Tynnu Vanadium amhureddau mewn Titanium Tiwbiau

Y berwi pwynt gwahaniaeth a perthynas anwadalrwydd o titaniwm tiwbiau a vanadium amhureddau yn yn yn gymharol bach. Ar gyfer enghraifft, y berwi pwynt pwynt gwahaniaeth rhwng y cydrannau tiwb VOCl3 cyfres is gradd , a y perthynas anwadalrwydd d=1.22% 3b tra y TC4 titaniwm aloi tiwb-VCl4 cyfres dwy cydrannau Y berwi pwynt gwahaniaeth yn 14 graddau Celsius. Nonetheless, mae'n yn ddamcaniaethol bosibl i defnyddio dulliau corfforol i tynnu vanadium amhureddau, fel defnyddio uchel-effeithlonrwydd distyllu colofnau i tynnu fanadium. Y mantais o hwn dull yw hynny mae'n nid angen y defnydd o cemegol adweithyddion, y mireinio proses yn parhaus a hawdd i automate, a y y gwahanu VOCl3 a VCl4 can yn defnyddio uniongyrchol. Mae'r anfanteision yn ynni mawr defnydd , mawr offer buddsoddiad% 2c a y angen i datrys y strwythur o A uchel-pŵer tegell, sydd nid eto wedi wedi cymhwyso mewn diwydiant.

In addition, the freezing points of the two components of the TC4 titanium alloy tube-V0Cl3 series are quite different, about 54 degrees Celsius. Therefore, the freezing crystallization method can also be used to remove VOCI3. However, freezing consumes a lot of energy, so it has not been industrially applied. For this reason, chemical methods are often used to remove vanadium. Chemical vanadium removal is to add a chemical reagent to the titanium tube to selectively reduce or precipitate the VOCl3 (or VCl4) impurity to form an insoluble alum compound that interacts with the TC4 titanium alloy tube. The separation is either selective adsorption of VoCl3 (or VCl4) to separate vanadium impurities and TC4 titanium alloy tubes from each other; or selective dissolution of VOCl2 to separate alum impurities and 7icld from each other. It can be said that a more ideal vanadium removal process with simple, long-lasting, low-cost process equipment, good working conditions, and easy implementation of continuous operations has not yet been established. This is also a topic that needs to be studied in the refining process of TC4 titanium alloy tube.