Heat Balance of Kiln

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click here to Download the Most Important 13 Books in Cement Industry 

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Heat Balance of Kiln




I worked in more than 100 cement plant

the Below Figures is the average values , you can use it for bench-marking in your plant , please share in the Comments the figures in your plant even if you will keep the name of the plant as a secret


let’s begin

Heat Input

Heat from the combustion of coal


Sensible Heat from the coal


Sensible heat of the raw meal feed

Sensible heat from cooler air

Sensible heat from primary air

Sensible heat from false air

Sensible Heat from coal conveying air

Sensible heat from combustion

Sensible Heat from the moisture in the feed




Heat Output

Heat of Clinker reaction

Heat loss through the clinker at cooler outlet

Heat loss through the dust in the exhaust gas

Heat loss through evaporation of moisture


Heat loss from exhaust gases

From preheater exit

From Cooler outlet gases

Unaccounted losses


TOTAL OUTPUT = 876.103434 Kcal/Kg clinker



click here to Download the Most Important 13 Books in Cement Industry 

click here to Download the Most Important 13 Books in Cement Industry 

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23 thoughts on “Heat Balance of Kiln”

  1. The manufacturing of concrete involves first blasting rocks such as limestone out from quarries, then transporting the rocks to mills, where they are further crushed and treated under high temperature through various processes resulting in the production of cement. Such energy-intensive processes create a significant environmental footprint; the production of traditional Portland cement accounts for about 5 percent of the world’s carbon dioxide emissions. To cut down on these emissions, Buyukozturk and others have been looking for sustainable additives and alternatives to cement. Volcanic ash has several sustainable advantages as an additive in manufacturing concrete: The rocky material, which lies in ample supply around active and inactive volcanoes around the world, is naturally available; it is typically considered a waste material, as people typically do not use it for any widespread purpose; some volcanic ashes have intrinsic, “pozzolonic” properties, meaning that, in powder form, the ash with a reduced amount of cement can naturally bind with water and other materials to form cement-like pastes. “Cement production takes a lot of energy because there are high temperatures involved, and it’s a multistage process,” says Chin, who with Kupwade-Patil led much of the group’s experimental work as a student in the Undergraduate Research Opportunities Program (UROP) with Buyukozturk.

  2. Hello,
    Have you tried to make a heat balance but instead of coals to calculate it for RDF? If yes, can You, please send me the calculations?

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