Classifier for granular material
AssigneeMagotteaux International S.A.
InventorXavier Prignon
Life of this patent
Estimating the term…
Abstract
The present invention relates to a dynamic air classifier for the separation of granular and powdery materials into fractions of different grain sizes comprising a rotary cage, wherein: said classifier also comprises a recovery chamber for fine materials with a outlet bottom, said chamber being defined by a casing; said recovery chamber is coaxially arranged in the protrusion of the rotary cage so as to be able to use the vortex created by the rotary cage for cycloning said material; said recovery chamber comprises openings in the casing allowing the passage of the centrifuged material towards ducts for collecting the material located outside the chamber.
Claims15
Dynamic air classifier for the separation of granular and powdery materials into fractions of different grain sizes comprising a rotary cage (1), wherein:
- said classifier also comprises a recovery chamber (2) for fine materials with a outlet bottom, said chamber (2) being defmed by a casing (5);
- said recovery chamber (2) is coaxially arranged in the protrusion of the rotary cage (1) so as to be able to use the vortex created by the rotary cage for cycloning said material;
- said recovery chamber (2) comprises openings in the casing (5) allowing the passage of the centrifuged material towards ducts (8) for collecting the material located outside the chamber.
Method of separation according to grain sizes by means of a dynamic air classifier, comprising the following steps:
- feeding the material to be treated (13) to the rotary cage (1);
- sorting between large and fine particles in the rotary cage (1) depending on the rotation velocity and air intake;
- rejecting the large particles towards the refuse chamber (17);
- recovering the fine materials in the recovery chamber (2) positioned coaxially with the rotary cage;
- using the vortex created by the rotary cage and possibly further accelerated by mobile or fixed deflectors (4) for cycloning the fine material;
- separating the dedusted air and the fine particles and extraction of the latter to a means of conveyance.
(canceled)
Dependencies are inferred from the claim text.