Modified Lignins as Depressor Reagents
for Flotation of Disseminated Copper-Nickel Ores
L. I. TIMOSHENKO1, L. A. OPARINA2, V. G. SAMOYLOV1, S. M. MARKOSYAN1 and B. A. TROFIMOV2
1 Institute of Chemistry and Chemical Technology, Siberian Branch of the Russian Academy of Sciences,
Ul. K. Marksa 42, Krasnoyarsk 660049 (Russia)
2 Favorsky Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences,
Ul. Favorskogo 1, Irkutsk 664033 (Russia)
lit@icct.ru
Keywords: flotation, disseminated ores, depressors, modification of kraft lignin, aminomethylation
Pages: 383–387
Abstract
Results are presented concerning studying the use of modified kraft lignin (sulphate) as a depressor reagent for non-metallic minerals in the flotation of disseminated copper-nickel ores. It was found that the modification of lignin according the Mannich reaction (aminomethylation) is a convenient method to implement and technologically sound recycling of the high-tonnage waste of pulp and paper industry.
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