\(n_{FeS_2}=\dfrac{120\cdot10^6\cdot0.65}{120}=65\cdot10^4\left(mol\right)\)
\(BTFe:\)
\(n_{Fe_2O_3}=\dfrac{n_{FeS_2}}{2}=\dfrac{65\cdot10^4}{2}=32.5\cdot10^4\left(mol\right)\)
\(m_{Fe_2O_3}=32.5\cdot10^4\cdot160=52\cdot10^6\left(g\right)=52\left(tấn\right)\)
\(H\%=80\%\)
\(m_{Fe_2O_3}=0.8\cdot52=41.6\left(tấn\right)\)
\(n_{Fe}=2n_{Fe_2O_3}=2\cdot32.5\cdot10^4=65\cdot10^4\left(mol\right)\)
\(m_{Fe}=65\cdot10^4\cdot56=36.4\cdot10^6\left(g\right)=36.4\left(tấn\right)\)