In this study, 2-hydroxy-3-naphthalene hydroxamic acid (NHA) was used as a collector in microflotation experiments. By comparing the flotation performance of NHA with that sodium oleate (NaOL) and salicylhydroxamic (SHA) commonly industry, separation bastnaesite calcite studied. Potentiodynamic (zeta) measurements, Fourier transform infrared spectroscopy (FTIR) measurements X-ray photoelectron ...

Copper-nickel sulfide ores are one of the main sources platinum. One ways to extract precious metals from such involves melting a concentrate in electric ore smelting furnaces, where melt is divided into matte and slag. Platinum generally concentrated matte; however, some it remains slag, thus leading metal losses. In order reduce platinum losses, forms these phases should be studied. It was fo...

To study the influence of sinter basicity on microstructure, phase composition, and physicochemical metallurgical properties, samples agglomerates with different basicities were sintered investigated. A comprehensive structure, chemical, properties was conducted, optimum values for these determined. The results mineralogical transformations that occurred during sintering process are also presen...

Pseudonannolene spelaea n. sp. is the first strictly cave-dwelling species described for the family Pseudonannolenidae. It is found in iron ore caves in the Brazilian Amazon. The family Pseudonannolenidae is exclusively Neotropical and frequently found in caves of Brazil, from which 20 species are known. The new species is compared with its congeners and with related cave-dwelling species. The ...

Sighter Induced Roll Magnetic Separation tests were conducted on a ferromanganese ore sample to determine the potential significantly upgrade Mn content and Mn:Fe ratio. The had ratio of 1.3 was comprised hematite, cryptomelane, pyrolusite, quartz, goethite braunite. Tests at 4.7, 2.3 1 mm top sizes revealed better separation Fe from sizes. This reflected liberation characteristics oxides both ...