A method of mining and processing seabed sediment

Details A method of mining and processing seabed sediment A method of mining and processing seabed sediment

E - Fixed Constructions

21

C

E21C 45/00 (2006.01)

Patent

CA 2729383

A method and apparatus for mining and processing seabed sediment comprising disturbing sediment at the seabed (3) to form a slurry; transporting the slurry to the surface via a production riser (6) and processing the slurry to dissociate hydrates and remove hydrates from the slurry in gaseous form at the surface. The slurry may also contain sapropel and minerals. If so, the slurry may be split into a mineral rich stream and a sapropel rich stream each of which may be subjected to further treatment.

L'invention porte sur un procédé et sur un appareil pour l'extraction minière et le traitement de sédiment de fond marin, comprenant le fait de remuer un sédiment sur le fond marin (3) de façon à former une boue ; le transport de la boue à la surface à l'aide d'une colonne montante de production (6) et le traitement de la boue pour dissocier les hydrates et retirer les hydrates de la boue sous forme gazeuse à la surface. La boue peut également contenir du sapropèle et des minéraux. Si c'est le cas, la boue peut être séparée en un courant riche en minéraux et un courant riche en sapropèles, chacun d'entre eux pouvant être soumis à un traitement ultérieur.

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