转晶剂对不同工业石膏制备α-半水石膏的影响
收稿日期: 2023-05-24
网络出版日期: 2024-04-18
基金资助
国家重点研发计划项目(2022YFC3203500)
Effect of crystal modifier on preparation of α-hemihydrates gypsum from industrial gypsum
Received date: 2023-05-24
Online published: 2024-04-18
磷石膏和脱硫石膏是堆存量最大的工业固废石膏,将其转化为半水石膏作为建筑胶凝材料是最主要的资源化利用途径。采用蒸压法制备α-半水石膏,以磷石膏和脱硫石膏为原料,天然石膏作为对照组,探究了十二烷基苯磺酸钠(SDBS)、硫酸铝[Al2(SO4)3]、复合转晶剂CM(硫酸铝、柠檬酸钠)对α-半水石膏晶体形貌的调控作用及其强度的影响。结果表明,于135 ℃下蒸压5 h,3种石膏均能稳定制备α-半水石膏,3种转晶剂对于半水石膏物相组成无影响,同时0.4%(质量分数)CM能够有效降低晶体的长径比;通过t检验法检测,转晶剂对脱硫石膏、天然石膏制备的α-半水石膏的抗压强度有显著性增强作用,α-半水石膏的抗压强度增加2倍以上,分别为13.59 MPa和17.45 MPa。而转晶剂对以磷石膏为原料制备的α-半水石膏的强度没有明显作用。脱硫石膏和天然石膏在0.4%CM的调控下晶体长径比降低,抗压、抗折强度显著提升,而磷石膏由于其杂质影响,转晶剂的作用效果不明显,研究结果可为工业石膏的工业化生产提供一定的理论指导。
王培雄 , 龚小梅 , 丁家琪 , 曹宏 . 转晶剂对不同工业石膏制备α-半水石膏的影响[J]. 无机盐工业, 2024 , 56(4) : 112 -117 . DOI: 10.19964/j.issn.1006-4990.2023-0283
Phosphogypsum and desulfurization gypsum are industrial solid wastes with the largest storage capacity,and transforming them into hemihydrate gypsum as building materials is the best way for resource recycle.The α-hemihydrates gypsum was obtained by autoclave method from different industrial gypsum including desulfurized gypsum(FGD),phosphogypsum(PG) and natural gypsum(NG) as a control group.The effects of crystal modifiers including sodium dodecyl benzene sulfonate(SDBS),aluminum sulfate[Al2(SO4)3]and compound crystal modifier(CM) on the morphology and strength of α-hemihydrates gypsum were investigated.The results showed that under autoclaved pressure at 135 ℃ for 5 h,α-hemihydrate gypsum could be prepared by three types of gypsum stably,three types of crystal modifiers had no impact on the phase composition of hemihydrate gypsum.0.4%CM could reduce the aspect ratio of crystals effectively.Based on T-test,the crystal modifiers had significant enhancing effect on the compression strength of α-hemihydrate gypsum prepared from FGD and NG,which was increased by more than 2 times to 13.59 MPa and 17.45 MPa,respectively.However,the strength of α-hemihydrates gypsum prepared by PG had no obvious change by adding crystal modifiers.The results exhibited that 0.4%CM could reduce the aspect ratio of crystals and improved compressive and flexural strength significantly of α-hemihydrates gypsum prepared from FGD and NG.The crystal modifier had no obvious impact on α-hemihydrates gypsum prepared from PG due to impurities.The results of the study provided a certain degree of theoretical guidance for the industrial production of different gypsum.
| 1 | 刘林程, 左海滨, 许志强. 工业石膏的资源化利用途径与展望[J]. 无机盐工业, 2021, 53(10):1-9. |
| LIU Lincheng, ZUO Haibin, XU Zhiqiang. Resource utilization approach of industrial gypsum and its prospect[J]. Inorganic Chemicals Industry, 2021, 53(10):1-9. | |
| 2 | 党红明. 磷化工生产与烟气脱硫协同利用工业副产石膏[J]. 化工环保, 2022, 42(6):728-731. |
| DANG Hongming. Utilization of industrial by-product gypsum by combining phosphorus chemical production and flue gas desulfurization[J]. Environmental Protection of Chemical Industry, 2022, 42(6):728-731. | |
| 3 | 崔荣政. 2021年我国磷石膏综合利用现状及建议[J]. 磷肥与复肥, 2022, 37(11):1-3. |
| CUI Rongzheng. Status of comprehensive utilization of phosphogypsum in China in 2021 and suggestions[J]. Phosphate & Compound Fertilizer, 2022, 37(11):1-3. | |
| 4 | 周登峰, 单双明, 杨瑞东, 等. 磷石膏高温高压实验及其改性[J]. 高压物理学报, 2021, 35(3):18-24. |
| ZHOU Dengfeng, SHAN Shuangming, YANG Ruidong, et al. High temperature and high pressure experiment and modification of phosphogypsum[J]. Chinese Journal of High Pressure Physics, 2021, 35(3):18-24. | |
| 5 | 纪罗军, 赵红林. 从循环经济角度看工业副产石膏的资源化利用[J]. 硫酸工业, 2021(9):1-8. |
| JI Luojun, ZHAO Honglin. Resource utilization of industrial by-product gypsum from the perspective of circular economy[J]. Sulphuric Acid Industry, 2021(9):1-8. | |
| 6 | GUAN Qingjun, SUI Ying, ZHANG Fang, et al. Preparation of α-calcium sulfate hemihydrate from industrial by-product gypsum:A review[J]. Physicochemical Problems of Mineral Processing, 2020, 57(1):168-181. |
| 7 | LI Xianbo, ZHANG Qin, SHEN Zhihui, et al. L-aspartic acid:A crystal modifier for preparation of hemihydrate from phosphogypsum in CaCl2 solution[J]. Journal of Crystal Growth, 2019, 511:48-55. |
| 8 | GHOLAMI M, KHAKPOUR Z. Manufacturing of new potential plaster molds for slip casting of alumina nanoparticles[J]. Journal of the Australian Ceramic Society, 2019, 55(3):633-637. |
| 9 | RONG Kuanwei, LAN Wentao, LI Hongyan. Industrial experiment of goaf filling using the filling materials based on hemihydrate phosphogypsum[J]. Minerals, 2020, 10(4):324. |
| 10 | 李德星, 郭荣鑫, 林志伟, 等. 磷石膏制备α-半水石膏的研究现状[J]. 硅酸盐通报, 2022, 41(3):860-869. |
| LI Dexing, GUO Rongxin, LIN Zhiwei, et al. Research status of preparation of α-hemihydrate gypsum from phosphogypsum[J]. Bulletin of the Chinese Ceramic Society, 2022, 41(3):860-869. | |
| 11 | MA Baoguo, LU Wenda, SU Ying, et al. Synthesis of α-hemihydrate gypsum from cleaner phosphogypsum[J]. Journal of Cleaner Production, 2018, 195:396-405. |
| 12 | WANG Xiao, JIN Biao, XU Zhuoyue, et al. Effects of AlCl3 on the crystal morphology of calcium sulfate whisker prepared from FGD gypsum[J]. IOP Conference Series:Materials Science and Engineering, 2019, 472: 012005. |
| 13 | WANG Jing, FAN Saiying, HOU Sichao, et al. Effects of cationic polyacrylamide on hydrothermal formation of ultralong α-CaSO4·0.5H2O whiskers[J]. Crystal Research and Technology, 2019, 54(4):1800224. |
| 14 | MI Yang, CHEN Deyu, WANG Shuzhou. Utilization of phosphogypsum for the preparation of α-calcium sulfate hemihydrate in chloride-free solution under atmospheric pressure[J]. Journal of Chemical Technology & Biotechnology, 2018, 93(8):2371-2379. |
| 15 | LI Haoxin, ZHANG Hui, LI Lin, et al. Utilization of low-quality desulfurized ash from semi-dry flue gas desulfurization by mixing with hemihydrate gypsum[J]. Fuel, 2019, 255:115783. |
| 16 | CAMARINI G, PINTO M C C, DE MOURA A G, et al. Effect of citric acid on properties of recycled gypsum plaster to building components[J]. Construction and Building Materials, 2016, 124:383-390. |
| 17 | JIA Ruiquan, WANG Qiang, LUO Ting. Reuse of phosphogypsum as hemihydrate gypsum:The negative effect and content control of H3PO4 [J]. Resources,Conservation and Recycling, 2021, 174:105830. |
| 18 | 朱庚杰, 朱万成, 齐兆军, 等. 固废基充填胶凝材料配比分步优化及其水化胶结机理[J]. 工程科学学报, 2023, 45(8):1304-1315. |
| ZHU Gengjie, ZHU Wancheng, QI Zhaojun, et al. Step optimization of a solid waste-based binder for backfill and a study on hydration and cementation mechanism[J]. Chinese Journal of Engineering, 2023, 45(8):1304-1315. | |
| 19 | 琚永健, 倪文, 李颖, 等. 精炼渣-转炉渣-矿渣-脱硫石膏胶凝材料组成优化及协同作用机理研究[J]. 河北科技大学学报, 2022, 43(2):211-220. |
| JU Yongjian, NI Wen, LI Ying, et al. Study on composition optimization and synergistic mechanism of cementitious materials of refining slag,converter slag,blast furnace slag and desulfurized gypsum[J]. Journal of Hebei University of Science and Technology, 2022, 43(2):211-220. | |
| 20 | 张太玥, 谢凡, 郭君渊. 磷石膏基复合胶凝材料的性能优化及机理研究[J]. 无机盐工业, 2022, 54(9):136-142. |
| ZHANG Taiyue, XIE Fan, GUO Junyuan. Study on performance optimization and mechanism of phosphogypsum based composite cementitious materials[J]. Inorganic Chemicals Industry, 2022, 54(9):136-142. | |
| 21 | 郝建英, 胡涛, 程冠吉, 等. 脱硫石膏掺杂氧化锌转晶制备高性能建筑石膏[J]. 无机盐工业, 2022, 54(6):96-101. |
| HAO Jianying, HU Tao, CHENG Guanji, et al. Preparation of high-performance building gypsum by desulfurization gypsum doped with ZnO crystal transformation[J]. Inorganic Chemicals Industry, 2022, 54(6):96-101. | |
| 22 | DUAN Zhengyang, LI Jianxi, LI Tianguo, et al. Influence of crystal modifier on the preparation of α-hemihydrate gypsum from phosphogypsum[J]. Construction and Building Materials, 2017, 133:323-329. |
| 23 | 江瀚宁, 李玉平, 王志云, 等. 硫酸铝、草酸钾及其共混物对α-半水石膏制备及性能的影响[J]. 无机盐工业, 2022, 54(10):121-126. |
| JIANG Hanning, LI Yuping, WANG Zhiyun, et al. Effect of potassium oxalate and aluminum sulfate and their compounds on preparation and properties of α-hemihydrate gypsum[J]. Inorganic Chemicals Industry, 2022, 54(10):121-126. | |
| 24 | 陈金文, 易芸, 张慧, 等. 蒸压参数与杂质对磷石膏制备α-半水石膏的影响[J]. 无机盐工业, 2022, 54(3):91-96. |
| CHEN Jinwen, YI Yun, ZHANG Hui, et al. Effect of autoclave parameters and impurities on preparation of α-hemihydrate gypsum from phosphogypsum[J]. Inorganic Chemicals Industry, 2022, 54(3):91-96. |
/
| 〈 |
|
〉 |