【作者】 万甜明； 张志业； 王辛龙； 钟本和；

【Author】 Tianming Wan,Zhiye Zhang,Xinlong Wang,Benhe Zhong School of Chemical Engineering,Sichuan University,Sichuan,Chengdu,610065

【机构】 四川大学化学工程学院；

【摘要】 <正>传统焦炭还原磷石膏制酸过程中易产生大量的液相造成回转窑内结皮、结圈、粘结和堵塞等问题,因此了解其熔融特性对于指导磷石膏制酸的扩大生产具有着重要意义,但长期以来,相关研究却十分有限。更多还原

【Abstract】 In order to effectively prevented formation of the problems such as coating formation,ring formation, bonding and blocking,etc.,in the rotary kiln,the effect of various additives and reaction atmosphere on the melting characteristics during the solid-solid reaction process of phosphogypsum and calcium sulfide has been investigated. The result shows that the effective additive of increasing the melting softening temperature during the decomposition of phosphogypsum were kaolin and mixed atmosphere containing SO2,CO2 and N2,respectively, while the additives including SiO2,AlPO4,FePO4?2H2O and Na2SiF6 etc.played a role in fluxing action.更多还原