Improvement of low carbon MgO‐C refractories by MA‐CA2 additives fabricated from metallurgical waste. Issue 6 (10th July 2021)

• Record Type: Journal Article
• Authors: Tang, Shaopeng; Fu, Lvping; Gu, Huazhi; Wang, Ting; Huang, Ao; Wu, Jianfang; Lv, Renxiang
• Is Part Of: International journal of applied ceramic technology. Volume 18:Issue 6(2021)
• Page Start: 2314
• Page End: 2322
• Publication Date: 2021-07-10
• Subjects: low carbon MgO‐C refractories -- MA‐CA2 materials -- slag corrosion -- thermal shock resistance -- waste industrial residue; Ceramics -- Periodicals; Ceramics -- Technological innovations -- Periodicals; 620.1405
• DOI: 10.1111/ijac.13825
• Languages: English
• ISSNs: 1546-542X

Abstract

Abstract: In the present work, MA‐CA2 material was fabricated by adding industrial alumina into industrial waste residue, and its effect on the physical properties, oxidation resistance, slag resistance, and thermal shock resistance when it was added to the composition of a low carbon MgO‐C refractory was discussed in detail. Although the introduction of MA‐CA2 material led to a slight inferior slag corrosion resistance, the volume stability and oxidation resistance of refractories were improved. Moreover, the samples containing MA‐CA2 addition showed significantly lower thermal expansion coefficients and increased thermal shock resistance performance. However, owing to the dissolution of SiO2 impurity into the MA‐CA2 material, an excessive addition of MA‐CA2 material would increase the liquid phase amount in the sample during the heat treatment and slag attack, resulting in a performance degradation. In this study, the best comprehensive performance of the MgO‐C refractory was obtained with 6 wt% MA‐CA2 addition.