The dissolution experiments of dross in H2SO4 med- ium were carried out in aflat-bottomed glass reactor, which was placed on a Remi make hot plate cum mag- netic stirrer. During leaching the temperature was main- tained at around 90 LC. A similar system was used for washing of dross with water. As the dissolution reaction is exothermic, the temperature of the leaching medium automatically increases up to 80–85 LC without any input of heat from out side. The hot plate was utilized to main- tain the temperature at 90 ± 2 LC. For each experiment 10 g of dross was taken unless otherwise specified. Each experiment was carried out for 3 h followed by alumina analysis of the leached liquor by conventional EDTA– ZnSO4 method. The leach solution obtained after filtration was subjected to iron removal followed by alu- minium hydroxide precipitation using 10% solution of aqueous ammonia that was added drop wise into the solution using a burette. The product aluminium hydrox- ide was heat treated at various temperatures from 200 to 1100 LC in a muffle furnace to observe the phase transfor- mation and to identify the temperature for g-alumina transformation.