1600t赤铁矿可以提出的Fe2O3=1600乘以80%=1280t
1280tFe2O3含铁=1280乘以56乘以2/（56乘以2+16乘以3）=896t
896t铁需要含3%杂质的生铁=896/（1-3%）=923.7t
答：可以炼出含杂质3%生铁923.7t