Patent ID: 6676890
Filing Date: 2004-01-13
Classification: B01J,B07B,B22F

Abstract:
A device for producing spherical balls comprising:means for feeding, in a fusion vessel, material intended to form the balls, a second vessel communicating with the fusion vessel in order to receive the melted material, means to form, out of the melted material contained in the second vessel, a jet through at least one orifice, vibrating means to transmit vibrations to the orifice, in order to transform the jet into droplets, a cooling tower, arranged at the outlet of the orifice and filled with an inert gas, wherein the droplets, falling by gravity, solidify to form the balls, and means for receiving balls at a lower end of the cooling tower, said device comprising an outlet chamber in the fusion vessel and means for ultrasound stirring of the melted material contained in the outlet chamber before its transfer to the second vessel, the inert gas contained in the cooling tower containing a pre-set quantity of oxygen.