学科分类
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1 个结果
  • 简介:Calciumsulfatehemihydrate(CSH)whiskersweresynthesizedbyphasetransitioninCaCl2solutionunderatmosphericpressure.Analytical-gradecalciumsulfatedihydrate(ARCSD)wasusedastherawmaterialforthesynthesisofCSHwhiskers,accordingtoorthogonalexperiments.Theeffectsofreactiontemperature,ARCSDcontent,H2SO4content,andreactiontimewereinvestigated,andthecrystallizationconditionswereoptimized.Theas-preparedCSHwhiskersdisplayedaregularmorphologyandahighlyuniformsize,withanaspectratioof105.AsimulationsystemwasalsoestablishedbyblendingvarioussulfateswithARCSD,toevaluatetheeffectsofimpuritiesinfluegasdesulfurization(FGD)gypsum.ThemainaimwastoprepareCSHwhiskersdirectlyfromFGDgypsum,withoutanypurification,usingtheoptimizedconditions.Thisisafacilepotentialalternativeprocessforlarge-scaleproductionofCSHwhiskersusingabundantFGDgypsumassourcematerials.

  • 标签: 硫酸钙晶须 脱硫石膏 直接转化 半水 FGD石膏 模拟