Question

A copper one containing $20\%$ CusS. $40\%$ FeS: $30\%$ SiO; and $10\%$ H:O is roasted by using fuel oil whose weight is equal to $5\%$ of the ore weight. Exhaust gases formed as a result of combustion process are mixed with the product gas of the roasting reaction and discharged as flue gases. Sulfur is exhausted as sulfur dioside and discharged as tie gases. The products of roasting reaction are CoO. Fe$-$O; ve SiO, Roasting and combustion reactions are realized using $100\%$ excess air. The fuel contains $85\%$ C and $13\%$ H$.$

a$.$ Determine the amount of the air $($m$)$ used per I tome ore.

b$.$ Determine the weight of the roasted ore.

c$.$ How many grams of H$-$O is found in fiue gases per mi$.$

a$)$ CusS$=200$ kg$,$ Fes,$=400$ kg$.$ SiO,$=300$ kg$.,$ H$\mathrm{.}0=100$ kg$.,$ Fuel oil$-50$ kg$.$