关键词: 氧化镁;铝酸钙盐;固溶性;固溶量

Abstract: The formation of magnesium oxide(MgO)in cement clinker has a direct influence on its stability,so it's important to know the solid solubility of magnesium oxidein in the clinker mineral.The solid solubility of MgO in calcium aluminate by replacing the content of calciumoxide with 0.5 mol and 1 mol MgO was studied,then compared with the blank sample 3CaO+Al2O3.The samples were analysed by X-ray diffraction, lithofacies analysis and SEM-EDS.The result shows MgO effect the content of mineral's production,MgO solid solution more amounts in C12A7than in C3A,and more in it forms crystal than in the automorphic crystal, Mg2+and Al3+have positive relationship.The maximum solid-soluted content of MgO is reached to 9.28% in calcium aluminate,and it can change the contrast color of sample.

Key words: magnesium oxide(MgO);calcium aluminate;solid solubility;solid-soluted content