Inorganic Chemicals Industry >
Preparation of high?performance building gypsum by desulfurization gypsum doped with ZnO crystal transformation
Received date: 2021-10-20
Online published: 2022-06-22
The mass preparation of building gypsum from desulfurization gypsum after heat treatment not only alleviates environmental pollution problems，but also has certain economic benefits.High?performance building gypsum was prepared by using desulfurization gypsum from power plant as raw material and adding ZnO as crystal transformation adjuvant to adjust the crystal structure of calcined products of desulfurization gypsum through heat treatment.And the effects of ZnO content and calcination temperature on the properties of building gypsum were studied.The results showed that the addition of ZnO broadened the temperature range for calcining desulfurization gypsum into hemihydrate gypsum，and also improved the crystallinity of calcined products.By adding 0.6% ZnO（calculated by mass fraction） to desulfurization gypsum，the performance of building gypsum calcined at 180 ℃ was the best.The morphology of products with hydration of 2 h was needle?like or fibrous crystals that were stacked with each other.The flexural and compressive strengths reached 3.8 MPa and 9.2 MPa at 2 h，respectively，meeting the standard requirements of grade 3.0 of building gypsum.It could realize the large?scale resource utilization of desulfurization gypsum to prepare high?performance building gypsum.
Jianying HAO , Tao HU , Guanji CHENG , Bing GUO . Preparation of high?performance building gypsum by desulfurization gypsum doped with ZnO crystal transformation[J]. Inorganic Chemicals Industry, 2022 , 54(6) : 96 -101 . DOI: 10.19964/j.issn.1006-4990.2021-0595
| 1 | HE Qingxin， LEE J M.Additional market incentives for abatement：An analysis of flue?gas desulfurization by?products［J］.Resource and Energy Economics，2014，36（2）：370-393. |
| 2 | LIU Sen， LIU Wei， JIAO Fen，et al.Production and resource utilization of flue gas desulfurized gypsum in China-A review［J］.Environmental Pollution，2021，288.Doi：10.1016/j.envpol.2021.117799 . |
| 3 | 李逸晨.石膏行业的发展现状及趋势［J］.硫酸工业，2019（11）：1-7，13. |
| 3 | LI Yichen.Development status and trend of gypsum industry［J］.Sulphuric Acid Industry，2019（11）：1-7，13. |
| 4 | 尤彩霞，李军，孙娜，等.电厂脱硫石膏制水泥缓凝剂二水石膏的研究［J］.无机盐工业，2019，51（12）：71-74. |
| 4 | YOU Caixia， LI Jun， SUN Na，et al.Study on preparation of dehydrate |
| 4 | gypsum from desulfurization gypsum of thermal power plant［J］.Inorganic Chemicals Industry，2019，51（12）：71-74. |
| 5 | 李亮.利用脱硫石膏制备发泡轻质材料的研究［J］.无机盐工业，2018，50（11）：49-52. |
| 5 | LI Liang.Study on preparation of lightweight foaming material by desulfurized gypsum［J］.Inorganic Chemicals Industry，2018，50（11）：49-52. |
| 6 | 刘同卫.脱硫石膏基轻质节能保温材料的制备与性能［D］.济南：济南大学，2020. |
| 6 | LIU Tongwei.Preparation and properties of FGD gypsum?based |
| 6 | lightweight energy saving thermal insulation materials［D］.Jinan：University of Jinan，2020. |
| 7 | 杨磊.改性烟气脱硫建筑石膏复合墙材的研制及性能研究［D］.济南：山东建筑大学，2017. |
| 7 | YANG Lei.Study on preparation and properties of modified flue gas desulfurization building gypsum composite walling materials［D］.Jinan：Shandong Jianzhu University，2017. |
| 8 | 王小亮.利用脱硫石膏制备新型石膏砌块的研究［D］.西安：西安科技大学，2016. |
| 8 | WANG Xiaoliang.Study on preparation of new type gypsum block with desulphurization gypsum［D］.Xi'an：Xi'an University of Science and Technology，2016. |
| 9 | 陈虹，姜同轩，马蕊，等.脱硫石膏施用不同年限对土壤改良效果及安全性评价［J］.江苏农业科学，2021，49（6）：208-212. |
| 9 | CHEN Hong， JIANG Tongxuan， MA Rui，et al.Evaluation of soil improvement effect and safety of desulfurized gypsum for different years［J］.Jiangsu Agricultural Sciences，2021，49（6）：208-212. |
| 10 | 边成利，时焕岗，包文运，等.脱硫石膏热处理制备注浆成型模具［J］.无机盐工业，2020，52（2）：54-57. |
| 10 | BIAN Chengli， SHI Huangang， BAO Wenyun，et al.Heat treatment of FGD gypsum and preparation of molds for slip casting［J］.Inorganic Chemicals Industry，2020，52（2）：54-57. |
| 11 | 郭会师，王庆佩，张果，等.普通硅酸盐水泥改性脱硫建筑石膏耐水性能［J］.硅酸盐通报，2021，40（7）：2288-2295. |
| 11 | GUO Huishi， WANG Qingpei， ZHANG Guo，et al.Water resistance of flue gas desulfurization building gypsum modified by ordinary Portland cement［J］.Bulletin of the Chinese Ceramic Society，2021，40（7）：2288-2295. |
| 12 | 王飞，汪澜，刘姚君，等.煅烧制度对脱硫石膏物理性能的影响研究［J］.科学技术与工程，2014，14（16）：170-174. |
| 12 | WANG Fei， WANG Lan， LIU Yaojun，et al.Study on the effects of calcined system on physical performance of desulphurization gypsum［J］.Science Technology and Engineering，2014，14（16）：170-174. |
| 13 | 司政凯，陈晓飞，苏向东，等.脱硫石膏处理工艺对建筑石膏性能的影响规律［J］.新型建筑材料，2015，42（3）：8-11. |
| 13 | SI Zhengkai， CHEN Xiaofei， SU Xiangdong，et al.The effect law of treatment process of FGD on properties of building gypsum powder［J］.New Building Materials，2015，42（3）：8-11. |
| 14 | 刘志刚，霍超，杨立荣，等.利用亚硫酸钙型脱硫石膏制备胶凝材料的研究［J］.非金属矿，2015，38（1）：35-37，41. |
| 14 | LIU Zhigang， HUO Chao， YANG Lirong，et al.Preparation of gypsum-based cementing material using calcium sulfite desulfurization gypsum［J］.Non-Metallic Mines，2015，38（1）：35-37，41. |
| 15 | 张康.改性剂-煅烧联合改性湿氟石膏制备建筑石膏粉的研究［D］.长沙：中南大学，2013. |
| 15 | ZHANG Kang.Water-saturated fluorgypsum modification with modifiers for building gypsum powder under calcination［D］.Changsha：Central South University，2013. |
| 16 | HAO Jianying， CHENG Guanji， HU Tao，et al.Preparation of high?performance building gypsum by calcining FGD gypsum adding CaO as crystal modifier［J］.Construction and Building Materials，2021，306.Doi：10.1016/j.conbuildmat.2021.124910 . |
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