用含钛高炉渣制备高强度陶瓷材料OACSTPCD

This is an article in the field of mineral materials.In order to explore the large-scale and high-value application of titanium-containing blast furnace slags in the ceramic field,through the design based on CaO-SiO2-MgO(15%)-Al2O3 phase diagram,and the analysis of the physical properties,phase composition and microstructure of the prepared samples,the preparation of high-strength ceramic materials with titanium-containing blast furnace slag was realized.The prepared high-strength ceramics belong to low-silica pyroxene ceramics,and the main phases are pyroxene,albite,perovskite and brookite,in which the amount of pyroxene increases gradually with the increase of sintering temperature,while perovskite comes from raw materials and decreases gradually with the increase of sintering temperature.Ti element after perovskite decomposition is solid-soluble in pyroxene,which can't replace Si,but exists in M1.Ti element is solid-soluble in pyroxene and alkali basalt,which increases the sintering temperature of the sample.The content of titanium-bearing blast furnace slags in the best ceramic sample in this paper is as high as 55%,and its strength can reach 75.51 MPa,which is 35 MPa higher than the standard.The optimum sintering temperature is 1 150℃,which is beneficial to energy-saving production.The feasibility of preparing high-strength ceramic materials with titanium-containing blast furnace slag is demonstrated,which provides a theoretical basis for the application of titanium-containing blast furnace slags in ceramic field.