废石膏制备硫酸钙晶须的高附加值利用前景  

The high value-added utilization prospect of calcium sulfate whiskers prepared from waste gypsum

作　　者：赵晨阳 吴丰辉 瞿广飞[1] 曾映达 周俊宏 李应丽 杨玉益 李军燕[1] ZHAO Chenyang;WU Fenghui;QU Guangfei;ZENG Yingda;ZHOU Junhong;LI Yingli;YANG Yuyi;LI Junyan(Faculty of environmental science and engineering,Kunming University of Science and Technology,Kunming,650500,China)

机构地区：[1]昆明理工大学环境科学与工程学院,昆明650500

出　　处：《环境化学》2022年第3期1086-1096,共11页Environmental Chemistry

基　　金：国家重点研发计划课题(2018YFC1900203);国家自然科学基金地区(51968033)资助.

摘　　要：目前全球范围内石膏资源储量丰富,种类繁多,但开发利用率低。特别是脱硫石膏、磷石膏固有堆存量大,其每年年产量逐渐剧增,大部分废石膏中含有大量有害组分,不仅会对地表水和地下水体造成污染威胁、影响环境卫生,而且会造成资源的极大浪费;由于其处理成本高、具有较大的潜在风险,截至目前,仍没有较好的石膏处理途径。石膏的主要成分是硫酸钙,硫酸钙晶须是一种良好的材料合成添加剂,对材料的各项性能均有改善作用,因而具有广阔的研究价值和市场前景。本文通过对比石膏的多种处理方法和硫酸钙晶须的制备方法,突出硫酸钙晶须的运用前景、市场前景,表明其市场价值和环境价值,提出运用石膏制备硫酸钙晶须的新控制理论,为石膏制备硫酸钙晶须的高附加值资源化利用提供理论支撑。At present,the global reserves of gypsum resources are abundant,but the development utilization rate is still in a low level.Especially for the large production and inherent stockpiles of desulfurized gypsum and phosphogypsum,and most of the waste gypsum poses a threat to surface water and groundwater,affects environmental sanitation,but it also a huge waste of energy resource.However,due to the high processing cost and high potential risk of gypsum,there hardly find an efficient way to treat them.In general,the main component of desulfurized gypsum is calcium sulfate,and the calcium sulfate whiskers is a promising additive,which could reach a promising improvement to the performance of materials with a broad research value and market prospects.In this paper,we compared several treatment methods of desulfurization gypsum and the preparation methods of calcium sulfate whiskers,highlights the application prospects and market prospects of calcium sulfate whiskers,and shows its social and environmental values,then proposes the use of desulfurization gypsum to prepare calcium sulfate whiskers.The new control theory shows that the use of flue gas desulfurization gypsum to prepare calcium sulfate whiskers is an efficient way to treat high value-added resources of desulfurization gypsum solid waste.

关 键 词：晶体 晶须 控制 石膏 资源化 

分 类 号：TQ132.32[化学工程—无机化工] O784[理学—晶体学] TQ177.375