助熔成分对工程渣土烧制轻质陶粒性能的影响

doi:10.11896/cldb.21120103

材料导报

2023, Vol. 37

Issue (7): 21120103-6 https://doi.org/10.11896/cldb.21120103

无机非金属及其复合材料

助熔成分对工程渣土烧制轻质陶粒性能的影响

万文豪¹, 杨飞华², 王发洲¹, 张日红³, 刘云鹏^1,*

1 武汉理工大学硅酸盐建筑材料国家重点实验室,武汉 430070
2 北京建筑材料科学研究总院有限公司,北京 100000
3 宁波中淳高科股份有限公司,浙江宁波 315000

Effect of Fluxes on the Performance of Lightweight Ceramsite Prepared by Engineering Muck

WAN Wenhao¹, YANG Feihua², WANG Fazhou¹, ZHANG Rihong³, LIU Yunpeng^1,*

1 State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China
2 Beijing Building Materials Academy of Sciences Research, Beijing 100000, China
3 Ningbo Zhongchun Hi-Tech Co., Ltd., Ningbo 315000, Zhejiang, China

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摘要目前,利用固体废弃物烧制轻质陶粒的配料设计仍主要依赖于Riley三角形,但由于固体废弃物组成复杂,根据Riley三角形进行陶粒配料设计偶尔会表现出不适用性,而这种不适用性与Riley三角形对原料中复杂的助熔组分不加以区分有关,因此研究不同助熔成分对陶粒烧成过程与性能的影响有重要的意义。
本工作设计原料组成在Riley三角形相似的位置,研究了四种常见助熔成分掺量对陶粒烧胀行为、物理性能及晶相组成的影响,并建立三者之间的联系。结果表明,不同助熔成分对陶粒烧胀性能、物理性能及晶相组成有着不同的影响。MgO、CaO及Na₂CO₃均可明显改善陶粒的烧胀效果,但最佳的掺量及改善效果存在差异:MgO、CaO、Na₂CO₃掺量(质量分数)分别为1%、1.5%、2%时,分别可制备表观密度为1.38 g/cm³、1.06 g/cm³、0.96 g/cm³,单颗粒强度为9.8 MPa、3.9 MPa、4.9 MPa的陶粒。进一步研究表明,这种差异来源于不同助熔成分对晶相组成和液相性质的影响。本工作可为当前工业固废烧制陶粒的配料设计提供一定的参考。

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关键词: 轻骨料性能焙烧制度工业固体废弃物陶粒助熔剂

Abstract: Currently, lightweight aggregate(LWA) is mainly designed empirically based on the Riley scheme. Due to the complex composition of different solid waste, the proportioning design of ceramsite based on Riley triangle occasionally shows inapplicability. Therefore, it is necessary to study the influence of different flux on the performance of LWA.
In this study, the compositions of the raw materials with different fluxes were designed in similar locations in Riley triangle. Different fluxes had different effects on the sintering and swelling properties, physical properties, and crystal phase composition of LWA. The effects of four flux type and dosages on the swelling behavior, physical properties and crystal phase composition of the LWA were studied, while conclusively bridging them. The results showed that with MgO, CaO and Na₂CO₃ content of 1wt%, 1.5wt% and 2wt%, the apparent density of obtained LWA was 1.38 g/cm³, 1.06 g/cm³ and 0.96 g/cm³, and the strength was 9.8 MPa, 3.9 MPa and 4.9 MPa, respectively. Further research showed that the difference came from the effects of different flux components on crystal phase composition and liquid phase properties. This work can provide some reference for the proportioning design of ceramsite from solid waste.

Key words: LWA performance calcination regime industrial solid waste ceramsite flux

出版日期: 2023-04-10 发布日期: 2023-04-07

ZTFLH:

X705

基金资助: 国家重点研发计划项目(2018YFE0106300);固废资源化利用与节能建材国家重点实验室开放基金(20191h0592);宁波市科技创新2025重大专项(20191ZDYF020159)

通讯作者: * 刘云鹏,武汉理工大学硅酸盐建筑材料国家重点实验室副研究员、硕士研究生导师。2013年武汉理工大学博士毕业后留校工作至今。2017年11月至2018年11月在美国宾夕法尼亚州立大学访学一年。目前主要从事高性能轻骨料混凝土与聚合物改性混凝土等方面的研究工作,已发表学术论文30余篇。liuyunpeng@whut.edu.cn

作者简介: 万文豪,2020年6月毕业于湖北大学,获工学学士学位。现为武汉理工大学材料科学与工程学院硕士研究生,在刘云鹏副研究员的指导下开展高性能轻骨料的设计与制备方面的研究工作。

引用本文:

万文豪, 杨飞华, 王发洲, 张日红, 刘云鹏. 助熔成分对工程渣土烧制轻质陶粒性能的影响[J]. 材料导报, 2023, 37(7): 21120103-6.
WAN Wenhao, YANG Feihua, WANG Fazhou, ZHANG Rihong, LIU Yunpeng. Effect of Fluxes on the Performance of Lightweight Ceramsite Prepared by Engineering Muck. Materials Reports, 2023, 37(7): 21120103-6.

链接本文:

http://www.mater-rep.com/CN/10.11896/cldb.21120103 或 http://www.mater-rep.com/CN/Y2023/V37/I7/21120103

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