RI 7031 Developing A Thermochemical Model For The Iron Blast Furnace - Measurement Of Rate Coefficient For Reduction Of Iron Ore Pellets In A Packed Bed

The effective coefficient for rate of reduction of a sample of granular iron ore may be determined by passing the reducing gas through a bed of the are at constant flow rate and periodically analyzing the effluent gas, The method of analyzing the data is based on a mathematical model that takes into account the variation in composition of the gas and solids with time and position in the bed. A method is described for determining the value of the rate coefficient that gives best agreement between the observed and calculated analyses of the effluent gas.