Z.Z. Guo
,
T.P. Lou
,
L. Zhang
,
L.N. Zhang
,
Z.T. Sui
金属学报(英文版)
The effects of transformation of slag composition and additive agents on the morphology, the precipitation behavior, the crystal growth, and the volume fraction (VF) of perovskite (CaO·TiO2)crystal in the Ti-bearing blast furnace slags were investigated.
As the morphology of perovskite is dispersed in molten slags, the crystal growth mechanism of the melting of fine dendrites and the
coarsening of large grains exist throughout the solidification of molten slags. With the increase of CaO and Fe2O3 content, VF of
perovskite obviously increases. However, high basicity leads to the viscosity of slag, which results in the reduction of the
average equivalent diameter (AED). The experimental results showed that the presence of the additives CaF2 and MnO efficiently
decreased the viscosity of the slags, and obviously improved the morphology of perovskite and promoted its growth.
关键词:
perovskite phase
,
null
