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为阐述烧结过程熔融机制和成矿机制,明确MgO、Al2O3质量分数对烧结液相生成和矿物组成的影响是至关重要的。利用Factsage软件计算Fe2O3-SiO2-CaO-Al2O3-MgO体系的液相生成,计算氧分压在500Pa时,不同温度,不同MgO、Al2O3质量分数下体系液相生成和液相区分布的影响。通过烧结试验,分析烧结矿的矿相和矿物成分,结合软件计算得出烧结矿中MgO质量分数为2.0%、Al2O3质量分数为3.0%时其液相量、矿相、矿物成分达到最优适合烧结冶炼的标准。
In order to explain the melting mechanism and metallogenic mechanism of sintering process, it is very important to clarify the effect of MgO and Al2O3 content on the liquid phase formation and mineral composition of sinter. The liquid phase formation of Fe2O3-SiO2-CaO-Al2O3-MgO system was calculated by Factsage software. The influence of different partial pressure of MgO and Al2O3 on the liquid-phase distribution and liquid-phase distribution was calculated when the oxygen partial pressure was 500Pa. Through the sintering test, the mineralogical and mineral components of the sinter are analyzed. The calculated results show that when the mass fraction of MgO is 2.0% and the mass fraction of Al2O3 is 3.0% Sintering smelting standards.