ALLOYING ADDITIVE

An alloying additive of fine metallurgical structure is made by providing a melt of a suitable alloying material, for example an aluminium-based melt containing one or more alloying components for treating an aluminium-based melt for grain refinement, modification, conductivity reduction and/or addition of alloying metal, and applying one or more substantially unatomised streams of the melt to a cooling surface, e.g. the cylindrical exterior surface of a water-cooled rotating metal drum, to produce a splat product, which is then arranged into a dosage form suitable for making measured alloying additions, preferably having first been granulated.