Search Results - "de Villiers, Johan P. R."

Refinement of iron ore sinter phases: a silico-ferrite of calcium and aluminium (SFCA) and an Al-free SFC, and the effect on phase quantification by X-ray diffraction by Liles, David C., de Villiers, Johan P. R., Kahlenberg, Volker

“…Crystals of a silico-ferrite of calcium and aluminium (SFCA) and an Al-free SFC were prepared from the melt by slow cooling of synthetically prepared mixtures…”
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V oxidation state in Fe–Ti oxides by high-energy resolution fluorescence-detected X-ray absorption spectroscopy by Bordage, Amélie, Balan, Etienne, de Villiers, Johan P. R., Cromarty, Robert, Juhin, Amélie, Carvallo, Claire, Calas, Georges, Sunder Raju, P. V., Glatzel, Pieter

“…The oxidation state of vanadium in natural and synthetic Fe–Ti oxides is determined using high-energy resolution fluorescence-detected X-ray absorption…”
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The Effect of Titanium Oxide Additions on the Phase Chemistry and Properties of Chromite-Magnesia Refractories by De Villiers, Johan PR, Mulange, Delphin, Garbers-Craig, Andrie Mariana

“…The microstructure of a direct-bonded chromite-magnesia refractory brick, typically used in copper and platinum converters, was modified by adding different…”
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The Oxidation Behavior of a Selection of South African Chromites by Swanepoel, Stefan, Garbers-Craig, Andrie M., De Villiers, Johan P. R.

“…Fifteen commercial concentrates that are consumed in ferrochrome pre-oxidative sintering pelletizer operations were characterized, and exposed to oxidative…”
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A new ternary phase in the system CaO–Al2O3–Cr2O3: Crystal structure and thermal expansion of CaAl2Cr2O7 by Kahlenberg, Volker, Villiers, Johan P.R., Odendaal, Dirk, Krüger, Hannes, Song, Shengqiang, Nath, Mithun

“…Polycrystalline material of a novel phase in the system CaO–Al2O3–Cr2O3 has been obtained by solid‐state reactions. Chemical analysis indicated the composition…”
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The platinum-group chemistry and mineralogy of the UG-2 chromitite layer of the Bushveld Complex by McLaren, Christian H, De Villiers, Johan P. R

“…Individual platinum-group elements, as well as Au, Cu, and Ni, were determined in borehole cores of the UG-2 chromitite layer from different localities in the…”
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