中国地质科学院矿产综合利用研究所主办
高级检索

磷石膏热处理制备免烧建材

,  ,  ,  , 

文章导航 > 矿产综合利用 > 2024 > 45(2): 23-29

上一篇

下一篇

李明东, 付得进, 勾碧波, 王家伟, 王海峰. 磷石膏热处理制备免烧建材[J]. 矿产综合利用, 2024, 45(2): 23-29. doi: 10.3969/j.issn.1000-6532.2024.02.004
引用本文: 李明东, 付得进, 勾碧波, 王家伟, 王海峰. 磷石膏热处理制备免烧建材[J]. 矿产综合利用, 2024, 45(2): 23-29. doi: 10.3969/j.issn.1000-6532.2024.02.004
shu
LI Mingdong, FU Dejin, GOU Bibo, WANG Jiawei, WANG Haifeng. Preparation of No Burning Building Materials by Phosphogypsum Heat Treatment[J]. Multipurpose Utilization of Mineral Resources, 2024, 45(2): 23-29. doi: 10.3969/j.issn.1000-6532.2024.02.004
Citation: LI Mingdong, FU Dejin, GOU Bibo, WANG Jiawei, WANG Haifeng. Preparation of No Burning Building Materials by Phosphogypsum Heat Treatment[J]. Multipurpose Utilization of Mineral Resources, 2024, 45(2): 23-29. doi: 10.3969/j.issn.1000-6532.2024.02.004
shu

磷石膏热处理制备免烧建材

  • 贵州大学材料与冶金学院，贵州省冶金工程与过程节能重点实验室，贵州　贵阳　550025

  • 基金项目: 国家自然科学基金（51764006、51764012）；贵州省科学合作计划项目（[2016]5302、[2017]5788、[2018]5781、[2019]1411、[2019]2841）
详细信息
    作者简介: 李明东（1996-），男，硕士研究生，研究方向为矿产资源综合利用
    通讯作者: 王海峰（1978-），男，副教授，研究方向为矿产资源综合利用。

  • 中图分类号: TD989

Preparation of No Burning Building Materials by Phosphogypsum Heat Treatment

  • College of Materials and Metallurgy, Guizhou University, Guizhou Provincial Key Laboratory of Metallurgical Engineering and Energy Saving, Guiyang 550025, Guizhou, China

More Information

    摘要

  • 这是一篇陶瓷及复合材料领域的论文。磷石膏排放量大，利用率低，资源化利用迫在眉睫。该研究以磷石膏为原料，经过激发预处理的磷石膏在不同温度下热处理，研究热处理温度对磷石膏的物相和微观结构，以及将其制备成免烧建材样品后的抗压强度、物相、微观结构的影响规律。结果表明，随着热处理温度的升高，二水石膏晶体结晶度增加，晶型发生转变，经过80 ℃热处理后的二水石膏晶粒致密，并且部分转变为半水石膏，由半水石膏水化重结晶生成的二水石膏对空隙进行填充，形成了结构致密，晶体相互粘合的内部微观结构，大大提高了免烧建材的抗压强度。免烧样品（磷石膏与水泥质量比为4∶1）养护7 d和28 d抗压强度达到36.45 MPa和38.12 MPa，并且浸水24 h的样品仍能保持21.03 MPa的抗压强度。

    This is an article in the field of ceramics and composites. Phosphogypsum has a large discharge and low utilization rate,and resource utilization is imminent. The heat treatment of phosphogypsum under different temperatures was studied. The influence of heat treatment temperature on the physical phase and microstructure of phosphogypsum, and the compressive strength, phase and microstructure of non burningsample of building materials by the treated phosphogypsum were studied. The results show that with the increase of heat treatment temperature, the crystallinity of gypsum increases and the crystal form changes. After heat treatment at 80 ℃, the crystal of gypsum is dense, and part of it is converted into hemihydrate gypsum. The Gypsum dihydrate formed by hydration recrystallization of hemihydrate gypsum fills the void, forming the internal microstructure of dense and mutual bonding of crystals, so the compressive strength of no burning building materials is greatly improved. After curing for 7 days and 28 days, the compressive strength of non burningsample (the mass ratio of phosphogypsum to cement is 4∶1) reaches 36.45 MPa and 38.12 MPa. The compressive strength of the sample soaked in water for 24 hours is still 21.03 MPa.

    • HTML全文
  • 加载中

  • 图 1  磷石膏的XRD

    Figure 1. 

    下载: 全尺寸图片 幻灯片

    图 2  不同放大倍数下的磷石膏SEM(a-200times，b-500times)

    Figure 2. 

    下载: 全尺寸图片 幻灯片

    图 3  实验流程

    Figure 3. 

    下载: 全尺寸图片 幻灯片

    图 4  激发后的磷石膏在不同热处理温度下的XRD

    Figure 4. 

    下载: 全尺寸图片 幻灯片

    图 5  激发后的磷石膏在不同热处理温度下的SEM (a-25 ℃,b-40 ℃,c-60 ℃,d-80 ℃,e-100 ℃)

    Figure 5. 

    下载: 全尺寸图片 幻灯片

    图 6  热处理温度对抗压强度的影响

    Figure 6. 

    下载: 全尺寸图片 幻灯片

    图 7  磷石膏在不同热处理温度后制备的免烧建材XRD

    Figure 7. 

    下载: 全尺寸图片 幻灯片

    图 8  磷石膏在不同热处理温度后制备的免烧建材SEM(a-25 ℃,b-40 ℃,c-60 ℃,d-80 ℃,e-100 ℃)

    Figure 8. 

    下载: 全尺寸图片 幻灯片

    表 1  磷石膏主要化学成分/%

    Table 1.  The main chemical components of phosphogypsum

    SO3CaOMgOFe2O3Al2O3SiO2
    47.0132.210.450.230.348.28
    下载: 导出CSV
    • 参考文献(10)
  • [1]

    马丽萍. 云南磷石膏资源化综合利用现状及发展思考[J]. 云南化工, 2019, 46(11):48-56.MA L P. Yunnan phosphogypsum resource utilization status quo and development thinking[J]. Yunnan Chemical Industry, 2019, 46(11):48-56.

    MA L P. Yunnan phosphogypsum resource utilization status quo and development thinking[J]. Yunnan Chemical Industry, 2019, 46(11):48-56.

    [2]

    唐湘平, 李超, 黄云阶, 等. 四川某地磷石膏开发利用试验研究[J]. 矿产综合利用, 2019(5): 28-31.TANG X P, LI C , HUANG Y J, et al. Experimental study on development and utilization of phosphogypsum in Sichuan[J]. Multipurpose Utilization of Mineral Resources, 2019(5): 28-31.

    TANG X P, LI C , HUANG Y J, et al. Experimental study on development and utilization of phosphogypsum in Sichuan[J]. Multipurpose Utilization of Mineral Resources, 2019(5): 28-31.

    [3]

    胡敏, 彭丽, 郭娜, 等. 磷石膏- 炭化污泥胶凝材料力学性能试验研究[J]. 矿产综合利用, 2020(4):196-201.HU M, PENG L, GUO N, et al. Study on mechanical properties of phosphogypsum-carbonized sludge composite cementitious materials[J]. Multipurpose Utilization of Mineral Resources, 2020(4):196-201.

    HU M, PENG L, GUO N, et al. Study on mechanical properties of phosphogypsum-carbonized sludge composite cementitious materials[J]. Multipurpose Utilization of Mineral Resources, 2020(4):196-201.

    [4]

    牛福生, 吴海军, 吴根, 等. 铁尾矿地砖的制备及其机理分析[J]. 再生资源研究, 2007(4):41-44.NIU F S, WU H J, WU G, et al. Preparation of iron tailings floor tile and its mechanism analysis[J]. Renewable Resources Research, 2007(4):41-44.

    NIU F S, WU H J, WU G, et al. Preparation of iron tailings floor tile and its mechanism analysis[J]. Renewable Resources Research, 2007(4):41-44.

    [5]

    赵士豪, 王桂明, 孙涛, 等. 过硫磷石膏水泥砌筑用免烧砖的制备及养护制度研究[J]. 建材世界, 2017, 38(2):18-21.ZHAO S H, WANG G M, SUN T, et al. Research on the preparation and maintenance system of free-fired bricks for masonry with persulfurized phosphogypsum cement[J]. Building materials world, 2017, 38(2):18-21.

    ZHAO S H, WANG G M, SUN T, et al. Research on the preparation and maintenance system of free-fired bricks for masonry with persulfurized phosphogypsum cement[J]. Building materials world, 2017, 38(2):18-21.

    [6]

    郭小雨, 樊传刚, 裴立宅, 等. 磷石膏免烧砖的性能及其重金属离子固定研究[J]. 新型建筑材料, 2020, 47(10): 127-131.GUO X Y , FAN C G, PEI L Z, et al. Study on the properties of phosphogypsum no-burn bricks and their heavy metal ion immobilization[J]. New Building Materials, 2020, 47(10): 127-131.

    GUO X Y , FAN C G, PEI L Z, et al. Study on the properties of phosphogypsum no-burn bricks and their heavy metal ion immobilization[J]. New Building Materials, 2020, 47(10): 127-131.

    [7]

    田佳瑜, 王海峰, 尤晓宇, 等. 磷石膏激发预处理及其制备免烧建材的研究[J]. 硅酸盐通报, 2020, 39(12):3897-3904.TIAN J Y, WANG H F, YOU X Y, et al. Research on phosphogypsum excitation pretreatment and its preparation of no-burn building materials[J]. Silicate Bulletin, 2020, 39(12):3897-3904.

    TIAN J Y, WANG H F, YOU X Y, et al. Research on phosphogypsum excitation pretreatment and its preparation of no-burn building materials[J]. Silicate Bulletin, 2020, 39(12):3897-3904.

    [8]

    Haifeng Wang , Xiaoyu You, Jiayu Tian, et al. Study on pretreatment of phosphogypsum and preparation of non burning building materials[J]. Earth and Environmental Science. 2021, 668: 012076

    [9]

    高辉. 高掺量磷石膏免烧砖制备新工艺及机理研究[D]. 武汉: 中国地质大学(武汉), 2012.GAO H. Research on new process and mechanism of preparation of high dosage phosphogypsum no-burn bricks [D]. Wuhan: China University of Geosciences (Wuhan), 2012.

    GAO H. Research on new process and mechanism of preparation of high dosage phosphogypsum no-burn bricks [D]. Wuhan: China University of Geosciences (Wuhan), 2012.

    [10]

    茹晓红. 磷石膏基胶凝材料的制备理论及应用技术研究[D]. 武汉: 武汉理工大学, 2013.RU X H. Research on the preparation theory and application technology of phosphogypsum-based cementitious materials[D]. Wuhan: Wuhan University of Technology, 2013.

    RU X H. Research on the preparation theory and application technology of phosphogypsum-based cementitious materials[D]. Wuhan: Wuhan University of Technology, 2013.

    • 相关文章
  • 施引文献
  • 资源附件(0)
  • 加载中

图(8)

表(1)

计量
  • 文章访问数:  658
  • PDF下载数:  236
  • 施引文献:  0
出版历程
收稿日期:  2022-05-13
刊出日期:  2024-04-25

目录

    版权所有：中国地质调查局发展研究中心 copyright @2020
    返回