Ptychography is an electron diffraction technique in which Bragg reflections are interfered coherently in order to measure the phases of diffraction orders directly. Two simple reconstruction methods exist, which require different degrees of coherence in the illuminating electron beam. Simulations on InP <110> for two electron accelerating voltages suggest that the asymmetric ‘dumbbells’ can be...

Mining and mineral processing industry adversely affects ecosystems communities in nearby areas, including high freshwater consumption scarcity. That is why the emerging global trend to use sea water flotation recover valuable minerals from finely disseminated base metals ores. Recent studies investigate of copper, molybdenum, nickel sulphides pyrite, while sphalerite, main for zinc production,...

The purpose of this study is to propose the flotation procedure seafloor massive sulfide (SMS) ores separate chalcopyrite and galena as froth sphalerite, pyrite, other gangue minerals tailings, which currently facing difficulties due presence water-soluble compounds. obtained SMS ore sample contains CuFeS2, ZnS, FeS2, SiO2, BaSO4 in addition PbS PbSO4 Pb minerals. Soluble compounds releasing Pb...

The relationship between the grinding characteristics of polymetallic complex ore and its component minerals, pyrrhotite, sphalerite, quartz, under action abrasion was studied, based on batch experiments theoretical analysis methods selective grinding. results show that when subjected to abrasion, crushing effect enhanced by existence is, sphalerite plays a positive role in ore. reduced pyrrhot...