The ore used in an iron blast furnace was of the following composition:

$\backslash$table$[[,$Per Cent$],[F{e}_2{O}_3,82],[Si{O}_2,14],[A{l}_2{O}_3,2],[H_{2}O,2]]$

$0\mathrm{.}22lb.$ of $CaC{O}_3$ was charged for every pound of ore. The coke amounted to $1lb.$ per pound of pig made and was $90$ per oent $C$ and $10$ per cent ash. The furnace produced per day $600$ long tons of pig iron, which was $94$ per cent $Fe,4C,2Si.$

THE IRON BLAST FURNACE

$115$

The blast$-$furnace gas analysis showed the proportion of $CO$ to $C{O}_2$ to be $3$:$2.$ Assume the blast dry.

Required: $1.$ The weight of ore charged per day.

$2.$ The volume of gas produced per ton of pig iron.

$3.$ The volume and weight of the blast per ton of pig iron.

$4.$ The weight of carbon burned at the tuyeres per ton of pig iron $($see also Prob. $177).$