6781097171

F. Durao eta!. / The European Journal of Minerał Processing and Environmental Protection Vol.4, No.3, 1303-0868, 2004, pp. 272-281

V type Raw Clay

Z type Raw Clay

The Chemical reagents used were sulphonate collectors for the iron minerals (Aerofloat® 825 and Aerofloat® 845N, from Cytec) and fuel oil. The acidic environment was provided by sulphuric acid. The operational conditions of the two clay types differed only in the conditioning time: 5min for the V type and lOmin for the Z type (Table 3).

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