Process for the insolubilization and agglomeration of wastes...

C - Chemistry – Metallurgy – 04 – B

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C04B 7/26 (2006.01) B09B 3/00 (2006.01) C02F 11/00 (2006.01) C04B 18/10 (2006.01)

Patent

CA 2012517

Les déchets d'épuration de fumées (DEF), riches en chaux, sont mélangés avec un produit contenant au moins 60 % de silice et/ou alu- mine pour amener le pH à une valeur comprise entre 7 et 11,5 ainsi qu'avec une quantité d'eau comprise entre 15 % et 160 % du poids de déchets et dudit produit. En pratique, le rapport Si02 et/ou A1203 sur Ca0 doit être au moins égal à 0;8. On obtient des compositions solides, pratiquement insolubles dans 1'eau et non polluantes.

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