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Method for recovering metals from the flying ashes generated in an integrated gasification combined cycle-type (IGCC) thermal station

AuthorsBurgos, Silvia; Querol, Xavier ; Font, Oriol ; López Soler, Ángel ; Plana Llevat, Feliciano ; Espiell, Ferrán; Chimenos, Josep María; Fernández Renna, Ana Inés
Issue Date12-Dec-2002
CitationInternational Publication Number: WO 2002/099145 A1
AbstractThe method involves the following steps: a) leaching said IGCC ashes with an extracting agent selected amongst water, an aqueous solution of an acid and an aqueous solution of a base in order to solubilize all or part of the Ge contained in said IGCC ashes; b) separating the solid and liquid phases in the solution or suspension resulting from step a) into a solid phase (S1) and a liquid phase (L1) which contains the Ge and c) recovering the Ge in said liquid phase (L1). The inventive method makes it possible to upgrade the IGCC ashes by recovering the Ge and, optionally, other valuable metals, e.g. Ga, V and/or Ni.
DescriptionFiling Date: 2002-06-06.-- Priority Data: ES P 0101328 (2001-06-07)
Appears in Collections:(Geo3Bcn) Patentes
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