Patent ID: 7033414
Filing Date: 2006-04-25
Classification: B22F,C22C

Abstract:
1. A method for producing a tablet formed by atomized prealloy of iron-aluminum powder to be used as aluminum hardener in aluminum bath, the method comprising the steps of obtaining a metallic alloy by melting solid 90% iron and 10% aluminum scraps in an induction furnace; atomizing the melted alloy by transporting the alloy to an intermediate container with an opening for controlling and proportionating a continuous flux and supplying a jet of water under pressure to provide atomization and to produce small droplets that cool in water, solidify and are deposited as a powder; drying the powder; classifying the thusly produced powder and compacting the powder within a range between minimum 70% bigger than 100-mesh and 0.5% maximum bigger than 35-mesh for obtaining tablets containing 90% iron and 10% aluminum; packaging the tablets in a form useful for dissolving in aluminum bath in an industrial process.