Fuels and Combustion
Increase in ash content of blast furnace coke

Reduces its consumption in the furnace
Does not affect its consumption in the furnace
Decreases its hardness and abrasion resistance
Increases its consumption in the furnace

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Fuels and Combustion
Cannel coal

Is a non-banded coal which can be ignited easily with a match stick or candle flame, hence is so named
All of these
Has a high volatile matter content and burns with a luminous smoky flame
Is non-coking

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