82 research outputs found
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FOR production of standard grade Ferro-manganese the
iron content in manganese ores should not exceed certain limits. Vast reserves of ferruginous manganese ores exist in several locations in U. A. R., which do not find good markets on account of their high iron content. Preliminary work showed that the iron content could be successfully reduced by magnetic roasting followed by magnetic sepa-ration. As reduction to the magnetic stage takes place readily in the fluidized state`, it was decided to use the fluidization technique in the present study
Influence of Manganese Oxide and Silica on the Morphological Structure of Hematite Compacts
Influence of Different MgO Coating Methods on Preventing Sticking During Reduction of Fe2O3 Particles in a Fluidized Bed
Effect of Metal Additions to the Reduction of Iron Oxide Composite Pellets with Hydrogen at Moderate Temperatures
Alternative reducing agents in metallurgical processes : gasification of shredder residue material
Shredder residue material (SRM) contains plastic material, which has a potential to replace metallurgical coal for reduction during bath-smelting processes. Among the important parameters affecting its implementation are the gasification and the reactivity of char. Therefore, prior to considering its application in metallurgical processes, the gasification characteristics of the produced char need to be studied. Although the char produced from SRM contains lower fixed carbon compared with coal char, it has a porous structure and high surface area, which makes it highly reactive during gasification experiments. In addition to physiochemical properties, the catalytic effect of ash content of SRM char is attributed to its higher reactivity and lower activation energy compared with coal char. Furthermore, the effect of devolatilization heating rate on the gasification characteristics of produced char is investigated. It was found that the devolatilization heating rate during char production has a considerable effect on morphological properties of the char product. Moreover, the gasification reactivity of char produced at a fast devolatilization heating rate was the highest, due to the less crystalline structure of the produced char. Validerad; 2017; Nivå 2; 2017-05-12 (andbra)</p
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