高钙电熔镁砂在镁钙砖中的应用

耐火与石灰 ›› 2022, Vol. 47 ›› Issue (1): 32-34.

高钙电熔镁砂在镁钙砖中的应用

历彦平

辽宁中镁高温材料有限公司，营口115100

出版日期:2022-02-10 发布日期:2022-01-30

Application of high-calcium fused magnesia in MgO-CaO brick

Li Yanping

Liaoning Zhongmei High Temperature Material Co.,Ltd., Yingkou 115100, China

Online:2022-02-10 Published:2022-01-30

摘要/Abstract

摘要：

以高钙镁石为原料经电熔炉生产高钙电熔镁砂，以高钙电熔镁砂及镁钙砂为原料，经破碎、筛分、配料、混料等工艺由液压机在2 500 t的压力下压制成镁钙砖砖坯，该砖坯在1 580 ℃的温度下进入隧道窑烧成，得到特种镁钙砖。这种砖体积密度高、常温耐压强度及高温抗折强度高、热震稳定性好、杂质含量低、抗侵蚀性能好、抗冲刷性能力强，抗剥落性能以及抵制熔渣渗透性能均优于现有镁钙砖，在冶炼不锈钢的窑炉中使用寿命提高20%。

关键词: 高钙镁石, 高钙镁砂, 镁钙砖, AOD炉

Abstract:

High-calcium magnesite is used as raw material to produce high-calcium fused magnesia through electric melting furnace.High calcium fused magnesia and MgO-CaO clinker are used as raw materials.After crushing,sieving,batching,mixing and other processes by hydraulic press under pressure of 2 500 t, MgO-CaO green brick is made.Then by firing the green brick at the temperature of 1 580 ℃ in the tunnel kiln,a special MgO-CaO brick is obtained.The fired brick has high volume density,high modulus of rupture and cold crushing strength,good thermal shock stability,low impurity content,good erosion resistance and strong scour resistance.The anti-spalling behavior and anti-slag permeability of MgO-CaO brick are better than the existing ones.The service life of the fired brick in stainless steel kiln is increased by 20%.

Key words:

"> High-calcium magnesite, High-calcium fused magnesia, MgO-CaO brick, AOD furnace

中图分类号:

TQ175.7

历彦平. 高钙电熔镁砂在镁钙砖中的应用[J]. 耐火与石灰, 2022, 47(1): 32-34.

Li Yanping. Application of high-calcium fused magnesia in MgO-CaO brick[J]. REFRACTORIES & LIME, 2022, 47(1): 32-34.

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