A method and an apparatus for mixing a propellent gas and a...

B - Operations – Transporting – 01 – F

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B01F 3/04 (2006.01) B01F 5/04 (2006.01) E04F 21/12 (2006.01)

Patent

CA 2374216

The invention relates to a method for mixing a compressed propellent gas and a slurry. The method is characterized in that the slurry is fed into a cavity, that the propellent gas is added to the slurry inside said cavity, that the resulting gas-added slurry is allowed to undergo a first expansion step while it is still inside said cavity, before it is allowed to exit from the cavity, and that it undergoes a second expansion step while exiting from the cavity into the ambient air, whereby it is sprayed onto a desired object. The invention also relates to an apparatus for working the method.

L'invention concerne un procédé permettant de mélanger un gaz de propulsion comprimé et une suspension boueuse. Ce procédé consiste à introduire la suspension boueuse dans une cavité, à ajouter le gaz de propulsion à la suspension boueuse à l'intérieur de la cavité, à faire subir à cette suspension boueuse additionnée de gaz, avant qu'elle ne sorte de la cavité, une première étape d'expansion, enfin à faire subir à cette suspension boueuse une seconde étape d'expansion au moment où elle sort à l'air libre en étant pulvérisée sur un objet voulu. L'invention concerne également un appareil permettant de réaliser ce procédé.

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