| 摘要 |
<p>A process for the recovery of aluminum and at least one other metal selected from the group consisting of molybdenum, nickel and cobalt from a spent hydrogenation catalyst comprising (1) adding about 1 to 3 parts H2SO4 to each part of spent catalyst in a reaction zone of about 20 DEG to 200 DEG C under sulfide gas pressure between about 1 and about 35 atmospheres, (2) separating the resultant Al2(SO4)3 solution from the sulfide precipitate in the mixture, (3) oxidizing the remaining sulfide precipitate as an aqueous slurry at about 20 DEG to 200 DEG C in an oxygen-containing atmosphere at a pressure between about 1 and about 35 atmospheres, (4) separating the slurry to obtain solid molybdic acid and a sulfate liquor containing said at least one metal, and (5) recovering said at least one metal from the sulfate liquor in marketable form.</p> |
