Is magnesia-alumina spinel ceramics conductive?

conduct electricity. Magnesium and aluminum are metal substances, and metal substances are the easiest to conduct electricity, so ceramics mixed with magnesium and aluminum also have conductivity. The main component of spinel brick is magnesia-alumina or alumina-magnesia spinel, that is, MGO and Al2O3 are the main components, and the main crystal phases are periclase and magnesia-alumina spinel, which belongs to magnesia-alumina brick. The raw materials of spinel brick in firing process are high-purity sintered magnesia and high-temperature sintered spinel sand with alumina content greater than 65%. The theoretical composition of spinel sand is Al2O371.68% and MgO28.32%.