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 ›› 2016, Vol. 48 ›› Issue (3): 52-.

• 论文 • 上一篇    下一篇

不同处理方式对镁渣理化特性的影响

李咏玲1,2,戈 甜1,程芳琴1   

  1. 1.山西大学资源与环境工程研究所,国家环境保护煤炭废弃物资源化高效利用技术
    重点实验室,山西太原030006;2.山西农业大学文理学院
  • 出版日期:2016-03-10 发布日期:2016-03-11

Effect of different treatment methods on the physico-chemical properties of magnesium slag(MS)

Li Yongling1,2,Ge Tian1,Cheng Fangqin1   

  1. 1.State Environmental Protection Key Laboratory of Efficient Utilization Technology of Coal Waste Resources,
    Institute of Resources and Environment Engineering,Shanxi University,Taiyuan 030006,China;
    2.College of Arts and Science,Shanxi Agricultural University
  • Published:2016-03-10 Online:2016-03-11

摘要: 皮江法炼镁过程产生大量镁渣,镁渣的随意堆放会引发严重的环境问题。镁渣的理化特性对镁渣的综合利用有较大的影响。通过氮自动吸附仪(BET法)、X射线荧光光谱仪(XRF)、傅里叶红外光谱仪(FTIR)、X射线衍射仪(XRD)和扫描电镜(SEM),研究了自然冷、风冷和水淬3种处理方式对镁渣理化特性的影响。结果表明:镁渣为碱性废渣;不同处理方式对镁渣的冷却速度不同,因此对镁渣的粒径分布、孔分布、矿物组成、微观形态均有明显的影响,冷却速度越快粒径越大、孔径越大、比表面积越大、γ-硅酸二钙含量越低、β-硅酸二钙含量越高。

关键词: 镁渣, 冷却方式, 理化特性

Abstract: A lot of magnesium slag(MS) is produced in the production of metallic magnesium by Pidgeon′s reduction method, and the random dispose of magnesium slag caused serious environmental problems.The physico-chemical properties of magnesium slag have a big effect on its comprehensive utilization.The influences of three treatment methods,such as natural cooling,air cooling,and water quenching on physico-chemical properties of MS after furnacing,were studied by BET,XRF,FTIR,XRD,and SEM. The results indicated that MS was a kind of alkali slag; the different cooling methods can lead to great different in the physico-chemical properties,such as particle distribution,pore distribution,mineral composition,and micro morphology of treated slags;The bigger particle,pore size,and specific surface area,the lower content of γ-C2S and the higher content of β-C2S could be obtained for the higher cooling rate.

Key words: magnesium slags, cooling methods, physico-chemical properties

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