A blast furnance burden contains 160 kg Fe203, 54 kg SiO2, 20 kg Al203, 100 kg...

 

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A blast furnance burden contains 160 kg Fe203, 54 kg SiO2, 20 kg Al203, 100 kg CaCO3, and 78 kg C. For the smelting of the above burden 266 Nm3 of air is used. The hot metal produced contains 4 percent C and 1 percent Si, the balance being iron, and it is assumed that all the iron in the burden enters the hot metal. The remaining oxides form a slag, whereas CO2 from the limestone is expelled and mixes with the furnance gas. Carbon in the gas is present partly as COzand partly as CO and there is no free oxygen. (a) Calculate the weight of the hot metal, as well as the weight and composition of the slag; (b) calculate the volume and composition of the furnace gas, all for the above basis. A blast furnance burden contains 160 kg Fe203, 54 kg SiO2, 20 kg Al203, 100 kg CaCO3, and 78 kg C. For the smelting of the above burden 266 Nm3 of air is used. The hot metal produced contains 4 percent C and 1 percent Si, the balance being iron, and it is assumed that all the iron in the burden enters the hot metal. The remaining oxides form a slag, whereas CO2 from the limestone is expelled and mixes with the furnance gas. Carbon in the gas is present partly as COzand partly as CO and there is no free oxygen. (a) Calculate the weight of the hot metal, as well as the weight and composition of the slag; (b) calculate the volume and composition of the furnace gas, all for the above basis.