Method for detoxication of combustion residues by removing...

C - Chemistry – Metallurgy – 22 – B

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C22B 7/04 (2006.01) C22B 3/04 (2006.01) C22B 3/10 (2006.01)

Patent

CA 2114137

2114137 9325716 L'invention concerne un procédé de stabilisation de scories par extraction des fractions métalliques solubilisables. Il comporte la réalisation de lixiviations de ces scories avec une solution aqueuse de lixiviation, contenant des éléments échangeables sous forme de chlorures avec les cations de métaux lourds présents dans ces scories. La solution de lixiviation est constituée par une solution d'acide chlorhydrique dilué, pour les scories à caractère basique, ou par une solution de chlorure d'un métal alcalin ou alcalino-terreux, pour les scories à caractère neutre.

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