Effect of ozone on physico-chemical and flotation properties of surface of pyrrhotite under the nanosecond electromagnetic pulse treatment |
| |
Authors: | V A Chanturia T A Ivanova I A Khabarova M V Ryazantsev |
| |
Affiliation: | (1) Institute of Problems of Complex Development of Bowels, Russian Academy of Sciences, Moscow, Russia |
| |
Abstract: | It is proved by testing that the effect of nanosecond powerful electromagnetic pulses (PEMP) tends to give rise to both pyrrhotite
disintegration and alterations of its particles’ surface chemistry. It is found that PEMP exerts an effect on the surface
composition, floatability, sorption ability and solubilization intensity of pyrrhotite. The non-monotone variation of sulphur
content, removed from pyrrhotite surface under hexane action, and ferrous and ferric sulfates detected in the aqueous phase
of suspension, are found to induce a nonmonotone alteration of sorption and flotation properties of the mineral depending
on the number of pulses. The mode has been established for the preliminary PEMP treatment for pyrrhotite and pentlandite,
aimed at improving the flotation separation as compared to a conventional mode.
__________
Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 1, pp. 91–99, January–February, 2007. |
| |
Keywords: | Powerful electromagnetic pulses sulfide minerals mineral processing flotation hydrophobicity kinetics of solution pyrrhotite ozone oxidation |
本文献已被 SpringerLink 等数据库收录! |
|