The MgO - CaO clinkers were prepared by light burnt and calcining Yanfeag dolomite ( 〈 0. 088 and 〈 0. 045 mm) , and then were modified via hydration carhonation technology. Th, e synthesis conditions including pa...The MgO - CaO clinkers were prepared by light burnt and calcining Yanfeag dolomite ( 〈 0. 088 and 〈 0. 045 mm) , and then were modified via hydration carhonation technology. Th, e synthesis conditions including particle size of the starting materials, the light burnt and calcining temperatures were optimized. The morphology of the modified clinkers surface was observed via SEM, the growth pattern and crystal morphology of the modifled layer and the hydration resistance of the clinkers u,ere researched. The results show that : (1) the suitable light burnt temperature is 850 ℃ ; (2) the suitable cal- cining temperature is 1 650 ℃; ( 3 ) after hydration carbonation, a dense and uniform CaCO3 layer with a certain thickness is jormed on the surface of the clinkers; prolonging the modtfieation duration can obviously en- hance the hydration resistance of the clinkers; particle size plays an important role in the formation and growth of CaCO3 on the surface.展开更多
文摘The MgO - CaO clinkers were prepared by light burnt and calcining Yanfeag dolomite ( 〈 0. 088 and 〈 0. 045 mm) , and then were modified via hydration carhonation technology. Th, e synthesis conditions including particle size of the starting materials, the light burnt and calcining temperatures were optimized. The morphology of the modified clinkers surface was observed via SEM, the growth pattern and crystal morphology of the modifled layer and the hydration resistance of the clinkers u,ere researched. The results show that : (1) the suitable light burnt temperature is 850 ℃ ; (2) the suitable cal- cining temperature is 1 650 ℃; ( 3 ) after hydration carbonation, a dense and uniform CaCO3 layer with a certain thickness is jormed on the surface of the clinkers; prolonging the modtfieation duration can obviously en- hance the hydration resistance of the clinkers; particle size plays an important role in the formation and growth of CaCO3 on the surface.