"Jun" brand fused aluminum-magnesium spinel is smelted from high-purity magnesium powder and industrial alumina powder in a large high-temperature electric arc furnace. It has the characteristics of high density, good appearance and color, strong corrosion resistance, and good thermal shock stability. It is widely used in refractory products such as steel-making electric furnace tops, converters and ladles, large cement rotary kiln transition belts and glass regenerators.