a) In a Blast Furnace hematite is reduced to pig iron according to the following reaction;...

 

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a) In a Blast Furnace hematite is reduced to pig iron according to the following reaction; 2Fe(1) + 3CO2(g) + 3CO(g) Fe2O3(s)+6CO(g) Coke of composition 94% carbon is used to produce carbon monoxide by combustion with air at the tuyeres. 3.5% of the charged carbon is absorbed by the pig iron and 90.5% burns to carbon monoxide only. Assume no carbon dioxide is produced by combustion of coke. Using a basis of 1000kg of pig iron, calculate; (i) Weight of hematite reduced to pig iron. (ii) Volume of carbon monoxide (m at STP) required to produce 1000kg of pig iron. (iii) Volume of air required to burn the coke charged. [2] [2] [3] (iv) Volume (m at STP) and percentage composition of gases produced from combustion and reduction reactions. [3] b) Converting of molten Cu-Fe-S matte is normally conducted in a Peirce-Smith converter. With the aid of a diagram give a detailed description of the batch converting process. [8] c) State four uses of copper? [2] +02 a) In a Blast Furnace hematite is reduced to pig iron according to the following reaction; 2Fe(1) + 3CO2(g) + 3CO(g) Fe2O3(s)+6CO(g) Coke of composition 94% carbon is used to produce carbon monoxide by combustion with air at the tuyeres. 3.5% of the charged carbon is absorbed by the pig iron and 90.5% burns to carbon monoxide only. Assume no carbon dioxide is produced by combustion of coke. Using a basis of 1000kg of pig iron, calculate; (i) Weight of hematite reduced to pig iron. (ii) Volume of carbon monoxide (m at STP) required to produce 1000kg of pig iron. (iii) Volume of air required to burn the coke charged. [2] [2] [3] (iv) Volume (m at STP) and percentage composition of gases produced from combustion and reduction reactions. [3] b) Converting of molten Cu-Fe-S matte is normally conducted in a Peirce-Smith converter. With the aid of a diagram give a detailed description of the batch converting process. [8] c) State four uses of copper? [2] +02