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本文研究了钒钛磁铁精矿硫酸钠添加球团氧化焙烧后的最终物相及其形成过程,硫酸钠在焙烧时的变化及其对球团物相组成和构造的影响,由此探讨解决该球团的还原粉化问题。 实验结果和理论分析表明:添加Na_2SO_4的氧化球团最终主要物相是Fe_2O_3SS和Fe_2O_3·TiO_2,后者在高温下溶于前者中,降温时有一部分从前者中析出,添加剂硫酸钠在800℃以后
In this paper, the final phase and the formation process of vanadium-titanium magnetite concentrate added with sodium sulfate added into pellets were investigated. The changes of sodium sulfate during firing and its influence on the composition and structure of pellets were discussed. Pellet reduction chalking problems. The experimental results and theoretical analysis show that the main phase of the oxide pellets added with Na_2SO_4 is Fe_2O_3SS and Fe_2O_3.TiO_2, the latter is dissolved in the former at high temperature, and some of the precipitates are precipitated from the former when the temperature is lowered. After adding sodium sulfate at 800 ℃