多源固废基高贝利特铁铝酸盐水泥的制备及其性能

doi:10.16552/j.cnki.issn1001-1625.2024.0963

硅酸盐通报 ›› 2025, Vol. 44 ›› Issue (2): 579-589.DOI: 10.16552/j.cnki.issn1001-1625.2024.0963

多源固废基高贝利特铁铝酸盐水泥的制备及其性能

李相国^1,2, 龚志雄¹, 马伟男¹, 李树国¹, 张呈山³, 但建明^2,3, 吕阳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.石河子大学,化学化工学院,化工绿色过程省部共建国家重点实验室培育基地,石河子 832003;
3.新疆隆泰达环保建材科技发展有限公司,五家渠 831300

收稿日期:2024-08-19 修订日期:2024-09-17 出版日期:2025-02-15 发布日期:2025-02-28
通信作者: 吕阳,博士,特任研究员。E-mail:yang.lv@whut.edu.cn
作者简介:李相国(1976—),男,博士,研究员。主要从事建筑节能材料方面的研究。E-mail:lxggroup@163.com
基金资助:
兵团重点科技攻关计划(2023AB013-03);八师石河子市科技计划项目(2022GY01)

Preparation and Properties of Multi-Source Solid Waste-Based High Belite Ferroaluminate Cement

LI Xiangguo^1,2, GONG Zhixiong¹, MA Weinan¹, LI Shuguo¹, ZHANG Chengshan³, DAN Jianming^2,3, LYU Yang¹

1. State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China;
2. State Key Laboratory Cultivation Base of Chemical Green Process, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China;
3. Xinjiang Longtaida Environmental Protection Building Materials Technology Development Co., Ltd., Wujiaqu 831300, China

Received:2024-08-19 Revised:2024-09-17 Published:2025-02-15 Online:2025-02-28

摘要/Abstract

摘要： 以电石渣、钢渣、脱硫石膏和粉煤灰为主要原料,以铝矾土为校正原料,制备高贝利特铁铝酸盐水泥(HBFAC)。通过综合热分析(TGA)、易烧性分析、X射线衍射(XRD)分析、水化热分析、扫描电子显微镜(SEM)及物理力学性能测试,系统研究了不同贝利特含量的固废基HBFAC熟料的烧成性能与水化行为。研究结果表明,固废基HBFAC熟料的形成温度区间为1 220~1 340 ℃,最佳煅烧温度为1 300 ℃,烧成温度比传统硫铝酸盐水泥(SAC)熟料低25~100 ℃,最佳保温时间为30 min。在最佳煅烧工艺下,固废基HBFAC熟料的晶体发育较好,分布均匀,且凝结时间相比SAC延缓20~30 min。制备的固废基HBFAC表现出快凝快硬、早期高强、后期强度持续增长及低水化热的特性,其抗压强度优于SAC和普通硅酸盐水泥(OPC)。水化产物主要包括高硫型钙矾石(AFt)、单硫型钙矾石(AFm)、铝凝胶(AH₃)和水化硅铝酸钙(C-A-S-H)。相较于硫铝酸四钙(C₄A₃ $\bar{S}$ ),硅酸二钙(C₂S)的水化较慢,对HBFAC后期强度的增长起到了持续促进作用。

关键词: 多源固废, 高贝利特铁铝酸盐水泥, 烧成制度, 力学性能, 水化性能

Abstract: This study utilized carbide slag, steel slag, desulfurization gypsum, and fly ash as primary raw materials, with bauxite as the corrective material, to synthesize high belite ferroaluminate cement (HBFAC). A comprehensive analysis including thermogravimetric analysis (TGA), burnability analysis, X-ray diffraction (XRD) analysis, heat of hydration analysis, scanning electron microscopy (SEM), and mechanical property tests was conducted to systematically investigate the sintering performance and hydration behavior of solid waste-based HBFAC clinker with varying belite content. The results show that the mineral formation temperature range of solid waste-based HBFAC clinker is between 1 220 ℃ and 1 340 ℃, with an optimal calcination temperature of 1 300 ℃, which is 25 ℃ to 100 ℃ lower than that of conventional sulfoaluminate cement (SAC) clinker. The optimal holding time is 30 min. Under optimal calcination conditions, solid waste-based HBFAC clinker exhibits well-developed and uniformly distributed crystals, with a setting time delayed by approximately 20~30 min compared to SAC. The solid waste-based HBFAC exhibits characteristics of rapid setting and hardening, early high strength, sustained strength growth at later stages, and low heat of hydration. Its compressive strength is superior to that of SAC and ordinary Portland cement (OPC). The main hydration products include ettringite (AFt), monosulfate (AFm), aluminum hydroxide gel (AH₃), and hydrated calcium aluminosilicate (C-A-S-H). Compared to tetracalcium aluminate sulfate (C₄A₃ $\bar{S}$ ), dicalcium silicate (C₂S) hydrates more slowly, contributing to the continued strength development of HBFAC in the later stage.

Key words: multi-source solid waste, high belite ferroaluminate cement, firing system, mechanical property, hydration property

中图分类号:

TQ172

李相国, 龚志雄, 马伟男, 李树国, 张呈山, 但建明, 吕阳. 多源固废基高贝利特铁铝酸盐水泥的制备及其性能[J]. 硅酸盐通报, 2025, 44(2): 579-589.

LI Xiangguo, GONG Zhixiong, MA Weinan, LI Shuguo, ZHANG Chengshan, DAN Jianming, LYU Yang. Preparation and Properties of Multi-Source Solid Waste-Based High Belite Ferroaluminate Cement[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2025, 44(2): 579-589.

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多源固废基高贝利特铁铝酸盐水泥的制备及其性能

Preparation and Properties of Multi-Source Solid Waste-Based High Belite Ferroaluminate Cement

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