钛精矿流态化氢气还原生产高钛渣技术不仅原料选择范围广、能耗低,而且可实现清洁生产.在冷态试验基础上对钛精矿在高温下先氧化再还原试验进行了探索,研究了温度、还原时间、P( N2 )/P( H2)和粒度对金属Fe还原率的影响.试验结果表明:800 ～ 950℃,随着还原温度的升高,Fe的金属化率有较明显的增加；在同一温度下,Fe的金属化率随时间延长先快速增加而后趋缓；随着粒径的减小,钛精矿的Fe还原率提高较明显；氢气的浓度对钛精矿还原影响至关重要,随着氢气浓度的增加,还原率有着明显的提高.
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