In the present investigation an attempt has been madeto determine the effect of firing temperature, firing time and ingredients/additives (CaO, MgO. SiO,, Al=0.) on the swelling behaviour of iron ore pellets. For this purpose two Indian iron ore fines from Bailadila and Noamundi deposits and chemically pure iron oxide were used. From the results obtained, it is observed that the swelling of iron ore pellet is controlled by the firing temperature, firing time and additives/ingredients present in the pellet. The growth of iron whisker is contro[led by these ingredients. The presence of free lime promotes the swelling index of the pellet. KEYWORDS: swelling; whisker growth; firing temperature; firing time; iron ore; pellet crushing strength. l.
Coal combustion and gasification are the processes to utilize coal for production of electricity and many other applications. Global energy demand is increasing day by day. Coal is an abundant source of energy but not a reliable source as it results into high CO 2 emissions. Energy industries are expected to decrease the CO 2 emission to prevent global warming. Coal gasification is a process that reduces the CO 2 emission and emerges as a clean coal technology. Coal gasification process is regulated by several operating parameters. A Number of investigations have been carried out in this direction. A critical review of the work done by several researchers in the field of coal gasification has been compiled in this paper. The effect of several operating parameters such as coal rank, temperature, pressure, porosity, reaction time and catalyst on gasification has been presented here.
In the present investigation an attempt has been madeto study the swelling behaviour of iron oxide pellets madefrom chemically pure iron oxide and natural ore from Bailadila Mines. Thetests
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