1. Proportioning bauxite clinker or industrial alumina in magnesia (sintering or electric melting) to directly generate spinel in the process of green body firing, and the firing temperature is more than 1700 ℃
2. Add pre synthesized spinel powder to magnesia (sintered or fused)
3. High performance magnesia spinel brick can be made by using spinel sand as particle and magnesia as fine powder
The main advantages of spinel brick are strong corrosion resistance to reducing atmosphere, free CO2, SO2 and K2O / Na2O, as well as good thermal shock stability and wear resistance. It has been successfully used in large-scale cement kiln, external refining furnace, ladle, converter, etc.
