magnesia calcium brick

Magnesia iron spinel brick is a new generation of alkaline refractory with more technical content. It is mainly used in the firing zone of large dry process cement kiln. The microstructural characteristics of magnesia-aluminum spinel are relatively complex, mainly a combination of magnesia microstructure and iron-aluminum spinel microstructure. The interface between magnesia and iron-aluminum spinel is formed by Mg2+, Al3+, Fe2+ ions. The mutual diffusion and close combination realize the direct combination of materials.