Additional investigations on the separation of titanoferrous impurities from kaolin by high shear pretreatment and froth flotation - Part II

Using an IKA, KG stirrer (having 8 number of teeth on its rotor and develops a shear frequency of 2667 s− 1), the product titania could be reduced to 0.13% from a feed value of 0.3%. The flotation product measured 84.5% ISO brightness at a clay recovery of 92%. The titania removal is as high as 62.5%. The brightness was further improved to 85.2% by reductive bleaching.