PURPOSE: To produce the granular lump of light metal without any burr, uniform in size and which is not retained in a dispenser, etc.

CONSTITUTION: A molten light metal B in a dispenser 1 is allowed to flow down on the upper surface of a rotary drum 2 having a rotation axis horizontal to the ground surface and successively poured into many recesses 2a formed over the entire peripheral surface 2b of the drum 2 while preventing contact with air. The drum 2 is rotated, the molten light metal B in the recess 2a is cooled so that the melt is not spilled, transported to the lower part of the drum and solidified, and the solidified granular lump Ba is dropped from the lower part of the drum.