硅酸盐通报 ›› 2026, Vol. 45 ›› Issue (7): 2347-2356.DOI: 10.16552/j.cnki.issn1001-1625.2026.0031
收稿日期:2026-01-11
修订日期:2026-02-10
出版日期:2026-07-15
发布日期:2026-08-13
通信作者:
贺行洋,博士,教授。E-mail:hexycn@163.com作者简介:金子豪(1993—),男,博士,副教授。主要从事工业副产石膏的研究。E-mail:jzh19930113@163.com
基金资助:
JIN Zihao(
), ZOU Ziyong, HE Xingyang(
), SU Ying, CHEN Shuqin
Received:2026-01-11
Revised:2026-02-10
Published:2026-07-15
Online:2026-08-13
摘要:
面向建材低碳转型及固废资源化利用需求,本文提出采用湿磨碳化钢渣改性低碳磷建筑石膏,构建新型高性能石膏胶凝材料。结果表明,经过碳化处理的钢渣,对磷建筑石膏的工作性能与耐水性能均有明显的改善作用,且可通过增加湿磨碳化时间降低其对力学性能的劣化作用。碳化60 min钢渣的综合效果最优,在保证工作性能与力学性能的同时,使磷建筑石膏耐水性能得到了较大的改善。体系中形成了CaCO3与二水硫酸钙(CaSO4·2H2O)“双晶相”复合结构,对石膏力学性能有一定的负面作用,但起到了保护石膏晶体结构、增加其耐水性能的作用。
中图分类号:
金子豪, 邹自勇, 贺行洋, 苏英, 陈淑琴. 湿磨碳化钢渣对磷建筑石膏性能及微观结构的影响[J]. 硅酸盐通报, 2026, 45(7): 2347-2356.
JIN Zihao, ZOU Ziyong, HE Xingyang, SU Ying, CHEN Shuqin. Effect of Wet Grinding Carbonized Steel Slag on Properties and Microstructure of Beta-Hemihydrate Phosphogypsum[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2026, 45(7): 2347-2356.
| Raw material | Mass fraction/% | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| SiO2 | Al2O3 | Fe2O3 | SO3 | CaO | MgO | P2O5 | F | Loss | |
| β-HPG | 7.56 | 0.51 | 0.18 | 42.40 | 36.48 | 0.02 | 1.04 | 1.22 | 10.49 |
| SS | 13.40 | 6.32 | 16.83 | — | 52.80 | 3.87 | 0.93 | — | 5.85 |
表1 β-HPG和SS的化学组成
Table 1 Chemical composition of β-HPG and SS
| Raw material | Mass fraction/% | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| SiO2 | Al2O3 | Fe2O3 | SO3 | CaO | MgO | P2O5 | F | Loss | |
| β-HPG | 7.56 | 0.51 | 0.18 | 42.40 | 36.48 | 0.02 | 1.04 | 1.22 | 10.49 |
| SS | 13.40 | 6.32 | 16.83 | — | 52.80 | 3.87 | 0.93 | — | 5.85 |
| Setting time/min | Compressive strength/MPa | ||
|---|---|---|---|
| Initial setting | Final setting | 2 h | Dry |
| 3.4 | 8.8 | 4.6 | 10.5 |
表2 β-HPG的物理力学性能
Table 2 Physical and mechanical properties of β-HPG
| Setting time/min | Compressive strength/MPa | ||
|---|---|---|---|
| Initial setting | Final setting | 2 h | Dry |
| 3.4 | 8.8 | 4.6 | 10.5 |
| Carbonization time/h | 0.5 | 1.0 | 3.0 | 5.0 |
|---|---|---|---|---|
| Carbon sequestration rate/% | 14.19 | 17.51 | 16.96 | 18.69 |
表3 不同碳化时间下SS的固碳率
Table 3 Carbon sequestration rate of SS with different carbonization time
| Carbonization time/h | 0.5 | 1.0 | 3.0 | 5.0 |
|---|---|---|---|---|
| Carbon sequestration rate/% | 14.19 | 17.51 | 16.96 | 18.69 |
| Sample | Mass fraction/% | W/B | ||
|---|---|---|---|---|
| β-HPG | SS | PCE | ||
| CSS-T0-20% | 80 | 20 | 0.5 | 0.50 |
| CSS-T30-20% | 80 | 20 | 0.5 | 0.50 |
| CSS-T60-20% | 80 | 20 | 0.5 | 0.50 |
表4 配合比
Table 4 Mix proportion
| Sample | Mass fraction/% | W/B | ||
|---|---|---|---|---|
| β-HPG | SS | PCE | ||
| CSS-T0-20% | 80 | 20 | 0.5 | 0.50 |
| CSS-T30-20% | 80 | 20 | 0.5 | 0.50 |
| CSS-T60-20% | 80 | 20 | 0.5 | 0.50 |
| Sample | Fluidity/mm | Initial setting time/min | Final setting time/min |
|---|---|---|---|
| CSS-T0-20% | 210 | 5 | 17 |
| CSS-T30-20% | 265 | 9 | 15 |
| CSS-T60-20% | 255 | 7 | 14 |
表5 不同碳化程度SS浆料作用下复合体系流动度参数
Table 5 Flowability parameters of composite system of SS slurries with different carbonization degrees
| Sample | Fluidity/mm | Initial setting time/min | Final setting time/min |
|---|---|---|---|
| CSS-T0-20% | 210 | 5 | 17 |
| CSS-T30-20% | 265 | 9 | 15 |
| CSS-T60-20% | 255 | 7 | 14 |
| Sample | Mass loss rate/% | |||
|---|---|---|---|---|
| At 50~200 ℃ | At 400~500 ℃ | At 520~800 ℃ | Total | |
| CSS-T0-20% | 15.75 | 0.06 | 2.51 | 19.13 |
| CSS-T30-20% | 15.25 | 0.16 | 4.38 | 21.51 |
| CSS-T60-20% | 15.05 | 0.29 | 4.29 | 20.93 |
表6 不同碳化程度SS作用下试样的热分析数值
Table 6 Thermal analysis data of samples with SS under different carbonization degrees
| Sample | Mass loss rate/% | |||
|---|---|---|---|---|
| At 50~200 ℃ | At 400~500 ℃ | At 520~800 ℃ | Total | |
| CSS-T0-20% | 15.75 | 0.06 | 2.51 | 19.13 |
| CSS-T30-20% | 15.25 | 0.16 | 4.38 | 21.51 |
| CSS-T60-20% | 15.05 | 0.29 | 4.29 | 20.93 |
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