Desilication of concentrated alkali solution by novel desilication reagent calcium hydroferrocarbonate: Part II. Desilication reaction and kinetics
文献类型：期刊论文
| 作者 | Hong, Tao1; Luo, Jun1; Liu, Manbo1; Zheng, Shili2; Zhang, Yi2 |
| 刊名 | HYDROMETALLURGY
 |
| 出版日期 | 2019-03-01 |
| 卷号 | 184页码:123-131 |
| 关键词 | Concentrated caustic aluminate solution Desilication CHFC Reaction kinetics Desilication mechanism |
| ISSN号 | 0304-386X |
| DOI | 10.1016/j.hydromet.2018.12.010 |
| 英文摘要 | Using a hydroferite desilication reagent, calcium hydroferrocarbonate (CHFC), the desilication reaction in concentrated caustic aluminate solution was studied. The results indicated that process parameters, such as temperature, Na2O concentration, molar ratio of Na2O to Al2O3, and initial mass ratio of alumina to silica (mass ratio of alumina to silica), significantly affected the reaction efficiency. The reaction kinetics were found to exhibit a reaction order of 1.3 +/- 0.15 for desilication; the empirical rate constant k was 64.4 +/- 2.4 and the apparent activation energy Ea was 25.8 +/- 3.2 kJ/Mol, which was much lower than the values obtained by adding Ca(OH)(2), C(3)AH(6)(calcium Hydroaluminate, 3CaO.Al2O3.CaCl2.6H(2)O), and Friedel's salt (3CaO.Al2O3.CaCl2.10H(2)O). In the desilication process, silica reacts with CHFC on the surface to form hydroandradite and calcium aluminum iron hydroxide. Subsequently, with an increase in Na2O concentration and temperature, hydroandradite and calcium aluminum iron hydroxide dehydrated to form calcium aluminum iron silicate and Fe(OH)(3) |
| WOS关键词 | SEEDED PRECIPITATION ; ALUMINATE ; TEMPERATURE ; DISSOLUTION ; ATTENUATION ; PARTICLES ; CHEMISTRY ; SODALITE ; VANADIUM ; LIME |
| 资助项目 | National Natural Science Foundation of China[51304182] ; CSC Scholarship[201707835003] |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000461408200015 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | National Natural Science Foundation of China ; CSC Scholarship |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/28319]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Hong, Tao; Zheng, Shili |
| 作者单位 | 1.Xian Univ Architecture & Technol, Shaanxi Engn Res Ctr Met Technol, Sch Met Engn, Xian 710055, Shaanxi, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hong, Tao,Luo, Jun,Liu, Manbo,et al. Desilication of concentrated alkali solution by novel desilication reagent calcium hydroferrocarbonate: Part II. Desilication reaction and kinetics[J]. HYDROMETALLURGY,2019,184:123-131. |
| APA | Hong, Tao,Luo, Jun,Liu, Manbo,Zheng, Shili,&Zhang, Yi.(2019).Desilication of concentrated alkali solution by novel desilication reagent calcium hydroferrocarbonate: Part II. Desilication reaction and kinetics.HYDROMETALLURGY,184,123-131. |
| MLA | Hong, Tao,et al."Desilication of concentrated alkali solution by novel desilication reagent calcium hydroferrocarbonate: Part II. Desilication reaction and kinetics".HYDROMETALLURGY 184(2019):123-131. |
入库方式： OAI收割
来源：过程工程研究所
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