Flotation of niobite,fersmite,and ilmenorutile

Hao Ren, Gui-lan Song, and Fei-fei Ji School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China

Õª Òª£ºThe flotation of niobite, fersmite, and ilmenorutile was studied using 3 collectors with various concentration and pulp pH. The collecting property of different representative collectors was investigated. Experimental results show that diphosphonic acid is an effective collector for valuable niobium-containing minerals. A flotation recovery of 90.87%-91.7% is obtained with 75 mg/L diphosphonic acid at pH 2-4. The chemical adsorption of diphosphonic acid on these 3 minerals¡¯ surface might lead to the high recovery efficiency of the minerals, which is proved by IR and X-ray photoelectron spectroscopy spectra.

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