对攀枝花低品位钛精矿进行了微波还原试验研究.研究了预氧化、配碳量、添加剂等条件对还原钛铁矿中铁金属化率的影响.试验结果表明:在预氧化温度800 ℃、硼砂配比3%、焦粉配比10%、微波还原温度1 000～1 100 ℃条件下,还原60 min,还原产物铁的金属化率超过90%.分析微波强化钛铁矿还原的机理在于:微波热应力在球团内部产生大量孔隙和裂纹促进了还原气氛的扩散,快速还原产生的大量铁晶核加速了还原反应.
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