NaNO3, where NaNO2 is generated as a reduction product, and then is oxidized to NaNO3. NaNO3 plays the role of oxygen carrier, which can reduce the mass transfer resistance of oxygen. The kinetic study shows that the decomposition process was an internal diffusion controlled, with an apparent activation energy of 106 kJ/mol. Effects of liquid-to-ore ratio, chromite ore particle size, and reaction temperature on the decomposition of chromite ore were also studied. (C) 2010 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] | MANUFACTURING PROCESS ; POTASSIUM HYDROXIDE ; SODIUM CHROMATE ; SALTS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000279623500002 |
| 公开日期 | 2013-11-15 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/6124]  |
| 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.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Yang,Zheng, Shi-li,Xu, Hong-bin,et al. Decomposition of chromite ore by oxygen in molten NaOH-NaNO3[J]. INTERNATIONAL JOURNAL OF MINERAL PROCESSING,2010,95(1-4):10-17. |
| APA | Zhang, Yang,Zheng, Shi-li,Xu, Hong-bin,Du, Hao,&Zhang, Yi.(2010).Decomposition of chromite ore by oxygen in molten NaOH-NaNO3.INTERNATIONAL JOURNAL OF MINERAL PROCESSING,95(1-4),10-17. |
| MLA | Zhang, Yang,et al."Decomposition of chromite ore by oxygen in molten NaOH-NaNO3".INTERNATIONAL JOURNAL OF MINERAL PROCESSING 95.1-4(2010):10-17. |
入库方式： OAI收割
来源：过程工程研究所
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