Presently, ilmenite concentrates from Odisha Sands Complex at Chhatrapur, India are utilized to produce TiO₂ slag by direct smelting in an electric arc furnace. However, the process involves the consumption of excess electrical energy and difficulty in handling the arc furnace due to frothing effects. A more efficient process of pre-reducing the ilmenite before smelting has been proposed in the present communication. In particular, studies have been undertaken on the reduction process of ilmenite-coke composite pellets. The difference in the reduction behaviour of raw ilmenite and ilmenite-coke composite pellets has been established and compared with that of the pre-oxidized raw pellets. The effects of various processing parameters like temperature, residence time, and reductant percentage on the metallization of composite pellets in a static bed have been investigated. Metallization of about 90% has been achieved at 1250 °C for a reduction period of 360 min with a 4°% coke composition. Furthermore, the reduced pellets have been characterized through chemical analysis, optical microscopy, field emission scanning electron microscopy and X-ray diffraction analysis. The reduction behaviour of composite pellets has also been found better than that of pre-oxidized pellets indicating the former to be more efficient.

目前，印度Chhatrapur的Odisha Sands Complex的钛铁矿精矿用于生产TiO ₂通过在电弧炉中直接冶炼产生炉渣。但是，该方法涉及消耗过多的电能，并且由于起泡作用而难以处理电弧炉。在本说明书中已经提出了在冶炼之前预还原钛铁矿的更有效方法。特别地，已经对钛铁矿-焦炭复合颗粒的还原过程进行了研究。已经建立了钛铁矿原料和钛铁矿-焦炭复合颗粒还原性能的差异，并将其与预氧化的原料颗粒进行了比较。研究了各种工艺参数（如温度，停留时间和还原剂百分比）对静态床中复合颗粒金属化的影响。使用4 %%的焦炭成分，在1250°C下进行了约360分钟的还原，可实现约90％的金属化。此外，已通过化学分析，光学显微镜，场发射扫描电子显微镜和X射线衍射分析表征了还原的颗粒。还发现复合粒料的还原行为比预氧化粒料的还原行为更好，表明前者更有效。