Inorganic Chemicals Industry >
Preparation of β-hemihydrate gypsum by phosphogypsum roasting
Received date: 2023-01-15
Online published: 2023-10-16
In view of the difficulties in controlling temperature，time and other key thermal limits in the process of roasting phosphogypsum to prepare β-hemihydrous gypsum and high energy consumption，static roasting and multistage dynamic roasting were compared to explore the best thermal constants and technical indexes of phosphogypsum and phosphogypsum roasting after purification by flotation to prepare β-hemihydrous gypsum.The results showed that the content and mechanical properties of β-hemihydrate gypsum products prepared by multistage dynamic roasting purified phosphogypsum were better than original phosphogypsum.After the purified phosphogypsum was roasted at 180 ℃ for 60 min，β-hemihydrate gypsum content of 87.45% was gained.The initial and final setting time remained 3 min and 9 min，respectively，and the 2 h flexural and compressive strength reached 3.5 MPa and 7.8 MPa，respectively，which met the requirements of national standard Grade 3 products and could be used in the construction gypsum industry.
Key words： phosphogypsum; flotation; roasting; β-hemihydrate gypsum
GUO Ze , ZHANG Pengfei , YANG Fan , ZHANG Hanquan , LU Manman . Preparation of β-hemihydrate gypsum by phosphogypsum roasting[J]. Inorganic Chemicals Industry, 2023 , 55(10) : 106 -113 . DOI: 10.19964/j.issn.1006-4990.2023-0034
| 1 | 董泽，翟延波，任志威，等.磷石膏建材资源化利用研究进展［J］.无机盐工业，2022，54（4）：5-9. |
| DONG Ze， ZHAI Yanbo， REN Zhiwei，et al.Research progress on phosphogypsum utilization in building materials［J］.Inorganic Che-micals Industry，2022，54（4）：5-9. | |
| 2 | 白海丹.我国磷石膏综合利用形势及对策建议［J］.磷肥与复肥，2020，35（12）：1-3. |
| BAI Haidan.Situation and countermeasures of comprehensive utilization of phosphogypsum in China［J］.Phosphate & Compound Fertilizer，2020，35（12）：1-3. | |
| 3 | HUSEIN MALKAWI D A， HUSEIN MALKAWI A I， BANI-HANI K A.Slope stability analysis for the phosphogypsum stockpiles：A case study for the sustainable management of the phosphogypsum stacks in Aqaba Jordan［J］.Sustainability，2022，14（23）：15763. |
| 4 | 张汉泉，许鑫，胡超杰，等.磷化工固体废弃物综合利用技术现状［J］.中国矿业，2021，30（4）：50-55，63. |
| ZHANG Hanquan， XU Xin， HU Chaojie，et al.Current situation of comprehensive utilization technology of solid waste of phosphorus chemical［J］.China Mining Magazine，2021，30（4）：50-55，63. | |
| 5 | 黄琬，谈云志，陈君廉，等.磷石膏团粒的制备与填充效应验证［J］.土木与环境工程学报，2022.Doi：10.11835/j.issn.2096-6717.2022.126. |
| HUANG Wan， TAN Yunzhi， CHEN Junlian，et al.Preparation and filling effect verification of phosphogypsum particles［J］.Journal of Civil and Environmental Engineering，2022.Doi：10.11835/j.issn.2096-6717.2022.126. | |
| 6 | DUTTA R K， KUMAR V.Suitability of flyash-lime-phosphogyps-um composite in road pavements［J］.Periodica Polytechnica Civil Engineering，2016，60（3）：455-469. |
| 7 | ZHANG Jixin， CHANG Jun， ZHANG Ping，et al.Effects of C＄H2 and CH on strength and hydration of calcium sulphoaluminate cement prepared from phosphogypsum［J］.Buildings，2022，12（10）：1692. |
| 8 | HOU Jiaojiao， NI Xiaoyang， LUO Xin.Analysis of the fractal growth characteristics and nucleation mechanism of phosphogyps-gypsum-based materials［J］.Journal of Wuhan University of Tech-nology：Mater.Sci.Ed.，2022，37（5）：863-875. |
| 9 | 崔荣政，白海丹，高永峰，等.磷石膏综合利用现状及“十四五”发展趋势［J］.无机盐工业，2022，54（4）：1-4. |
| CUI Rongzheng， BAI Haidan， GAO Yongfeng，et al.Current situation of comprehensive utilization of phosphogypsum and its development trend of 14th Five-Year Plan［J］.Inorganic Chemicals Industry，2022，54（4）：1-4. | |
| 10 | 卢文达.磷石膏制备α高强石膏的晶相调控与绿色制造研究［D］.武汉：武汉理工大学，2019. |
| LU Wenda.Crystal phase regulation and green manufacturing of preparation of α high-strength gypsum from phosphogypsum［D］.Wuhan：Wuhan University of Technology，2019. | |
| 11 | COSTA R P， DE MEDEIROS M H G， RODRIGUEZ MARTINEZ E D，et al.Effect of soluble phosphate，fluoride，and pH in Brazilian phosphogypsum used as setting retarder on Portland cement hydration［J］.Case Studies in Construction Materials，2022，17：e01413. |
| 12 | 吴泳霖，张伟，奠波，等.磷石膏热分解研究现状［J］.硅酸盐通报，2022，41（9）：3129-3137. |
| WU Yonglin， ZHANG Wei， DIAN Bo，et al.Research status of phosphogypsum pyrolysis［J］.Bulletin of the Chinese Ceramic Society，2022，41（9）：3129-3137. | |
| 13 | 张汉泉.多级动态磁化焙烧技术及其应用［J］.金属矿山，2012（9）：121-123，128. |
| ZHANG Hanquan.Technology and application of multi-grades dynamic state magnetizing roasting［J］.Metal Mine，2012（9）：121-123，128. | |
| 14 | ZHANG Hanquan， ZHANG Pengfei， ZHOU Feng，et al.Application of multi-stage dynamic magnetizing roasting technology on the utilization of cryptocrystalline oolitic hematite：A review［J］.International Journal of Mining Science and Technology，2022，32（4）：865-876. |
| 15 | FANG Ji， GE Yingyong， CHEN Zhijie，et al.Flotation purification of waste high-silica phosphogypsum［J］.Journal of Environmental Management，2022，320：115824. |
| 16 | ZHANG Han， CHAI Wencui， CAO Yijun.Flotation separation of quartz from gypsum using benzyl quaternary ammonium salt as collector［J］.Applied Surface Science，2022，576：151834. |
| 17 | 朱鹏程，曾波，王国栋.H2-Z捕收剂正浮选石膏性能研究［J］.矿冶工程，2015，35（1）：54-56，60. |
| ZHU Pengcheng， ZENG Bo， WANG Guodong.Performance of collector H2-Z in direct flotation of gypsum［J］.Mining and Metallurgical Engineering，2015，35（1）：54-56，60. | |
| 18 | 尹青亚，郑建国.工业副产石膏相关标准要求及质量控制［J］.新型建筑材料，2014，41（7）：35-38，49. |
| YIN Qingya， ZHENG Jianguo.Related standard requirements and quality control on the industrial by-product gypsum［J］.New Building Materials，2014，41（7）：35-38，49. | |
| 19 | 郑建国，汪卓敏，刘永川.GB/T 9776—2008《建筑石膏》修订说明［J］.新型建筑材料，2009，36（3）：13-16. |
| ZHENG Jianguo， WANG Zhuomin， LIU Yongchuan.Description of revised “building plaster” GB/T 9776—2008［J］.New Building Materials，2009，36（3）：13-16. | |
| 20 | 李美.磷石膏品质的影响因素及其建材资源化研究［D］.重庆：重庆大学，2012. |
| LI Mei.Study on quality infulencing factors of phosphogypsum and its utilization as building materials［D］.Chongqing：Chongqing University，2012. |
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