含4%雜質(zhì)的生鐵中純鐵的質(zhì)量是2240*(1-4%)=2150.4t
1.設(shè)需要含F(xiàn)e2O3質(zhì)量分?jǐn)?shù)為80%的赤鐵礦的質(zhì)量為x.
Fe2O3+3CO=高溫=2Fe+3CO2
160112
80%x2150.4t
160/80%x=112/2150.4
x=3072t
答：需要含F(xiàn)e2O3質(zhì)量分?jǐn)?shù)為80%的赤鐵礦3072t.
2.設(shè)赤鐵礦2160t能煉出含4%雜質(zhì)的生鐵的質(zhì)量為x.
2160t赤鐵礦含有Fe2O3的質(zhì)量是2160*80%=1728t
Fe2O3+3CO=高溫=2Fe+3CO2
160112
1728t (1-4%)x
160/1728=112/96%x
x=1260t
還需要含4%雜質(zhì)的生鐵的質(zhì)量是2240-1260=980t
設(shè)需要Fe3O4質(zhì)量分?jǐn)?shù)為56%的磁鐵礦石的質(zhì)量為y.
Fe3O4+4CO=高溫=3Fe+4CO2
232168
56%y980t
232/56%y=168/980
x=2416.7t
答：還需要Fe3O4質(zhì)量分?jǐn)?shù)為56%的磁鐵礦石2416.7t.