Effect of Ferrite Phase on Formation of Ferroaluminate Cement Clinker

Abstract

Abstract: Ferrite phase solid solution(hereinafter ferrite phase)is an important mineral in ferroaluminate cement clinker, but its effect on the sintering and properties of ferroaluminate cement clinker is not completely clear. The formation of ferroaluminate cement clinker with different ferrite phase content was studied by comprehensive thermal analysis, burnability analysis, X-ray diffraction and petrographic analysis methods. The results show that the increase of ferrite phase content has no significant effect on the endothermic and exothermic reaction temperature during the formation process of ferroaluminate cement clinker, but it makes liquid phase content increase obviously during the sintering process of clinker. The increasing of ferrite phase content has a hindering effect on the formation of C₄A₃$\bar{S}$ during the formation process of ferroaluminate cement clinker, but it promotes the sintering of clinker and the growth of clinker mineral crystals. In the formation process of ferroaluminate cement clinker, the transition minerals C₅S₂$\bar{S}$ disappear completely when the calcination temperature up to 1 250 ℃. When the calcination temperature up to 1 350 ℃, a large amount of C₄A₃$\bar{S}$ will decompose. The suitable sintering temperature range is 1 250~1 350 ℃.

Key words: ferroaluminate cement, ferrite phase, endothermic and exothermic, C₄A₃$\bar{S}$, burning temperature range

CLC Number:

TQ172.1

WANG Zhiyong, WU Shengguo, QI Dongyou, ZHENG Jing, ZHANG Yu, WANG Xiaoke. Effect of Ferrite Phase on Formation of Ferroaluminate Cement Clinker[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(5): 1561-1568.

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