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Fundamentals of the Reduction of SFC in CO/CO2 Gas at 1000°C

机译：在1000°C的CO / CO 2 气体中减少SFC的基础

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SFC (Sillico-Ferrite of Calcium) is a kind of simplified SFCA (Sillico-Ferrite of Calcium and Aluminum) with no Al_(2)O_(3). SFC and SFCA are believed to be the most desirable bonding phase in sinter. In order to better understand the fundamentals of the reduction of SFC, a series of experiments on the SFC reduction were carried out in the present work, including phase equilibria tested by XRD, morphology tested by SEM-EDS, and reduction pathway under the different CO/CO_(2) mixture gas at 1000°C. The experimental results indicated, (1) in the case of CO = 20% and 40%, most of Fe_(2)O_(3) in SFC was reduced to FeO. The equilibrium phases were FeO, CaO·Fe_(2)O_(3), and CaO·SiO_(2). (2) In the case of CO = 60%, CaO·Fe_(2)O_(3) was reduced to generate FeO and 2CaO·Fe_(2)O_(3). The equilibrium phases were FeO, 2CaO·Fe_(2)O_(3), and CaO·SiO_(2). (3) In the case of CO = 80% and 90%, FeO was reduced to Fe, and 2CaO·Fe_(2)O_(3) was reduced to generate Fe and CaO. The equilibrium phases were Fe, CaO, and CaO·SiO_(2). The findings from this work may provide guidelines for the improvement of sintering production and blast furnace performances.
机译：SFC（Sillico-铁素体的钙）是一种简化的SFCA（Sillico-铁素体的钙和铝），NO AL_（2）O_（3）。据信SFC和SFCA是烧结中最理想的粘合相。为了更好地理解SFC减少的基本原理，在本作工作中进行了一系列关于SFC还原的实验，包括通过XRD测试的相平衡，SEM-EDS测试的形态，不同的CO下的减少途径/ CO_（2）在1000℃下的混合物气体。所示的实验结果（1）在CO = 20％和40％的情况下，SFC中的大部分Fe_（2）O_（3）降至Feo。平衡阶段是Feo，CaO·Fe_（2）O_（3）和CaO·SiO_（2）。 （2）在CO = 60％的情况下，CaO·Fe_（2）O_（3）减少以产生Feo和2cao·fe_（2）O_（3）。平衡阶段是Feo，2caO·Fe_（2）O_（3）和CaO·SiO_（2）。 （3）在CO = 80％和90％的情况下，将Feo降至Fe，2caO·Fe_（2）O_（3）减少以产生Fe和CaO。平衡阶段是Fe，CaO和CaO·SiO_（2）。这项工作的调查结果可以为改善烧结生产和高炉表演提供指导方针。

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