Recovering metals from spent hydroprocessing catalysts
作者： Dean A. Van Leirsburg , Gale L. Hubred
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摘要: A process for recovering the metal values from spent hydroprocessing catalyst particles. The will include at least one of Group VIII Periodic Table and Vb or VIb Table. particles are first roasted between 400° C. 600° then contacted with a aqueous solution ammonia an ammonium salt forming pregnant liquor. once-leached catalysts second sulfur dioxide precipitated liquor hydrogen sulfide precipitate is unroasted catalysts. in transferred into organic by liquid ion exchange. stripped strip separated sequential precipitation. metals purified serial
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