Manganese investigations -: metallurgical division. ore-dressing studies of manganese ores : concentration of manganese-bearing ore from the Dobbins Mine, Cartersville, Ga, Part 4
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0.37 percent phosphorus 100.0 Roasted heads 5.2 percent Assav Bureau of Mines combined concentrates concen concentrates contained ferromanganese flotation concentrates Flotation test gangue given in table gravity concentrates hour in hydrogen indicated in table Jig and table jig concentrates log washer log-washer concentrates log-washer overflow log-washer products Magnetic portion Nonmagnetic magnetic separation manga manganese and assaying mesh Metallurgical Division middlings and slimes Minus Minus-4 Mn Fe Si02 Mn Fe SiO nese nonmagnetic concentrates nonmagnetic product oleic acid over-all recovery percent Assay percent manganese percent Mn Fe percent Percentage percent silica Percentage of total portion Nonmagnetic portion pound of oleic quartzite Reagents recovery of manganese roasted 1/2 hour roasted in hydrogen Roasting and magnetic sample 2 Product Separation of Flotation Si02 P Concentrates Si02 P Mn siliceous minerals SiOg sodium carbonate table concentrates table middlings test on crude total manganese total Mn Fe treated by flotation Unroasted washer overflow weight and assayed