Solubility and Modeling of Sodium Aluminosilicate in NaOH-NaAI(OH)(4) Solutions and Its Application to Desilication
文献类型：期刊论文
| 作者 | Zeng, Lanmu; Li, Zhibao |
| 刊名 | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
 |
| 出版日期 | 2012-11-21 |
| 卷号 | 51期号:46页码:15193-15206 |
| 关键词 | spent bayer liquor alkaline-solutions diasporic-bauxite zeolite-a sodalite cancrinite speciation kinetics ions |
| ISSN号 | 0888-5885 |
| 其他题名 | Ind. Eng. Chem. Res. |
| 中文摘要 | The solubility of :sodium aluminosilicate (sodalite), a major desilication product (DSP) in the Bayer process, in NaOH and NaOH-NaAl(OH)(4) solutions was determined and modeled from 3.03.2 to 34 4 K Sodium aluminosilicate was synthesized in a batch crystallizer and the effect of temperature, solution concentrations, and aging time Was investigated. Solubility was found to increase with increasing NaOH concentration while the solubility sharply decreases with the addition of Al(OH)(3), reaches a minimum at about 0.8 mol.L-1, and then increases A mixed-solvent electrolyte (MSE) model for the solubility of sodalite was developed with the help of the OLI platform via regression to obtain the model parameters. In addition, the desilication kinetics of NaOH-NaAl(OH)(4) solutions by using sodalite as seeds was studied experimentally and modeled with the aid of a second order kinetic model. The activation energy of desilication over the temperature range 323.2-363.2 K was found to be 92 +/- 14 kJ.mol(-1). Under the optimal operation conditions, 80% silica was removed after 2 h. |
| 英文摘要 | The solubility of :sodium aluminosilicate (sodalite), a major desilication product (DSP) in the Bayer process, in NaOH and NaOH-NaAl(OH)(4) solutions was determined and modeled from 3.03.2 to 34 4 K Sodium aluminosilicate was synthesized in a batch crystallizer and the effect of temperature, solution concentrations, and aging time Was investigated. Solubility was found to increase with increasing NaOH concentration while the solubility sharply decreases with the addition of Al(OH)(3), reaches a minimum at about 0.8 mol.L-1, and then increases A mixed-solvent electrolyte (MSE) model for the solubility of sodalite was developed with the help of the OLI platform via regression to obtain the model parameters. In addition, the desilication kinetics of NaOH-NaAl(OH)(4) solutions by using sodalite as seeds was studied experimentally and modeled with the aid of a second order kinetic model. The activation energy of desilication over the temperature range 323.2-363.2 K was found to be 92 +/- 14 kJ.mol(-1). Under the optimal operation conditions, 80% silica was removed after 2 h. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Chemical |
| 研究领域[WOS] | Engineering |
| 关键词[WOS] | SPENT BAYER LIQUOR ; ALKALINE-SOLUTIONS ; DIASPORIC-BAUXITE ; ZEOLITE-A ; SODALITE ; CANCRINITE ; SPECIATION ; KINETICS ; IONS |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000311325200028 |
| 公开日期 | 2013-11-28 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/6485]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | Chinese Acad Sci, Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Inst Proc Engn, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zeng, Lanmu,Li, Zhibao. Solubility and Modeling of Sodium Aluminosilicate in NaOH-NaAI(OH)(4) Solutions and Its Application to Desilication[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2012,51(46):15193-15206. |
| APA | Zeng, Lanmu,&Li, Zhibao.(2012).Solubility and Modeling of Sodium Aluminosilicate in NaOH-NaAI(OH)(4) Solutions and Its Application to Desilication.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,51(46),15193-15206. |
| MLA | Zeng, Lanmu,et al."Solubility and Modeling of Sodium Aluminosilicate in NaOH-NaAI(OH)(4) Solutions and Its Application to Desilication".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 51.46(2012):15193-15206. |
入库方式： OAI收割
来源：过程工程研究所
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