FORFARANDE FOR KONTINUERLIG BEREDNING AV EN HOMOGEN BLANDNING AV EN SMELT-FAST METALLKOMPOSITION

摘要

A process is provided for continuously forming a homogeneous mixture of a liquid-solid metal composition, wherein said solid comprises discrete degenerate dendrites or nodules, from a first metal composition which, when frozen from its liquid state without agitation forms a dendritic structure. The first metal composition is maintained molten in a first zone and then is passed into at least one agitation zone connected to said first zone. The first zone and agitation zone are sealed to prevent entrainment of gas into said agitation zone. In the agitation zone, the metal is vigorously agitated and cooled to solidify a portion thereof and to form primary solids comprising discrete degenerate dendrites or nodules while preventing the formation of interconnected dendritic networks. The primary solids comprise up to about 65 weight percent of the liquid-solid metal composition. The liquid-solid metal composition is removed from the agitation zone at about the same rate that the melted first metal composition is passed into said agitation zone. The metal removed from the agitation zone then can be cast.