摘要:
以转底炉工艺为基础,在实验室模拟条件下,进行了钒钛磁铁矿含碳球团直接还原高温焙烧试验。通过XRD分析,讨论了配碳量（wC/wO）、还原温度、还原时间对球团金属化率和残碳量的影响。结果表明:随着还原温度的升高金属化率不断升高,而残碳量不断降低;在1 350℃之前,随着温度的升高,金属化率迅速升高,然后趋于平缓;当还原温度为1 350℃时,金属化率可达90%以上,随着还原时间的增加,球团的金属化率呈现先升高后降低的趋势,残碳量逐渐降低,还原时间为30 min时,球团的金属化率达到最大（91.37%）;随着配碳量（wC/wO）的增加,球团还原速率加快,球团还原充分,球团的金属化率升高,当wC/wO为1.3时达到最大（94.28%）。
Abstract:
On the basis of RHF technology,high-temperature calcination experiments were carried out in the laboratory to directly reduce carbon-containing pellet made of vanadium bearing titaniferous magnetite.Through XRD analysis,the effects of carbon proportion（wC/wO）,reduction temperature and reduction time on metallization rate of pellet and content of carbon residue are discussed in this paper.The results show that: with the increase in reduction temperature,the metallization rate constantly increases while content of carbon residue decreases,and as the temperature rises,the metallization rate increases rapidly before 1 350 ℃ and reaches 90% or above at 1 350 ℃,and then levels off;with the increase in reduction time,the metallization rate of pellet firstly increases and then decreases and the carbon residue is gradually reduced,and when the reduction time is at 30 min,the metallization rate reaches the maximum（91.37%）;with the increase in carbon proportion（wC/wO）,the reduction of pellet is accelerated and metallization rate is improved,and when wC/wO is at 1.3,it reaches the maximum（94.28%）.
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