Calculator Suite

Process tools for coal-kiln DRI

Fe Yield Kiln Thermal Coal Quality C / Fe Optimizer

Inputs

Sponge output

t/d

Coal charged

t/d

Coal GCV

kcal/kg

Heat demand

Gcal/t

Combustion effic.

Energy

Kiln thermal balance

Heat Demand

200.00Gcal/d

Gross Heat (Coal)

728.00Gcal/d

Useful Heat

473.20Gcal/d

× combustion efficiency

Surplus / Deficit

273.20Gcal/d

Safe — coal sufficient

Specific Coal

1.400t/t

Heat Utilization

42.27%

demand ÷ useful heat

Note — 2.0 Gcal/t is a working benchmark for hematite + non-coking coal. Adjust if you have a measured value. Combustion efficiency 60–70% is typical for coal kilns due to air-ratio losses and unburnt carbon in char.