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Solubility of AlCl3 center dot 6H(2)O in the Fe(II) plus Mg plus Ca plus K + Cl + H2O System and Its Salting-Out Crystallization with FeCl2
Gao, Wencheng; Li, Zhibao
2013-10-02
Source PublicationINDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Volume52Issue:39Pages:14282-14290
AbstractPhase equilibria determination for the Al + Fe(II) + Mg + Ca + K + Cl + H2O system showed that FeCl2 is effective to promote the salting-out crystallization of AlCl3 center dot 6H(2)O. A novel process to recover AlCl3-6H(2)O from fly ash by salting-out crystallization with FeCl2 is proposed and proven feasible. This novel process includes leaching of fly ash by hydrochloric acid, reduction of Fe3+ to Fe2+, salting-out crystallization of AlCl3 center dot 6H(2)O with FeCl2, and filtering followed by washing. The solubility of AlCl3 center dot 6H(2)O in the Fe(II) + Mg + Ca + K + Cl + H2O system was determined over the entire practical concentration range and from 283.2 to 363.2 K using a dynamic method. The experimental solubilities were regressed to obtain new mixed solvent electrolyte (MSE) model parameters. These new parameters were capable of accurately representing the experimental data of the system from 283.2 to 343.2 K. The phase diagram of the ternary AlCl3-FeCl2-H2O system at 298.2 and 333.2 K was successfully constructed with the aid of the new MSE model parameters Based on the phase diagram, a promising route to recover AlCl3 center dot 6H(2)O by salting-out crystallization with FeCl2 was generated and verified to be feasible in laboratory experiments. All the results generated from this study will provide fundamental data for industrial applications aiming at the recovery of alumina from fly ash resources.
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
Indexed BySCI ; ISTP
Language英语
WOS KeywordHYDROCHLORIC-ACID PROCESS ; SOLVENT ELECTROLYTE SYSTEMS ; PARTIAL MOLAL PROPERTIES ; COAL FLY-ASH ; HIGH-PRESSURES ; TRANSPORT-PROPERTIES ; PHASE-BEHAVIOR ; ALUMINA ; CHINA ; CLAY
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000326300400045
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/13526
Collection研究所(批量导入)
AffiliationChinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Gao, Wencheng,Li, Zhibao. Solubility of AlCl3 center dot 6H(2)O in the Fe(II) plus Mg plus Ca plus K + Cl + H2O System and Its Salting-Out Crystallization with FeCl2[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2013,52(39):14282-14290.
APA Gao, Wencheng,&Li, Zhibao.(2013).Solubility of AlCl3 center dot 6H(2)O in the Fe(II) plus Mg plus Ca plus K + Cl + H2O System and Its Salting-Out Crystallization with FeCl2.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,52(39),14282-14290.
MLA Gao, Wencheng,et al."Solubility of AlCl3 center dot 6H(2)O in the Fe(II) plus Mg plus Ca plus K + Cl + H2O System and Its Salting-Out Crystallization with FeCl2".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 52.39(2013):14282-14290.
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