Influence of nucleating agent on the formation of C4A3S

The reference test methods are carried out parallelly, by means of chemical analysis, X-ray diffraction, differential scanning calorimetry-thermogravimetry, scanning electron microscopy and polarized optical microscope to study the formation of C₄A₃S in the presence and absence of nucleating agent. The results show that nucleating agent with high calcium and low heat consumption as tricalcium silicate (C₃S) promotes the formation of C₄A₃S and increases desulfurization degree obviously. During calcining raw meals doped with C₃S, the grain sizes of C₄A₃S are larger compared with that without C₃S. And at the same calcining level, the mass loss and the heat consumption belonged to CaCO₃ decomposition is reduced.