TiO_2质量分数对中钛型烧结矿质量影响的研究

Study of the Effect of TiO_2 Content on the Quality of Vanadium-Titanium in Sinter

通过烧结杯试验，研究不同TiO 2 质量分数对中钛型烧结矿质量的影响。研究表明烧结矿TiO 2 质量分数 在2.8%～4.4%，随着TiO 2 质量分数增加，烧结矿转鼓指数、成品率、还原性和低温还原粉化指数均降低;钛磁铁 矿质量分数增加，易还原的含铁矿物相钛赤铁矿、铁酸钙减少;烧结矿的气孔率增加，强度较好的交织熔蚀结构减 少，骸晶状钛赤铁矿质量分数增加，性脆且不具有黏结作用的钙钛矿质量分数增加，其晶粒变大填充于交织熔蚀结 构，这是烧结矿质量下降的主要原因。

The different content of TiO 2 of affecting titanium sinter quality was studied by sintering cup test. Re-search shows that in the content range of TiO 2 is 2.8%～4.4%, as the TiO 2 content increased, the sinter drum in-dex, yield reduction, reducing and low temperature reduction degradation index are reduced. The easy reduction of iron-bearing minerals phase titanium hematite, iron acid calcium, strength good mixed corrosion structure reduced with the content increasing of titanium magnetite; the sinter porosity increased, skeleton crystalline titanium hema- tite content increased, sex brittle and do not have bonding effect of perovskite content increase its grain change, fill in the mixed corrosion structure, which is the main reason for the decline in the quality of the sinter.