Method for producing vanadium products by fluidization technique

摘要

A method for producing vanadium products by a fluidization technique is disclosed, wherein the method comprises the following steps:(a) preparing for high-calcium vanadium slags having CaO/V2O5 weight ratio not less than 0.5 but not more than 0.7; (b) roasting the high-calcium vanadium slags in a fluidized bed furnace to obtain roasted clinker (wherein the mean temperature in the fluidized bed furnace is around 850 Deg C to 950 Deg C, and the mean residence time of the vanadium slags in the fluidized bed furnace is 30min-150min); and (c) leaching the roasted clinker in sulfuric acid solution, and further preparing the vanadium products from leach liquor. Another method for producing vanadium products by a fluidization technique is also disclosed, wherein step (a) involves preparing for high-calcium vanadium slags having CaO/V2O5 weight ratio more than 0.7 but not more than 1.4, followed by the steps of roasting, leaching and preparing the vanadium products.