AN IMPROVED PROCESS FOR PREPARATION OF SUPERFINE WHITE ALUMINIUM TRI-HYDROXIDE FROM BAYER PLANT LIQUOR

摘要

An improved process for preparation of superfine white aluminium tri-hydroxide from Bayer plant liquor which comprises agitating the Buyer liquor in a reactor at constant temperature of about 50°C,characterised in that adding 5 to 20 g/l of modifier as A12(S04) 3.18 H2O and 7.5 to 15 g/l of seed having size and specific surface area in the range of 10 to 20 µm and 1 to 1.2 m2/cm3 respectively, to the above said agitated Bayer liquor and stirring the above reaction mixture for a period ranging from 5 to 10 hrs followed by filtration to obtain the desired product