Volkov Anton, Kologrieva Ulyana, Kovalev Anatoly, Wainstein Dmitry, Vakhrushev Vladimir
State Scientific Centre I.P. Bardin Central Research Institute for Ferrous Metallurgy, 23/9 bdg. 2, Radio str., 105005 Moscow, Russia.
Surface Phenomena Researches Group, Staropimenovskiy lane, 6, bdg.1, app. 4, 127006 Moscow, Russia.
Materials (Basel). 2020 Oct 30;13(21):4889. doi: 10.3390/ma13214889.
A big amount of solid wastes or dump sludges is generated after leaching vanadium (V) from a roasted mixture. As the vanadium content in these tailings is comparable to its concentration in traditional vanadium sources such as titanomagnetite ores or a vanadium converter slag, these wastes could be recycled to extract additional vanadium. Therefore, this research was aimed on studies of vanadium-containing sludges resulting from hydrometallurgical production of vanadium pentoxide to find an optimal technology for V extraction. The material composition of industrial and synthetic sludge samples was studied by X-ray fluorescence analysis (XRF), X-ray diffraction (XRD), secondary ions mass spectroscopy (SIMS), and X-ray photoelectron spectroscopy (XPS, ESCA). The paper demonstrates the presence of vanadium in sludges, not only in spinels in 3+ oxidation degree, but also in other compounds containing V and V. It was found that vanadium substitutes a set of elements in minerals except spinel. The dependence between the content of insoluble vanadium compounds and V oxidation degree was determined.
从焙烧混合物中浸出钒（V）后会产生大量固体废物或废渣。由于这些尾矿中的钒含量与钛磁铁矿矿石或钒转炉渣等传统钒源中的钒浓度相当，这些废物可以回收利用以提取更多钒。因此，本研究旨在对五氧化二钒湿法冶金生产过程中产生的含钒污泥进行研究，以找到提取钒的最佳工艺。通过X射线荧光分析（XRF）、X射线衍射（XRD）、二次离子质谱（SIMS）和X射线光电子能谱（XPS，ESCA）对工业污泥和合成污泥样品的物质组成进行了研究。本文证明了污泥中钒的存在，不仅存在于氧化态为3+的尖晶石中，还存在于其他含钒和V的化合物中。研究发现，除尖晶石外，钒还会替代矿物中的一系列元素。确定了不溶性钒化合物含量与钒氧化态之间的关系。
