Composition of reburning magnesia

The main component of magnesia is magnesium oxide, and the impurities are CaO, SiO2, Fe2O3, etc. The magnesium oxide is an alkaline oxide. The melting point of the calcined magnesia is 2800 degrees. After heating at high temperature, it changes into a stable cubic crystal, commonly known as periclase. It is calcined from magnesium hydroxide at high temperature and has strong hydration resistance.