Crystallization kinetics of large-sized columnar ?-hemihydrate gypsum by reaction of waste CaCl2 and Al2(SO4)(3) without crystal modifiers
文献类型：期刊论文
| 作者 | Liu, Shuaifeng1,2; Sun, Qian1,3; Asselin, Edouard4; Li, Zhibao1 |
| 刊名 | JOURNAL OF CRYSTAL GROWTH
 |
| 出版日期 | 2022-10-15 |
| 卷号 | 596页码:9 |
| ISSN号 | 0022-0248 |
| 关键词 | Crystallization kinetics Waste CaCl 2 High strength a-gypsum CSTR Aluminum chloride hydrate |
| DOI | 10.1016/j.jcrysgro.2022.126817 |
| 英文摘要 | Direct production of high-strength alpha-calcium sulfate hemihydrate (alpha-HH) with no additives was accomplished by the reaction of aluminum sulfate and waste CaCl2 discarded from Solvay soda plant. For scaling-up this new process, the crystallization kinetics of alpha-HH was experimentally investigated under varying conditions including temperature (323-363 K), concentration of CaCl2 (4-7 mol/kg), Al2(SO4)3 (0.6-3.0 mol/kg), and seed loading. The optimal operating conditions are 7 mol/kg CaCl2 solution, 0.8 mol/kg Al2(SO4)3 solution, 5 wt% seed loading, 2 mol/kg AlCl3 existing in the reactor, T = 353 K, and equilibrium time of 3 h. The alpha-HH with large columnar shape, as desired in industry, was successfully obtained at optimal conditions by use of a continuous stirred tank reactor (CSTR) without the addition of any additives. The stability test of various CaSO4 phases in aqueous AlCl3, CaCl2, and their solution mixtures elucidated that Al3+ ion and total concentration of Cl- ion play an important role in the growth and shape of alpha-HH crystal. |
| WOS关键词 | CALCIUM-SULFATE HEMIHYDRATE ; DECOMPOSITION ; ACID ; HCL |
| 资助项目 | National Natural Science Foundation of China[21978290] |
| WOS研究方向 | Crystallography ; Materials Science ; Physics |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000868435800006 |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/55189]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Li, Zhibao |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China 3.Qingdao Fanen Technol Co Ltd, Jinjing Grp Corp, Qingdao 266042, Shandong, Peoples R China 4.Univ British Columbia, Dept Mat Engn, 309-6350 Stores Rd, Vancouver, BC V6T 1Z4, Canada |
| 推荐引用方式 GB/T 7714 | Liu, Shuaifeng,Sun, Qian,Asselin, Edouard,et al. Crystallization kinetics of large-sized columnar ?-hemihydrate gypsum by reaction of waste CaCl2 and Al2(SO4)(3) without crystal modifiers[J]. JOURNAL OF CRYSTAL GROWTH,2022,596:9. |
| APA | Liu, Shuaifeng,Sun, Qian,Asselin, Edouard,&Li, Zhibao.(2022).Crystallization kinetics of large-sized columnar ?-hemihydrate gypsum by reaction of waste CaCl2 and Al2(SO4)(3) without crystal modifiers.JOURNAL OF CRYSTAL GROWTH,596,9. |
| MLA | Liu, Shuaifeng,et al."Crystallization kinetics of large-sized columnar ?-hemihydrate gypsum by reaction of waste CaCl2 and Al2(SO4)(3) without crystal modifiers".JOURNAL OF CRYSTAL GROWTH 596(2022):9. |
入库方式： OAI收割
来源：过程工程研究所
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