Recovering brass from skimmings - using a flux cover to which is added an elemental reductant

摘要

Skimmings contg. metallic brass (e.g. from a brass melting furnace) are heated to slightly above the melting point of the metallic content in the presence of a flux agent contg. B oxide (e.g. formed from Rasorite concentrates) and Na2CO3 which gives a slag blanket to which is added at least one of Ca, al, Si, Mn and Ti which reduces oxides in the slag and thus lower the viscosity thereof whereby the amount of brass which coalesces into droplets which settle from the slag. is increased.