Study on the continuum formation pathway and formation mechanism of slag phase in cohesive zone

XY Fan and YN Huang and SC Gao and JL Zhang and KX Jiao, CHEMICAL PHYSICS LETTERS, 833, 140961 (2023).

DOI: 10.1016/j.cplett.2023.140961

Several methods are conducted to reveal the formation mechanism of slag phase in cohesive zone. The notable diffusion capacity of CaO to 2FeO center dot SiO2 and FeO to 2CaO center dot SiO2 determines different pathway of initial slag formation in pellet and sinter, respectively. The less destructive effect of Al2O3 on the original system makes FeOCaO-Al2O3-SiO2 the dominant slag system in cohesive zone. Poor diffusion of MgO into 2FeO center dot SiO2 and 2CaO center dot SiO2 systems results in a low MgO content in cohesive zone slag. The formation process of interfacial slag is further subdivided into formation interaction and component interaction according to the formation pathway.

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