Speaker
Prof.
Antoine-Floribert MULABA-BAFUBIANDI
(School of Mining, Metallurgy and Chemical Engineering, University of Johannesburg)
Description
Apart their usages in telecommunication Microwaves have been used in minerals and materials processing. The materials in-outer ward heating mechanism is exploited to improve the reaction mechanism as well as the thermodynamics and process efficiency. This paper discusses findings obtained when soil materials were processed with microwaves either in a pre-treatment stage or in a final process stage. Sandtones and slates have been cracked using microwaves. This process was exploited in the artisanal mining of the above mentioned two commodities. Clayey soils have been processed with microwaves. Bacteria strains populations were reduced through microwave irradiation of geophagic clays. Sulphide and oxide ores have been Microwave treated. Partial and full roasting of sulphide ores were observed while oxidation-reduction of metals in their oxide minerals were studied. The physics of the interactions between the microwaves and the mineral phonons will be discussed through their macroscopic evolution and impact.
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Primary author
Prof.
Antoine-Floribert MULABA-BAFUBIANDI
(School of Mining, Metallurgy and Chemical Engineering, University of Johannesburg)
