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碱度对低钛型钒钛烧结矿的质量有着重要的影响。通过烧结杯试验、矿相分析、扫描电子显微镜(SEM)和能谱(EDS)分析研究碱度对低钛型钒钛磁铁矿烧结成矿过程的影响和元素在烧结过程中的分布及迁移变化规律。结果表明:在烧结过程中同等接触条件下,Ca O优先与Ti O2反应生成钙钛矿,导致烧结矿的液相总含量较少;在碱度为1.9~2.7的范围内,随着碱度的提高,烧结矿中的钙钛矿含量提高,铁酸钙含量先小幅增加后快速升高,硅酸盐含量降低,烧结矿的冶金性能得到改善;元素分布情况为Ti主要赋存于钙钛矿中,V主要赋存于硅酸盐中,Fe主要赋存于磁铁矿和赤铁矿中,Ca、Si在硅酸盐和钙钛矿中的赋存量最多,随着碱度的提高,铁酸钙中Al、Mg含量增加,而在其他矿物中Al、Mg含量降低。
Alkalinity has a significant impact on the quality of low-titanium vanadium-titanium sinter. The effects of basicity on the sintering and mineralization process of low-Ti vanadium-titanium magnetite and the distribution and migration of elements during sintering were studied by means of sintering cup test, mineralogical analysis, scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) The law of change. The results show that CaO preferentially reacts with Ti O2 to form perovskite under the same contact conditions during sintering, resulting in less total liquid phase of sinter. In the range of basicity of 1.9-2.7, , The content of perovskite in sinter increased, the content of calcium ferrite increased rapidly at a slight increase, the content of silicate decreased, and the metallurgical properties of sinter were improved. The elemental distribution of Ti mainly existed in calcium-titanium In ore, V mainly occurs in silicate, Fe mainly in magnetite and hematite, and Ca and Si are the most abundant in silicate and perovskite. With the increase of alkalinity Increase, Al, Mg content in calcium ferrite increased, while in other minerals Al, Mg content decreased.