Disclosed herein is a process for recovery of high grade Alumina by agitating in water of Aluminium Nitride fraction of the non-metallic component of Aluminium dross residue to output alumina and ammonia, among which alumina is used as raw material input for refractory and / or smelters, while ammonia is either flar...

This invention presents a novel, environmentally friendly method to process hazardous aluminum dross into valuable products. The process involves grinding and screening the dross, separating particles less than 1mm for treatment. These particles are preheated and oxidized in a cyclone preheater, converting aluminum...

Disclosed herein is a process for recovery of high grade Alumina by the oxidation, at elevated temperatures, of Aluminium Nitride fraction of the non-metallic component of Aluminium dross residue. Said process is carried out in an electrically-heated continuous tunnel kiln, the output of which is high grade alumina ...

Disclosed herein is a process for subjecting dross or residue of dross to a controlled thermal treatment to thereby obtain valuable products including refractory aggregates made up of Alumina, Aluminum Silicate, Silica, oxides of magnesium, iron, and chrome and furthermore, reduced oxides as a byproduct. ...