EFFECT OF FERRITE PHASE ON THE FORMATION AND COEXISTENCE OF 3CaO·3Al_2O_3CaSO_4 AND 3CaO·SiO_2 MINERALS

摘要

The effect offerrite on the formation and coexistence of 3CaO center dot 3Al(2)O(3)center dot CaSO4 (C(4)A(3)$) and 3CaO center dot SiO2 (C3S) was investigated in this paper The results indicate that 20 % content of ferrite phase with the composition of C(2)A(0)F(0.5) can facilitate the coexistence of C(4)A(3)$ and C3S solid solutions at 1350 degrees C. There are other trace elements that incorporate into clinker minerals and form solid solutions. In addition, the dark and polygonal C(4)A(3)$ solid solution is not dissolved in liquid phase at 1350 degrees C. It can promote the burnability of the raw mixes and provide a favorable condition for the formation of C3S. However, it has an adverse effect on the coexistence of two clinker minerals with the changing offerrite compositions. This will provide the important basis for the preparation of the calcium sulphoaluminate cement clinker containing C3S.