Operations and Basic Processes in Ironmaking by José Ignacio Verdeja González & Daniel Fernández González & Luis Felipe Verdeja González

Author:José Ignacio Verdeja González & Daniel Fernández González & Luis Felipe Verdeja González
Language: eng
Format: epub
ISBN: 9783030546069
Publisher: Springer International Publishing

Basically, a blast furnace is a shaft furnace (if it is analyzed as a chemical reactor, it is a plug flow reactor) with a refractory lining of variable thickness and quality, covered with a carbon steel sheet (15 mm in thickness) and where it is possible to distinguish the following elements (Fig. 6.3):

Fig. 6.3Scheme of the elements and zones representatives of the blast furnace

Throat: zone for charging the burden [ferric charge + reductant (coke)]. The blast furnace gases circulate through the throat of the furnace toward the dry and wet cleaning systems. The temperature in the throat is 200–250 °C, the pressure is around 1.5 atm (there are blast furnaces in Russia and other countries that operate with bigger excesses of pressure), and the approximate composition of the gas is that indicated in Table 6.1 (Babich et al. 2008, page 153).Table 6.1Composition of the blast furnace gas

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