The effects of slurry pH and stirring time on adsorption rate of chelating collectors containing benzene, namely cupferron and neocupferron, onto rutile surface were researched. Adsorption kinetics, quantum chemistry and stereochemistry were studies. The results showed that the maximum adsorption capacity of neocupferron on rutile was higher than that of cupferron, but the adsorption rate was in the reverse order. The pseudo-first order kinetic equation can fit the adsorption isotherms well for both reagents. The diffusion of activity sites in mineral surface film was the rate-limited step during the adsorption. The number of benzene ring in the molecule can affect the electron cloud density on the bonding atoms and the molecular structure, and then influence the adsorption capacity and rate of the reagents.
Mingbao LIU Bo YU Wanzhong YIN
. Effects of Slurry pH on Adsorption Rate of Chelating Collectors Containing Benzene Ring onto Rutile Surface[J]. The Chinese Journal of Process Engineering, 2018
, 18(2)
: 399
-404
.
DOI: 10.12034/j.issn.1009-606X.217319
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