Doping Effect Of Foreign Anions And Industrial Waste, Mineral Composition Of Calcium-Rich Portland Clinker

As we all know, the goal of studying and producing in cement industry is to improve the performance. The performance is related to the mineral component and microstrucrure. Since C3S is the most important mineral in cement mineral components, we try to find some means to increase the content of C3S as well as the burnability improved.The burnabilities of high alite cements with different IM, SM, LSF are studied in this paper, and the matching relationships of IM, SM, LSF are discussed. The results show that the suitable range of IM is 1.3-1.9, SM, 2.5-2.8, and they vary with each other. Moreover, analyses show that it is easier to control the limit of lime saturation by adjusting LSF than adjusting KH.The effects of F, S and A on the burnability and performance of Alite rich cement clinker were studied in this paper. And the volatility of them was examined. The results show that the effect of A is obvious no mater used singly or complexly. The volatility of A and F is lower than S, they can be used complexly as one kind of high temperature mineralizers.Some industrial waste were added into the row meal to study the effects of them on improving the burnability and performance of cement clinker, such as red mud, phosphorus slag, steel slag and slag. The results show that phosphorus slag can improving the burnability of clinker, and with the content become higher, the effect become more obvious. When phosphorus slag and F were used complexly, the clinker with high LSF, high SM and high IM was experimentally burnet at general industrial temperature. As for red mud, slag and steel slag, the burnability can be improved and strength of clinker can be increased in some way when added at aAbstractproper percentile. The high content of C3S and effects of some foreign ions contribute to the strength of clinker .The solid solutions of some foreign ions into the crystal lattice of C3S can stabilize different polymorph and change the characteristic of liquid phase.Pure C3S were synthesized and C3S solid solutions were prepared in this temperament. Alite were extracted from commercial clinker and experimental clinker. The polymorphs of the C3S solid solutions and Alite were examined by XRD at special 2 6 angles, Alite and matrix in experimental clinker was analyzed by EDS and optical microscope. The results show that C3S solid solutions that contain different concentrations of A or/and F or different compounds show different crystal structure. Pure C3S is Tm crystalloid, the symmetry of C3S solid solution could be improved by adding Al and CaF2 singly. The effect would be remarkable just when the content of CaF2 is higher enough. Different compounds show different effects on the modification of C3S solid solution. There are little effects by adding A2 or A3 solely. The symmetry of C3S solid solution can be improved remarkably by adding Al and CaF3synchronously. A is mostly adopted into Alite in the Alite-rich Portland clinker. When the burning temperature heightened, the concentration in the Alite will decrease slightly and the concentration t in the matrix will increase a little. The extracted Alite from the experimental clinker is an admixture of R and M and the Alite in the commercial clinker is M polymorph. High performance clinker can be gained by controlling the conditions of CS formation compatibly.