Fuels and Combustion
In low temperature carbonisation of coal, the

Yield of coke oven gas is 290 Nm³ /ton dry coal
Temperature maintained is 700°C
Yield of tar is about 3% of dry coal
Volatile matter in coke is zero

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Fuels and Combustion
Froth floatation is used for

Washing lump coal (> 80 mm size)
Washing fine coal dust (< 0.5 mm size)
Removing ash from the coal based on difference in specific gravity of coal and ash
All of these

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