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Impedance studies of the adsorption of hydrophobic and hydrophylic species on mineral pulps

✍ Scribed by J. Bessière; M. Khayar; A. Etahiri

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
357 KB
Volume
305
Category
Article
ISSN
0003-2670

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✦ Synopsis

Physical adsorption of dodecylamine on galena (PbS) and on fluorite (CaF,) does not change the dielectric permittivity of pulps at 10 MHz while a chemical adsorption of xanthate on PbS and of oleate on CaF, leads to significant variations. Physical adsorption is observed for hydrophylic species such as nickel hydroxide for PbS and quebracho for CaF, which are used for limiting the flotation of the minerals. Their co-adsorption with xanthate and oleate can be studied by dielectric methods.

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