B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 20/06 (2006.01) C02F 1/28 (2006.01)
Patent
CA 2580739
The invention relates to a process for producing an adsorbent material containing iron oxyhydroxide, wherein an iron oxyhydroxide mass having a moisture content of 5 - 15 % by weight is produced, said mass is granulated by compaction, followed by comminution and sieving of the compacted product to give product granules with grain sizes ranging between 0.5 and 4 mm. The invention is also relates to a granular adsorbent material containing iron oxyhydroxide, the grain size of the granules being between 0.5 and 4 mm, and the bulk density thereof being from 0.8 to 1.5 g/cm3. Said adsorbent material may be used for removing harmful substances, particularly arsenic, from an aqueous solution thereof.
L'invention concerne un procédé permettant de produire un matériau adsorbant contenant de l'oxyhydroxide de fer, dans lequel une masse d'oxyhydroxide de fer présentant un taux d'humidité de 5-15 % en poids est produite. Cette masse est granulée par compaction, puis le produit ainsi compacté est fragmenté et tamisé afin d'obtenir des granules présentant une taille de grains comprise entre 0,5 et 4 mm. L'invention concerne également un matériau adsorbant granulaire contenant de l'oxyhydroxide de fer, la taille de grains des granules étant comprise entre 0,5 and 4 mm et le poids volumique apparent étant compris entre 0,8 et 1,5 g/cm3. Ce matériau adsorbant peut servir à supprimer des substances nocives, notamment de l'arsenic, présentes dans une solution aqueuse dudit matériau.
Gowling Lafleur Henderson Llp
Kemira Oyj
LandOfFree
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