Chromite ores are basically classified on basis of Cr2O3 content and Cr to Fe ratio in a sample. The higher content of Cr increases the value of the ore but this is greatly affected by the presence of impurities in form of silicates, oxides or hydroxides. The present study was performed to analyze the impurities of chromite ore collected from Prangghar (Mohmand agency), Pakistan. From x-ray dif...

Research subject. The transformed clastic ores (ore diagenites) of the Ishkinino Co-bearing massive sulfide deposit hosted by serpentinites Main Uralian Fault Zone. Materials and methods. structures textures were stu died. trace element contents sulfides oxides determined using LA ICP MS. physical chemical modeling diagenetic formation accessory As minerals was conducted Selektor program packag...

In pilot-plant tests, the linolenate content of soybean oil was reduced to less than 1% without increasing the saturates, by hydrogenation to an IV of about 115 with an active copper-chromite catalyst. The linolenate-linoleate selectivity ratio (KLe/KLo ) was from 9 to 12. Several commercial copper-chromite catalysts were used in hydrogenation tests. The activities of four of five commercial ca...

Direct alloying of chromium by chromite attracts a lot interest for its superiority in energy-saving and process simplification. The knowledge reduction FeCr2O4, the main component chromite, is key to understanding mechanism from chromite. effect melt composition (carbon addition) temperature on FeCr2O4 carbon-containing iron was studied. higher carbon content melt, recovery obtained. Similarly...

The East Sulawesi Ophiolite, one of the three largest ophiolites in world, contains important podiform chromitites. However, origin these chromite deposits is not well constrained. Here, we present detailed mineralogy and situ chemistry solid inclusions within for chromitites from Kabaena Island, Southeast Sulawesi. Chromite grains have low TiO2 (0.17–0.27 wt%) Al2O3 (13.4–15.1 contents high Cr...