Abstract:

This paper compares the properties of magnesia-dolomite system refractories with different contents of CaO.It is concluded that with the increase of CaO content in samples,the hydration resistance reduces gradually,when the CaO content is below 20%,the samples have good hydration resistance,when the CaO content reaches 56.9%,the hydration resistance drops evidently,and the samples will not be used any more.