磷石膏煅烧工艺进展分析
收稿日期: 2022-07-25
网络出版日期: 2023-06-14
基金资助
云南省工业领域科技计划项目重点研发计划(202103AA080012)
Analysis on calcination process progress of phosphogypsum
Received date: 2022-07-25
Online published: 2023-06-14
磷石膏作为主要的工业副产石膏，通过煅烧制备得到建材石膏粉体。归纳了国内外现有磷石膏煅烧工艺特点及利弊，针对现有的炒锅、回转窑、沸腾炉、彼得磨、FC-沸腾炉、锤式粉碎等煅烧工艺存在的产品质量不稳定、可控性差、功能单一、能耗高、投资高等技术及装备问题，提出流化床煅烧工艺。重点介绍了流化床煅烧磷石膏工艺技术具有大型化、流态化、产品多元化、干法净化、绿色环保的特点及技术创新优势。并与目前主流煅烧工艺产品性能指标分析进行对比，得出流化床煅烧磷石膏工艺产品质量稳定性好、可控性强、性能指标优越，必然成为未来磷石膏制备建材石膏粉体的主流技术手段，为中国磷石膏的煅烧资源化利用提供指导价值。
李恒 , 张晖 , 资学民 . 磷石膏煅烧工艺进展分析[J]. 无机盐工业, 2023 , 55(6) : 27 -35 . DOI: 10.19964/j.issn.1006-4990.2022-0451
As the primary industrial by-product of gypsum，phosphogypsum could be prepared by calcination to obtain building material gypsum powder.The characteristics and advantages as well as the disadvantages of existing phosphogypsum calcination processes at home and abroad were summarized.In view of the existing calcination processes such as frying pan，rotary kiln，boiling furnace，Peter grinding，FC-boiling furnace，hammer crushing and so on，there were some technical and equipment problems，such as unstable product quality，poor controllability，single function，high energy consumption and high investment，thereby the fluidized bed calcination process was proposed.The characteristics and technological innovation advantages with large-scale fluidization，product diversification，dry purification green and environmental protection were highlighted.Moreover，it was also compared with the current mainstream calcination process product performance index.It was analyzed that quality stability，controllability and performance index of the fluidized bed calcination phosphogypsum technology product were superior，which would become the future phosphogypsum preparation of building materials gypsum powder mainstream technology means.And it could provide guidance value for the calcination and resource utilization of phosphogypsum eventually in China.
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