矿粉和生石灰高温改性对磷石膏水泥基材料性能影响

doi:10.19964/j.issn.1006-4990.2023-0408

Abstract

Abstract:

Due to the inevitable incorporation of impurities in phosphogypsum，its quality is poor，which further hinders the application of phosphogypsum.The effect of quicklime high-temperature modified phosphogypsum on the strength of cement-based materials was explored by using phosphogypsum and Portland cement as raw materials，and then the improvement effect of mineral powder on the defects of insufficient strength and rapid coagulation of high amount phosphogypsum cement-based materials was studied.Finally，XRD and SEM were used to analyze the hydration products of phosphogypsum cement-based materials，and the improvement mechanism of quicklime and mineral powder on the performance of phosphogypsum cement-based materials was revealed.The results showed that quicklime could successfully eliminate acid impurities in phosphogypsum at high temperature，improve the strength of the cementitious material，and taking into account the environmental protection and strength properties，the optimal amount of quicklime was 2%.The addition of mineral powder could further improve the strength of the cementitious material，delay the initial and final setting time of phosphogypsum cement-based material.With the continuous increase of mineral powder content，the strength of the cementitious material showed a trend of first increase and then decreased at 28 d.Taking into account all aspects of performance，the optimal amount of mineral powder was 20%.In addition，after adding mineral powder，the cementitious material generated interlaced hydroxylapatite in the microstructure at 28 d，which was structurally stable and conducive to the development of mechanical properties of phosphogypsum cement-based materials.

Key words: phosphogypsum, quicklime, modification mechanism, mineral powder, cement mortar

CLC Number:

TQ126.3

TU Yanping, BAI Dengxian, CHENG Shukai, XIE Junjie, HUANG Zhiliang, CHEN Guofu. Effect of high temperature modification of mineral powder and quicklime on properties of phosphogypsum cement based materials[J]. Inorganic Chemicals Industry, 2024, 56(6): 94-101.

Figures/Tables 12

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References 17

1	董泽，翟延波，任志威，等.磷石膏建材资源化利用研究进展［J］.无机盐工业，2022，54（4）：5-9.
	DONG Ze， ZHAI Yanbo， REN Zhiwei，et al.Research progress on phosphogypsum utilization in building materials［J］.Inorganic Che-Industry micals，2022，54（4）：5-9.
2	吴浩，韩超南，汤昱.我国磷石膏资源化利用研究进展［J］.现代化工，2023，43（3）：18-21.
	WU Hao， HAN Chaonan， TANG Yu.Research progress on reutilization of phosphogypsum in China［J］.Modern Chemical Industry，2023，43（3）：18-21.
3	ROSALES J， PÉREZ S M， CABRERA M，et al.Treated phosphogypsum as an alternative set regulator and mineral addition in cement production［J］.Journal of Cleaner Production，2020，244：118752.
4	周诗彤.磷对磷石膏胶结充填体材料性能和环境行为影响研究［D］.长沙：中南大学，2022.
	ZHOU Shitong.Effect of phosphorus on the material properties and environmental behavior of phosphogypsum-based cemented backfill［D］.Changsha：Central South University，2022.
5	杜明霞，王进明，董发勤，等.磷石膏资源化利用研究进展［J］.矿产保护与利用，2020，40（3）：121-126.
	DU Mingxia， WANG Jinming， DONG Faqin，et al.Research progress on resource utilization of phosphogypsum［J］.Conservation and Utilization of Mineral Resources，2020，40（3）：121-126.
6	赵静，段晓牧，刘佳佳，等.磷石膏复合胶凝材料配比优化及浸出机制［J］.矿业研究与开发，2023，43（4）：30-36.
	ZHAO Jing， DUAN Xiaomu， LIU Jiajia，et al.Ratio optimization and leaching mechanism of phosphogypsum composite cementitious material［J］.Mining Research and Development，2023，43（4）：30-36.
7	张太玥，谢凡，郭君渊.磷石膏基复合胶凝材料的性能优化及机理研究［J］.无机盐工业，2022，54（9）：136-142.
	ZHANG Taiyue， XIE Fan， GUO Junyuan.Study on performance optimization and mechanism of phosphogypsum based composite cementitious materials［J］.Inorganic Chemicals Industry，2022，54（9）：136-142.
8	何芋崎，李显波，杜亚文，等.粉磨细度对磷石膏物相转变速率和力学强度的影响研究［J］.矿产综合利用，2022（6）：36-41.
	HE Yuqi， LI Xianbo， DU Yawen，et al.Study on effect of grinding fineness on phase transformation rate and mechanical strength of phosphogypsum［J］.Multipurpose Utilization of Mineral Resour-ces，2022（6）：36-41.
9	JIANG Guanzhao， WU Aixiang， WANG Yiming，et al.Low cost and high efficiency utilization of hemihydrate phosphogypsum：Used as binder to prepare filling material［J］.Construction and Building Materials，2018，167：263-270.
10	杨林，曹建新，刘亚明.半水磷石膏的矿物学特征［J］.岩石矿物学杂志，2015，34（6）：827-834.
	YANG Lin， CAO Jianxin， LIU Yaming.Mineralogical characteristics of hemi-hydrate phosphogypsum［J］.Acta Petrologica et Mineralogica，2015，34（6）：827-834.
11	LIU Shuhua， FANG Peipei， REN Jun，et al.Application of lime neutralised phosphogypsum in supersulfated cement［J］.Journal of Cleaner Production，2020，272：122660.
12	程想，陈思翰，胡群，等.高温改性磷石膏基水泥砂浆强度性能研究［J］.非金属矿，2022，45（1）：37-40，45.
	CHENG Xiang， CHEN Sihan， HU Qun，et al.Study on the strength performance of modified phosphogypsum-based cement mortar［J］.Non-Metallic Mines，2022，45（1）：37-40，45.
13	余洋，沈承金，孙恕，等.矿粉水泥砂浆抗硫酸盐腐蚀行为研究［J］.腐蚀科学与防护技术，2014，26（4）：355-359.
	YU Yang， SHEN Chengjin， SUN Shu，et al.Sulfate corrosion behavior of slag cement mortar［J］.Corrosion Science and Protection Technology，2014，26（4）：355-359.
14	杨荣辉，水中和.磷石膏-矿渣体系水化过程与水化产物研究［J］.建材世界，2016，37（1）：33-36，41.
	YANG Ronghui， SHUI Zhonghe.Hydration process and hydrates of phosphgypsum-blastfurnace slag-cement blends［J］.The World of Building Materials，2016，37（1）：33-36，41.
15	厉超.矿渣、高/低钙粉煤灰玻璃体及其水化特性研究［D］.北京：清华大学，2011.
	LI Chao.Research on the glass phase of slag，high calcium fly ash and low calcium fly ash and their hydration mechanism［D］.Beijing：Tsinghua University，2011.
16	李宇，孙恒虎，赵永宏，等.水淬渣的胶凝活性及其形成机理［J］.过程工程学报，2007，7（1）：79-84.
	LI Yu， SUN Henghu， ZHAO Yonghong，et al.Research of formation mechanism on cementitious reactivity of water-cooled slag［J］.The Chinese Journal of Process Engineering，2007，7（1）：79-84.
17	汤玉娟，左晓宝，何绍丽，等.矿渣掺量和水胶比对水泥浆体溶蚀特性的影响［J］.硅酸盐学报，2016，44（11）：1579-1587.
	TANG Yujuan， ZUO Xiaobao， HE Shaoli，et al.Influences of slag content and water-binder ratio on leaching behavior of cement paste［J］.Journal of the Chinese Ceramic Society，2016，44（11）：1579-1587.

原材料	w （CaO）	w （SiO₂）	w （SO₃）	w （Al₂O₃）	w （MgO）	w （Fe₂O₃）	w （P₂O₅）	烧失量
磷石膏	46.31	2.23	41.01	1.04	0.24	1.05	5.33	2.79
水泥	62.01	19.60	3.71	5.02	2.01	4.45	0.19	3.01
生石灰	92.20	3.41	0.21	1.33	1.11	0.83	—	0.91
矿粉	36.61	33.12	2.03	14.71	9.34	0.92	—	3.27

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Effect of high temperature modification of mineral powder and quicklime on properties of phosphogypsum cement based materials

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