1.昆明理工大学化学工程学院,云南 昆明 650500
2.昆明冶金职业大学环境与化工学院,云南 昆明 650033
3.云南精石新型建材科技有限公司,云南 昆明 654100
4.中铁八局集团昆明铁路建设有限公司,云南 昆明 650200
刘恋明(2001年生),男;研究方向:固体废弃物资源化利用;E-mail:20232208008@stu.kust.edu.cn
阎崔蓉(1988年生),女;研究方向:固体废弃物资源化利用;E-mail:yancuirong@stu.kust.edu.cn;
张浩(1988年生),男;研究方向:固体废弃物资源化利用;E-mail:jskjhao@126.com
收稿:2026-01-07,
修回:2026-01-27,
录用:2026-02-11,
网络首发:2026-04,
移动端阅览
刘恋明, 赵晓腾, 阎崔蓉, 等. 矿渣基草酸钙水泥性能及其反应机理[J/OL]. 中山大学学报(自然科学版)(中英文), 2026,1-9.
LIU Lianming, ZHAO Xiaoteng, YAN Cuirong, et al. Performance and reaction mechanism of slag-based calcium oxalate cement[J/OL]. Acta Scientiarum Naturalium Universitatis Sunyatseni, 2026, 1-9.
刘恋明, 赵晓腾, 阎崔蓉, 等. 矿渣基草酸钙水泥性能及其反应机理[J/OL]. 中山大学学报(自然科学版)(中英文), 2026,1-9. DOI: 10.11714/acta.snus.ZR20260007.
LIU Lianming, ZHAO Xiaoteng, YAN Cuirong, et al. Performance and reaction mechanism of slag-based calcium oxalate cement[J/OL]. Acta Scientiarum Naturalium Universitatis Sunyatseni, 2026, 1-9. DOI: 10.11714/acta.snus.ZR20260007.
为实现含钛高炉矿渣(TBBFS)的高值资源化利用,基于TBBFS的高钙特性,以TBBFS为钙源、草酸(OA)为酸激发剂、硼砂(BX)为缓凝剂,通过常温酸碱反应制备了矿渣基草酸钙水泥(COC),系统考察了TBBFS与OA质量比[
m
(TBBFS)/
m
(OA)]及缓凝剂掺量对材料力学性能与水化过程的影响。结果表明,当
m
(TBBFS)/
m
(OA)=6∶1,缓凝剂掺量0.5%(
w
)时,所制备的草酸钙水泥初凝时间为11.32 min,28 d抗压强度可达27.05 MPa,兼具良好的施工性能与力学性能。主要水化产物为CaC
2
O
4
·2H
2
O和无定形硅酸/二氧化硅凝胶,硬化机理体现为多步骤协同的物相
构建过程。在该体系中,OA溶解后形成的酸性环境促使TBBFS中钙硅酸盐相溶解释放Ca
2+
与SiO
4
4-
,分别与C
2
O
4
2-
及H⁺反应,先后生成凝胶相CaC
2
O
4
·2H
2
O和具有增韧与填充作用的无定形硅酸/二氧化硅。同时,化学惰性的钛酸钙(CaTiO
3
)均匀分布于基体中,起到微集料增强作用。形成的“刚性骨架-柔性界面-惰性填充”的多级复合结构,通过各物相在微观尺度上的有序形成与协同作用,实现了材料强度、韧性与耐久性的协同提升。
To achieve high-value utilization of titanium-bearing blast furnace slag(TBBFS),this study employed high-calcium content TBBFS as a calcium source,oxalic acid as an acid activator,and borax as a retarder to prepare slag-based calcium oxalate cement(COC)via an acid-base reaction. The effects of the mass ratio of TBBFS to oxalic acid[
m
(TBBFS)/
m
(OA)]and the retarder dosage on the mechanical properties and hydration process of COC were systematically investigated.The results showed that at a
m
(TBBFS)/
m
(OA) ratio of 6 and a retarder dosage of 0.5%,the prepared COC exhibited an initial setting time of 11.32 min and compressive strength of 27.05 MPa (28 d),demonstrating both favorable workability and mechanical performance.The main hydration products were identified as CaC
2
O
4
·2H
2
O and amorphous silicic acid/silica. The hardening mechanism involves a multi-step synergistic phase-formation process.First, the acidic environment created by the dissolution of oxalic acid promotes the release of Ca
2+
and SiO
4
2-
ions from calcium silicate.These ions then react with oxalate(C
2
O
4
2-
) and hydrogen ions(H
+
) to form the primary binding phase(CaC
2
O
4
·2H
2
O), while the resulting amorphous silicic acid or silica gel contributes to toughening and pore-filling.Meanwhile, chemically inert calcium titanate(CaTiO
3
)particles are uniformly distributed throughout the matrix,functioning as reinforcing micro-aggregates.This hierarchical c
omposite structure achieves a synergistic enhancement in strength,toughness,and durability through the orderly formation and cooperative interaction of different phases at the microscale.
胡捷 , 王艳 , 张少辉 , 等 , 2023 . 镁质胶凝材料制备与分类、水化机理及耐久性能 [J]. 矿业科学学报 , 8 ( 6 ): 856 - 867 .
李有余 , 2025 . 含钛高炉渣中钛预富集分离相关的基础研究 [D]. 北京 : 北京科技大学 .
李娜秋 , 2019 . 铜渣基铁系磷酸盐化学键合材料的制备及其对重金属的固化研究 [D]. 昆明 : 昆明理工大学 .
李日升 , 张澄博 , 杨明 , 等 , 2022 . 基于MICP改性的广州南沙区水泥土的强度及微观特征 [J]. 中山大学学报(自然科学版)(中英文) , 61 ( 4 ): 133 - 141 .
昆明理工大学 , 2016 . 一种铜渣基铁系草酸盐化学键合材料及其用途 : CN106007430A [P]. 2016-10-12 .
昆明理工大学 , 2018 . 一种渣基化学键合草酸盐磷酸盐陶瓷及其应用 : 201810156911.1 [P]. 2018-02-11 .
肖汉宁 , 刘洋 , 时海霞 , 2003 . 高炉渣含量与热处理制度对矿渣微晶玻璃性能的影响(英文) [J]. 中山大学学报(自然科学版) , 42 ( S1 ): 107 - 110 .
薛永杰 , 侯浩波 , 查进 , 2007 . 高烧失量粉煤灰对水泥浆体的力学和耐久性能的影响研究(英文) [J]. 中山大学学报(自然科学版) , 46 ( S1 ): 91 - 92 .
杨华美 , 石妍 , 杨华全 , 2010 . 高钛矿渣-水泥复合胶凝材料体系的水化机理研究 [J]. 长江科学院院报 , 27 ( 3 ): 54 - 58 .
AMBARD A J , MUENINGHOFF L , 2006 . Calcium phosphate cement: Review of mechanical and biological properties [J]. J Prosthodont , 15 ( 5 ): 321 - 328 .
HUANG X , WU H , LU D , 2021 . Preparation of novel chemically bonded ceramics with steel slag and potassium hydrogen oxalate [J]. J Hazard Mater , 403 : 124042 .
JING J F , GUO Y F , WANG S , et al , 2022 . Recent progress in electric furnace titanium slag processing and utilization: A review [J]. Crystals , 12 ( 7 ): 958 .
LIU Y , KUMAR S , KWAG J H , et al , 2013 . Magnesium ammonium phosphate formation, recovery and its application as valuable resources: A review [J]. J Chemical Tech & Biotech , 88 ( 2 ): 181 - 189 .
LUO Z , MA Y , HE H , et al , 2021 . Preparation and characterization of ferrous oxalate cement—A novel acid-base cement [J]. J Am Ceram Soc , 104 ( 2 ): 1120 - 1131 .
MA H , XU B , LI Z , 2014 . Magnesium potassium phosphate cement paste: Degree of reaction, porosity and pore structure [J]. Cem Concr Res , 65 : 96 - 104 .
ROY D M , 1987 . New strong cement materials: Chemically bonded ceramics [J]. Science , 235 ( 4789 ): 651 - 658 .
SANDERSON P , NAIDU R , BOLAN N , et al , 2015 . Chemical stabilisation of lead in shooting range soils with phosphate and magnesium oxide: Synchrotron investigation [J]. J Hazard Mater , 299 : 395 - 403 .
SCHUMACHER M , REITHER L , THOMAS J , et al , 2017 . Calcium phosphate bone cement/mesoporous bioactive glass composites for controlled growth factor delivery [J]. Biomater Sci , 5 ( 3 ): 578 - 588 .
WAGH A S , 2016 . Chemically Bonded Phosphate Ceramics: Twenty-First Century Materials with Diverse Applications: Second Edition [M]. Oxford, UK : Elsevier:35- 49 .
WILSON A D , NICHOLSON J W , 2005 . Acid-base cements: Their biomedical and industrial applications [M]. Cambridge, United Kingdom : Cambridge University Press:203- 205 .
WU F , SU J , WEI J , et al , 2008 . Injectable bioactive calcium-magnesium phosphate cement for bone regeneration [J]. Biomed Mater , 3 ( 4 ): 044105 .
XIA W Y , FENG Y S , JIN F , et al , 2017 . Stabilization and solidification of a heavy metal contaminated site soil using a hydroxyapatite based binder [J]. Constr Build Mater , 156 : 199 - 207 .
XU B , MA H , HU C , et al , 2016 . Influence of cenospheres on properties of magnesium oxychloride cement-based composites [J]. Mater Struct , 49 ( 4 ): 1319 - 1326 .
YE Q , ZOU L , LU M , et al , 2025 . Pyrometallurgical extraction of titanium from titanium-bearing blast furnace slag: Recently development and prospect [J]. Miner Eng , 234 : 109734 .
ZOU J , LIU Z , GUO Q , 2023 . Comprehensive utilisation of blast furnace slag [J]. Can Metall Q , 63 ( 3 ): 927 - 934 .
0
浏览量
0
下载量
0
CSCD
关联资源
相关文章
相关作者
相关机构
京公网安备11010802024621
