METHOD FOR REALISING THE VORTEX GRINDING OF A MATERIAL AND GAS-DYNAMICS DEVICE FOR GRINDING SAID MATERIAL
1. A method for the vortex grinding of a bulk material, comprising injecting an energy-carrier into a grinding chamber at an angle to the axis of the grinding zone forming a high-speed vortex, introducing a starting material by feeding it into the vortex flow and removing the ground material togethe...
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Zusammenfassung: | 1. A method for the vortex grinding of a bulk material, comprising injecting an energy-carrier into a grinding chamber at an angle to the axis of the grinding zone forming a high-speed vortex, introducing a starting material by feeding it into the vortex flow and removing the ground material together with the energy-carrier, characterized in that the high-speed vortex is formed inside as a toroidal vortex with mainly spiral flow lines starting at a tore axis and ending at its axial circumference, the chamber is formed by two preferably toroidal surfaces having a common center and symmetry axis: by the outer surface in which the radius of the toroidal circumference is equal to the radius of the axial tore circumference tapered in the central zone from the side of the equatorial plane between the tore center and the plane perpendicular to its axis forming an orifice, and the inner surface having partially permeable borders in which the radius of the toroidal circumference is less than the radius of the tore-forming circumference of the outer surface, and radii of their axial circumferences are almost equal, injecting high-pressure profiled flow of the energy-carrier together with the starting material inside the chamber along its axis to the center and removing the ground material together with the gas connecting said chamber via the inner toroidal surface with the outer atmosphere. 2. The method according to claim 1, characterized in that a second flow is formed opposite to the main flow of the energy-carrier symmetrically relative to the equatorial plane and determining the balance of the energy-carrier consumption so as not to disturb the main vortex flow and the starting material is fed into the chamber together with both inlet flows of the energy-carrier or only with one of them. 3. The method according to claim 1, characterized in that a coagulation of the finest size fractions of the material - starting and being on the intermediate stage of grinding - is performed in the central part of the toroidal chamber in the vicinity of its axis. 4. The method according to claim 1, characterized in that a laminar structure of the material distribution is destroyed in the central part of the grinding chamber in the vicinity of its axis. 5. The method according to claim 1, characterized in that a zone of a periodic change of an energy-carrier/starting material density is created in the central zone of the grinding chamber in the vicinity of its axis. 6. The metho |
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