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为了探讨综合利用攀枝花钒钛资源的最佳工艺,本文对新的提钒流程:磁铁精矿造球——回转窑还原——电炉熔化分离——分离渣熔融吹氧钠化——水浸提钒——残渣制取钛白中的部分环节进行了系统的研究。目前,对于钒渣的熔融吹氧钠化,国内外还未见成功的报导,因为这一环节是该流程能否实施的关键。所以本文用二次回归旋转设计的方法作了不同条件的试验,并对熔融钠化的热力学作了较详细的估算,并测得了部分氧化物的温度,为纳化机理的深入探讨打下了基础。另外,对试验所用的矿物作了X光粉晶照片、X射线衍射,穆斯普尔光谱、显徵组织照片等检测,以便深入了解矿物的微晶状态及钠化反应机理。
In order to explore the best technology of comprehensive utilization of vanadium and titanium resources in Panzhihua, new vanadium extraction process was proposed in this paper: magnetite concentrate pelletizing - rotary kiln reduction - electric furnace melting separation - separation slag melt blowing sodium oxide - water leaching Vanadium - Residue to obtain part of the titanium dioxide in a systematic study. At present, no successful reports have been reported at home and abroad on the vanadium slagging melting and sodium blowing, since this aspect is the key to whether the process can be implemented. Therefore, this paper makes a test under different conditions by the method of quadratic regression rotation, and makes a detailed estimation of the thermodynamics of molten sodium. The temperature of some oxides has been measured, which lays a foundation for the further discussion on the mechanism of nanocrystallization . In addition, X-ray powder crystallography, X-ray diffraction, Muspur spectroscopy, and microscopic examination of the extrinsic tissue were used for the minerals used in the experiment in order to gain a deeper understanding of the microcrystalline state and the sodium reaction mechanism of minerals.