Formation process and properties of aluminium–chromium slag. Issue 13 (September 2018)

• Record Type: Journal Article
• Authors: Zhao, Pengda; Zhang, Han; Gao, Hongjun; Zhu, Yuqian; Yu, Jun; Fan, Rundong; Zhao, Huizhong
• Is Part Of: Ceramics international. Volume 44:Issue 13(2018)
• Page Start: 15730
• Page End: 15734
• Publication Date: 2018-09
• Subjects: Refractory -- Aluminothermic smelting -- Aluminium–chromium slag -- Thermomechanical characterization; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2018.05.247
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: In order to realize the application of aluminium–chromium slag for economical recycling, its formation process and properties, including the chemical composition and phase composition, physical properties, and microstructure, were studied. The main chemical components of aluminium–chromium slag are Al2 O3 and Cr2 O3 ； Cr, CaO, and MgO, among others, are also present as impurities. The main phase is a solid solution of aluminium and chromium oxides; this possesses high refractoriness, good mechanical properties at high temperature, and relative stability in chemical composition. CaO is the main volatile component; variations in the CaO levels affect the thermal conductivity and high-temperature linear thermal expansion, and thus, the mechanical properties of the slag.