镁钙砖“粉洞”的分析研究

耐火与石灰 ›› 2023, Vol. 48 ›› Issue (3): 40-42.

镁钙砖“粉洞”的分析研究

（1. 辽宁青花耐火材料股份有限公司，大石桥 115100； 2. 大石桥市内塞特耐材有限公司，大石桥 115100；3. 河北省迁安市市场监督管理局，迁安 064400）

出版日期:2023-06-10 发布日期:2023-06-08

Analysis and research on the “air voids” in magnesium calcium brick

（1. Liaoning Qinghua Refractory Co.，Ltd.，Dashiqiao 115100，China；2. Dashiqiao Nesite Material Co.，Ltd.，Dashiqiao 115100，China； 3. Market Supervision Administration of Qian'an City，Hebei Province，Qian'an 064400，China）

Online:2023-06-10 Published:2023-06-08

摘要/Abstract

摘要： 镁钙砖在生产过程中，因原料质量控制不严，烧结后会在外表面存在孔洞的缺陷，对产品造成极大的损失和资源浪费。本文通过对镁钙砖粉洞系统进行成分检测、XRD 物相分析、SEM 扫描电镜的微观检测，最终确定因镁钙砂原料的 SiO2 和 Al2O3 杂质较高且富集，从而导致 C2S（硅酸二钙）和 C3S（硅酸三钙）的转化，且在硅、铝的富集处形成低熔点的镁蔷薇辉石和高铝的低熔物矿物相。

关键词: 镁钙砖, 粉洞, 镁蔷薇辉石

Abstract: During the production of magnesium calcium bricks，due to lax quality control of raw materials，there may be defects such as air voids left on the surfaces of calcined bricks， causing great products losses and resource waste. In this paper, by means of conducting microscopic detections such as component analysis, XRD phase analysis，and SEM scanning electron microscopy to the air voids in the magnesium calcium bricks，it is found that the excessive content of SiO2 and Al2O3 impurities in the magnesium calcium sand causes the conversion of C2S（dicalcium silicate）and C3S （tricalcium silicate）and the formation of manganolite with low melting point and low melting mineral phase with high aluminum at the enrichment of silicon and aluminum.

Key words: Magnesium calcium bricks, Air voids, Manganolite

中图分类号:

TQ175.713

石艳茹　王建东陈文生 . 镁钙砖“粉洞”的分析研究[J]. 耐火与石灰, 2023, 48(3): 40-42.

Shi YanruWang Jiandong　Chen Wensheng. Analysis and research on the “air voids” in magnesium calcium brick[J]. REFRACTORIES & LIME, 2023, 48(3): 40-42.

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[2]	田超李振蔡玮华. 提高烧成镁钙砖产品性能和合格率的方法研究[J]. 耐火与石灰, 2021, 46(2): 22-25.