01 · Iron Ore Charge
t
%
02 · Sponge Iron Product
t
%
%
03 · Reductant & Flux
t
t
Recovery
Fe balance: ore → sponge iron
Metallic Fe Yield
81.04%
Fe(M) ÷ Fe in ore
Total Fe Recovery
86.90%
Fe(T) ÷ Fe in ore
Metallization
93.26%
Fe(M) ÷ Fe(T)
Sponge Yield
62.00%
Sponge ÷ ore
Fe in Ore
63.50t
Theoretical max metallic Fe
Fe Lost
12.04t
To char, ESP dust, accretion
Specific Consumption
Operational ratios
Ore / Sponge
1.613t/t
Coal / Sponge
1.371t/t
Dolomite / Sponge
0.048t/t
C / Fe (input)
1.339t/t
Operating guidance — Target Fe(M) yield of 92–94% for hematite-fed coal kilns. Below 88% typically signals under-reduction (low residence time, low C/Fe, coal CSN issues). A Fe(T) recovery shortfall vs Fe(M) yield indicates physical Fe loss to char and ESP dust.