Can iron oxide be used as refractory material?
Is widely used in this area. Mentioned refractory material of high school textbooks generally refers to three two aluminum oxide (alumina), alumina is also used as a refractory material, refractory crucible, porcelain, artificial gemstones.
Iron oxide can not be used as refractory material, but it can be used as refractory additive. Iron oxide can be used as pigment