不同乳酸盐对MgO水化过程的影响

doi:10.16552/j.cnki.issn1001-1625.2024.1312

硅酸盐通报 ›› 2025, Vol. 44 ›› Issue (6): 2337-2342.DOI: 10.16552/j.cnki.issn1001-1625.2024.1312

不同乳酸盐对MgO水化过程的影响

周晶^1,2, 王周福¹, 刘浩^1,2, 马妍^1,2, 王玺堂¹

1.武汉科技大学省部共建耐火材料与冶金国家重点实验室,武汉 430081;
2.武汉科技大学钢铁工业耐火材料新技术国际合作联合实验室,武汉 430081

收稿日期:2024-11-01 修订日期:2024-12-10 发布日期:2025-06-27
通信作者: 王周福,博士,教授。E-mail:whwangzf@126.com
作者简介:周晶(1999—),女,硕士研究生。主要从事不定形耐火材料的研究。E-mail:1977255385@qq.com
基金资助:
国家自然科学基金(52372031)

Effects of Different Lactates on Hydration Process of MgO

ZHOU Jing^1,2, WANG Zhoufu¹, LIU Hao^1,2, MA Yan^1,2, WANG Xitang¹

1. The State Key Laboratory of Refractories and Metallurgy, Wuhan University ofScience and Technology, Wuhan 430081, China;
2. The State Key Laboratory of Advanced Refractories, Wuhan University of Science and Technology, Wuhan 430081, China

Received:2024-11-01 Revised:2024-12-10 Online:2025-06-27

摘要/Abstract

摘要： 以轻烧MgO为原料,采用乳酸铝、乳酸镁和乳酸钙作为外加剂,制备MgO料浆。通过水化热测试和离子电导率分析,系统表征了MgO的水化过程,并研究了不同乳酸盐对MgO凝结时间、水化产物显微结构和净浆硬化强度的影响。结果表明,乳酸盐显著抑制了MgO前期的水化过程,但对后期水化过程的影响较小。乳酸盐的引入不仅延长了MgO净浆的凝结时间,还提高了MgO净浆的硬化强度,其中引入乳酸铝的试样硬化强度较无外加剂试样提升了24%。乳酸盐对MgO水化产物的微观形貌具有明显影响,引入乳酸铝的试样水化产物呈不规则且比表面积较大的花瓣状结构,引入乳酸镁的试样水化产物则表现为规则且相互交错的花瓣状结构,而引入乳酸钙的试样水化产物呈球形花瓣状结构。

关键词: 轻烧MgO, 乳酸盐, 阳离子, 水化过程, 凝结时间, 显微结构

Abstract: MgO slurry was prepared by using light-burnt MgO as raw material and aluminum lactate, magnesium lactate and calcium lactate as additives. The hydration process of MgO was systematically characterized by hydration heat test and ionic conductivity analysis. The effects of different lactate salts on the setting time, microstructure of hydration products and hardening strength of MgO paste were studied. The results show that lactate significantly inhibits the hydration process of MgO in the early stage, but has little effect on the hydration process in the later stage. The introduction of lactate not only prolongs the setting time of MgO paste, but also improves the hardening strength of MgO paste. The hardening strength of the sample with aluminum lactate is 24% higher than that of the sample without admixture. Lactate has a significant effect on the microscopic morphology of MgO hydration products. The hydration products of the samples with aluminum lactate show irregular petal-like structure with large specific surface area. The hydration products of the samples with magnesium lactate show regular and interlaced petal-like structure, while the hydration products of the samples with calcium lactate show spherical petal-like structure.

Key words: light-burnt MgO, lactate, cation, hydration process, setting time, microstructure

中图分类号:

TQ175

周晶, 王周福, 刘浩, 马妍, 王玺堂. 不同乳酸盐对MgO水化过程的影响[J]. 硅酸盐通报, 2025, 44(6): 2337-2342.

ZHOU Jing, WANG Zhoufu, LIU Hao, MA Yan, WANG Xitang. Effects of Different Lactates on Hydration Process of MgO[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2025, 44(6): 2337-2342.

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不同乳酸盐对MgO水化过程的影响

Effects of Different Lactates on Hydration Process of MgO

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