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

无机盐工业 ›› 2020, Vol. 52 ›› Issue (1): 73-75.doi: 10.11962/1006-4990.2019-0095

• 环境·健康·安全 • 上一篇    下一篇

磷渣粉改性磷石膏实验研究

郑绍聪1,汪帆1,朱丽苹1,徐成坤2   

  1. 1. 曲靖师范学院化学与环境科学学院,云南曲靖 655011
    2. 曲靖卷烟厂
  • 收稿日期:2019-07-14 出版日期:2020-01-10 发布日期:2020-02-26
  • 作者简介:郑绍聪(1981— ),男,博士,研究方向为石膏基新材料,已发表论文20余篇,获发明专利授权3项;E-mail:31602992@qq.com。
  • 基金资助:
    云南省教育厅重点项目(2017zzx184);云南省教育厅重点项目(2018JS450);大学生创新训练项目(201710684017)

Experimental study on influence of phosphogypsum with modified phosphorus slag powder

Zheng Shaocong1,Wang Fan1,Zhu Liping1,Xu Chengkun2   

  1. 1. College of Chemistry and Environmental Sciences,Qujing Normal University,Qujing 655011,China
    2. Qujing Cigarette Factory
  • Received:2019-07-14 Published:2020-01-10 Online:2020-02-26

摘要:

以磷建筑石膏为原料,研究磷渣粉对磷建筑石膏力学性能和微观性能的影响。采用抗折抗压试验机研究力学性能,SEM电镜研究微观形貌。结果表明:FDN减水剂添加量为1.5‰,改性磷渣粉掺量在10%~15%范围内时,磷石膏基制品抗折强度均达到7.0 MPa以上,抗压强度达到15.0 MPa以上,约为空白样的2倍,效果显著。通过SEM电镜分析磷建筑石膏水化前后微观形貌,结果表明,添加磷渣改性材料后,磷石膏水化晶体形貌从片状或条状改变成短柱状或中空管状结构,大大提高了磷石膏基材料性能指标,为磷石膏生产石膏砂浆提供了理论和技术支持。

关键词: 磷石膏, 磷渣粉, 微观分析

Abstract:

The effect of phosphorus slag powder on the mechanical property and micro-property of raw material phosphogypsum was studied.The mechanical property was studied by bending and compression testing machine.The micro morphology was studied by SEM.Results showed that addition of FDN were 1.5‰.The additions of modified phosphorus slag powder was at 10%~15%.The flexural strength and compressive strength of phosphogypsum-based products were above 7.0 MPa and 15.0 MPa respectively.It was about 2 times than the blank sample.The micro morphologies of phosphogypsums before and af-ter hydration were analyzed by SEM.Results showed that the micro morphology of phosphogypsum-based mortar grew from flake or strip to short column or hollow tubular structure after adding phosphogypsum modified material,which greatly improved the performance index of phosphogypsum-based mortar material and provided theoretical and technical support for the production of gypsum mortar with phosphogypsum.

Key words: phosphogypsum, phosphorus slag powder, microstructure analysis

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