无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ
环境·健康·安全

以浓厚卤水为原料制备半水硫酸钙晶须的研究

  • 唐娜 ,
  • 黑云皓 ,
  • 吴腾飞 ,
  • 项军 ,
  • 杜威 ,
  • 张蕾
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  • 1.天津科技大学化工与材料学院,天津 300457
    2.天津市卤水化工与资源生态化利用重点实验室
唐娜(1972— ),女,博士,教授、博士生导师,主要研究方向为海卤水综合利用、膜与膜过程,已发表论文100余篇;E-mail: tjtangna@tust.edu.cn 。

收稿日期: 2019-10-28

  网络出版日期: 2020-04-22

Study on preparation of hemihydrate calcium sulfate whisker from dense brine

  • Na Tang ,
  • Yunhao Hei ,
  • Tengfei Wu ,
  • Jun Xiang ,
  • Wei Du ,
  • Lei Zhang
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  • 1.College of Chemical Engineering and Materials,Tianjin University of Science and Technology,Tianjin 300457,China
    2.Tianjin Key Laboratory of Brine Chemical Industry and Ecological Utilization of Resources)

Received date: 2019-10-28

  Online published: 2020-04-22

摘要

以海盐行业生产过程中废弃的浓厚卤水为原料,用于制备高长径比的半水硫酸钙晶须。探究了水热制备法中物料浓度、晶型助长剂浓度、反应时间、反应温度和反应搅拌速率对制备半水硫酸钙晶须的影响。使用粉末X射线衍射仪、扫描电子显微镜对制得的半水硫酸钙晶须进行表征,确认为半水硫酸钙晶须。通过正交实验确认最佳的生产工艺条件为:物料质量分数为3%、晶型助长剂质量分数为3%、反应时间为7 h、反应温度为130 ℃、反应搅拌速率为30 r/min。在此工艺条件下可制得长径比约为400的半水硫酸钙晶须。该工艺生产成本低廉、环境友好、产品稳定且平均长径比达400,易于工业化生产。

本文引用格式

唐娜 , 黑云皓 , 吴腾飞 , 项军 , 杜威 , 张蕾 . 以浓厚卤水为原料制备半水硫酸钙晶须的研究[J]. 无机盐工业, 2020 , 52(4) : 88 -92 . DOI: 10.11962/1006-4990.2019-0312

Abstract

Calcium sulfate hemihydrate whisker with high length/diameterm(L/D) ratio was prepared from high concentration brine abandoned in the production process of sea salt industry.The effects of material concentration,crystal growth promoter concentration,reaction time,reaction temperature and reaction stirring rate on the preparation of calcium sulfate hemihydrate whisker were investigated.The prepared calcium sulfate hemihydrate whisker was characterized and confirmed by powder X-ray diffractometer and scanning electron microscope.Through the orthogonal experimental,the optimum conditions were con-firmed as follows:material mass fraction of 3%,crystal growth aid mass fraction of 3%,reaction time of 7 h,reaction tempera-ture of 130 ℃ and reaction stirring rate of 30 r/min.Under this condition,calcium sulfate hemihydrate whiskers with the L/D ratio of 400 were produced.The technology has the advantages of low production cost,environment friendly and stablity.The prepared calcium sulfate hemihydrate whisker with average L/D ratio of 400 is easy to produce industrially.

参考文献

[1] Fan H, Song X, Liu T , et al. Effect of Al 3+ on crystal morphology and size of calcium sulfate hemihydrate:Experimental and molecular dynamics simulation study [J]. Journal of Crystal Growth, 2018,495:29-36.
[2] Fan H, Song X, Xu Y , et al. Insights into the modification for impro-ving the surface property of calcium sulfate whisker:Experimental and DFT simulation study[J]. Applied Surface Science, 2019,478:594-600.
[3] Han Q, Luo K, Li H , et al. Influence of disodium hydrogen phosphate dodecahydrate on hydrothermal formation of hemihydrate calcium sulfate whiskers[J]. Particuology, 2014,17:131-135.
[4] Liu C, Zhao Q, Wang Y , et al. Surface modification of calcium sul-fate whisker prepared from flue gas desulfurization gypsum[J]. App-lied Surface Science, 2016,360:263-269.
[5] Luo K, Li C, Xiang L , et al. Influence of temperature and solution composition on the formation of calcium sulfates[J]. Particuology, 2010,8(3):240-244.
[6] 崔益顺 . 磷石膏制备硫酸钙晶须的研究[J]. 无机盐工业, 2010,42(9):49-50.
[7] Mao X, Song X, Lu G , et al. Effect of additives on the morphology of calcium sulfate hemihydrate:Experimental and molecular dynamics simulation studies[J]. Chemical Engineering Journal, 2015,278:320-327.
[8] Miao M, Feng X, Wang G , et al. Direct transformation of FGD gyps-um to calcium sulfate hemihydrate whiskers: Preparation, simula-tions, and process analysis[J]. Particuology, 2015,19(2):53-59.
[9] Sun H, Tan D, Peng T , et al. Preparation of calcium sulfate whisker by atmospheric acidification method from flue gas desulfurization gypsum[J]. Procedia Environmental Sciences, 2016,31:621-626.
[10] Tan H, Dong F, Liu J . Morphology control of calcium sulfate hemi-hydrates and application in size screening iron/sulfur of jarosite sediment[J]. Journal of Physics and Chemistry of Solids, 2018,112:239-245.
[11] Teng W, Wang J, Wu J , et al.Rapid synjournal of alpha calcium sul-fate hemihydrate whiskers in glycerol-water solution by using flue-gas-desulfurization gypsum solid waste[J].Journal of Crystal Gro-wth, 2018,496/497:24-30.
[12] 黄哲元, 董发勤, 张伟 . 硫酸钙晶须的制备进展[J]. 无机盐工业, 2009,41(8):6-8.
[13] 刘崇峻 . 药物水合物结晶热力学及转晶过程研究[D]. 天津:天津大学, 2013.
[14] 方羊 . 水热法制备半水硫酸钙晶须及其长径比的可控研究[D]. 合肥:合肥工业大学, 2017.
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