活性MgO和铝酸钙水泥结合刚玉-尖晶石浇注料性能对比

doi:10.3969/j.issn.1001-1935.2023.06.014

耐火材料 ›› 2023, Vol. 57 ›› Issue (6): 528-530.DOI: 10.3969/j.issn.1001-1935.2023.06.014

活性MgO和铝酸钙水泥结合刚玉-尖晶石浇注料性能对比

赵宗强, 张洪睿, 陈留刚

郑州大学材料科学与工程学院河南省高温功能材料重点实验室河南郑州 450052

收稿日期:2022-10-25 发布日期:2023-12-25
通讯作者: 陈留刚,男,1988年生,博士,副教授。 E-mail:lgchen@zzu.edu.cn
作者简介:赵宗强:男,1997年生,硕士研究生。E-mail:202012192013601@gs.zzu.edu.cn
基金资助:
国家自然科学基金(51802287);河南省优势学科联合基金培育项目(222301420034);郑州市协同创新重大专项(20XTZX12025)。

Properties comparison of reactive MgO and calcium aluminate cement bonded corundum-spinel castables

Zhao Zongqiang, Zhang Hongrui, Chen Liugang

First author's address: Henan Key Laboratory of High Temperature Functional Ceramics,School of Materials Science and Technology,Zhengzhou University,Zhengzhou 450052,Henan,China

Received:2022-10-25 Published:2023-12-25

摘要/Abstract

摘要： 为改善刚玉-尖晶石浇注料的性能,以板状刚玉、活性氧化铝、烧结镁砂细粉为主要原料,分别以活性MgO和铝酸钙水泥(CAC)为结合剂制备了刚玉-尖晶石浇注料,对比了二者对1 600 ℃煅烧3 h后试样的显气孔率、烧后线变化率、常温抗折强度、常温耐压强度和抗CaO-Al₂O₃-Fe₂O₃-SiO₂(CAFS)渣侵蚀性能的影响。结果表明:经1 600 ℃热处理后,与CAC结合的刚玉-尖晶石浇注料相比,活性MgO结合的刚玉-尖晶石浇注料的常温抗折强度和常温耐压强度较低,但其体积稳定性、对CAFS渣的抗侵蚀性和抗渗透性显著提高。

关键词: 活性MgO, 刚玉-尖晶石, 浇注料, 抗侵蚀性, 体积稳定性

Abstract: To improve their properties,corundum-spinel castables were prepared using tabular corundum,reactive alumina and sintered magnesia fines as the main starting materials,reactive magnesia (RM) and calcium aluminate cement (CAC) as the binder,respectively.The apparent porosity,permanent linear change on heating,cold modulus of rupture,cold crushing strength,and corrosion resistance to CaO-Al₂O₃-Fe₂O₃-SiO₂ (CAFS) slag of the two castables fired at 1 600 ℃ for 3 h were compared.The results show that,after heat treatment at 1 600 ℃,compared with the CAC-bonded castables,the RM-bonded castables perform lower cold modulus of rupture and cold crushing strength,but significantly improved volume stability and corrosion and penetration resistance to CAFS slag.

Key words: reactive MgO, corundum-spinel, castables, corrosion resistance, volume stability

中图分类号:

TQ175

赵宗强, 张洪睿, 陈留刚. 活性MgO和铝酸钙水泥结合刚玉-尖晶石浇注料性能对比[J]. 耐火材料, 2023, 57(6): 528-530.

Zhao Zongqiang, Zhang Hongrui, Chen Liugang. Properties comparison of reactive MgO and calcium aluminate cement bonded corundum-spinel castables[J]. Refractories, 2023, 57(6): 528-530.

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活性MgO和铝酸钙水泥结合刚玉-尖晶石浇注料性能对比

Properties comparison of reactive MgO and calcium aluminate cement bonded corundum-spinel castables

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