| 摘要 |
<p>A process for recovering vanadium values from vanadium-containing slags comprises forming a charge consisting of a mixture comprising 10 to 40% by weight of soda and 90 to 60% by weight of a vanadium-containing slag which comprises, by weight: calcium oxide 3 to 40% magnesium oxide 2 to 15% vanadium oxide 14 to 30% silica 12 to 32% the balance being oxides of one or more of Fe, Cr, Mn, Ti, Al and P, and the molar ratio of silica to the sum of the calcium oxide and the magnesium oxide being from 0.75 to 0.85, calcining the charge in an oxidising atmosphere, leaching the calcined charge, separating the resulting solution from the solids and recovering vanadium values from the solution.</p> |
