Abstract: The centrifugal pelletizer proposed in the present invention is applicable for producing pellets from a molten metal, such as magnesium or aluminium. The pelletizer comprises a hollow drive shaft, which is enclosed in a housing and rotates in bearings, and a hollow transmission shaft accommodated in the hollow drive shaft so as to define an annular gap between it and said drive shaft. The bottom end of the transmission shaft is rigidly coupled to the drive shaft. In addition, the transmission shaft features a frictional coupling with the drive shaft provided in the bottom portion thereof. In such a centrifugal pelletizer any contact of the molten metal with the drive shaft is fully obviated, which provides for favorable conditions for operation of both said shaft and the bearings in which it rotates.

Abstract: The plant for producing metallic pellets from a salt-added magnesium or alloys thereof comprises a metal-melting furnace, a centrifugal pelletizer with a perforated bowl and a cylindrical pellet-collecting chamber. A hopper is provided in said cylindrical chamber to divide the latter into two concentric zones open from below, of which one zone is adapted for collecting salvage resulting from the pellet formation process, while the other zone is for pellet collection. Provision of said zones makes it possible to considerably reduce the content of salts in magnesium pellets or in those of alloys thereof, as a great proportion of the salts get into the hopper and is withdrawn from the chamber as process waste, whereas the magnesium pellets settle down in the other zone and are then forwarded for further processing.

Abstract: The invention relates to magnesium-containing mixtures, in the form of granules of a particular shape, made by the introduction of a salt to liquid metal at a temperature of 670.degree.-720.degree.C, heated to a temperature of 670.degree.-730.degree.C, composed of metal chlorides and fluorides not reducible by magnesium, taken separately or in combination, and having an initial crystallization temperature below that of the granulated metal, and a density at the temperature of 670.degree.-730.degree.C equal to 0.95-1.2 of the density of the metal. The molten mixture is atomized by centrifugal force with subsequent cooling of the thus produced discrete particles by air flow. The mixture obtained in producing granules of magnesium or its alloys comprises in weight per cent: 65-97 of granulated magnesium, 0.3-16 of magnesium and alkali metal chlorides, 0.1-10 of one of the fluorides, up to 3 of alkaline-earth metal chlorides, and up to 6 of magnesium oxide.