Hydrogen Reduction of Hematite Ore Fines to Magnetite Ore Fines at Low Temperatures
نویسندگان
چکیده
منابع مشابه
Pelletisation Behavior of Fluxed Iron Ore Pellets of Varying Basicities Made with Waste Fines
The present study deals with the utilization of fines generated from comminution process (crushing, grinding and screening) of the Run of Mines into value added products i.e. fluxed iron ore pellets. The study comprises to understand the physical and mechanical behavior of five distinguished chemical compositions of green and dried iron ore pellets with respect to a typical Mini Blast furnace (...
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A suitable grinding fineness and flow-sheet could potentially reduce the mechanical entrainment of gangue minerals in the flotation process of microcrystalline graphite. In this study, the suitable grinding fineness of a commercial graphite ore was estimated by mineralogy analysis and laboratory grind-flotation tests. The target grind size of this ore should be 92% passing 74 μm based on the mi...
متن کاملMagnetite-hematite Iron Ore Occurrences in the Triassic-paleozoic Metamorphic Complex of Medvednica Mountain, Croatia
Iron ore occurrences are situated on the south-eastern slopes of the Medvednica Mountain. They occur as discontinous, decameters long and 2-3.5 m thick bedded, poorly mineralized (15-35 % Fe) lenses. A narrow, 6 km long, ore zone strikes NE-SW from Tisova Peć to Pustodol-Adolfovac. It is spatially and genetically bounded to the basic volcanogenic-sedimentary series (SEDEX-type), metamorphosed i...
متن کامل"5t;LEcnVE DESLIMINGS OF FINE IRON ORES BASED ON AGGREGATION
Hematite fines were found to form aggregates with magnetite ~des in the same slurry, without the help of any flocculants. Because of this aggregation. fine iron ores containing hematite and -anetile can be successfully concentrated by multi-stage deslimings. ~ that the ore is finely ground and silicate gangues properly ~rsed. The effectiveness of this technique has been tested on a UMIIIIIercia...
متن کاملRECOVERY OF IRON FROM LOW-GRADE HEMATITE ORE USING COAL-BASED DIRECT REDUCTION FOLLOWED BY MAGNETIC SEPARATION
In the present work, iron recovery from a low-grade hematite ore (containing less than 40% iron), which is not applicable in common methods of ironmaking, was studied. Non-coking coal was used as reducing agent. Reduction experiments were performed under various coal to hematite ratios and temperatures. Reduction degree was calculated using the gravimetric method. Reduced samples were subjected...
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ژورنال
عنوان ژورنال: Journal of Chemistry
سال: 2017
ISSN: 2090-9063,2090-9071
DOI: 10.1155/2017/1919720