About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
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Symposium
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Characterization of Minerals, Metals and Materials 2025: In-Situ Characterization Techniques
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Presentation Title |
The effect of low temperature atmospheric discharge plasma on the physical-chemical and technological properties of iron sulfide minerals |
Author(s) |
Igor Zhanovich Bunin, Irina A. Khabarova |
On-Site Speaker (Planned) |
Igor Zhanovich Bunin |
Abstract Scope |
Using the methods of microscopy (SEM-EDX), FTIR, potentiometric titration, Hammett's method of adsorption of acid-base indicators, and flotation experiments, we studied the mechanism of the influence of low temperature atmospheric discharge plasma of a dielectric barrier discharge (LTP-DBD) and high-power nanosecond electromagnetic pulses (HPEMP) on the surface morphology, physicochemical, and technological properties of natural iron sulfide minerals (arsenopyrite, pyrite and pyrrhotite). At pH 9.7–12, the greatest changes in the pyrrhotite electrode potential were found for the mode of short-term (t(treat)=10s) plasma treatment: a potential shift towards negative values (E=–60 mV) was observed, which predetermines the effect of reducing the sorption and flotation activity of pyrrhotite. Rational conditions were determined for short-term (t(treat)=30–40s) plasma pretreatment of sulfide minerals, in which the efficiency of pyrite and arsenopyrite separation in monomineral flotation increased considerably: an increase in pyrite recovery was 27% while the yield of arsenopyrite decreased by 10–12%. |
Proceedings Inclusion? |
Planned: |
Keywords |
Extraction and Processing, Characterization, Process Technology |