Lime Kiln

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LIME KILN

The lime kiln is a device that converts mined limestone [CaCo3] to lime [CaO]. Limestone is broken into small pieces and fed into the lime kiln in alternating layers of limestone and fuel. Coal or firewood is usually the fuel used. Lime burning is either carried out in large continuous kilns (capacity about 10 tons / batch) or in very small capacities (250 kg per batch) by small lime makers. TIDE kilns have been developed for a batch size of 500 kg of to improve the productivity and profitability of the small lime burners. Energy efficiency has been obtained by optimizing the L/D (length to diameter ratio) of the kiln, restricting the air inlet into the kiln and by the provision of a chimney to have a good draft. The kiln can also be operate in the continuous mode

Features

Complete conversion of limestone into lime with minimum of rejects (unburnt lime stone)
Generation of high temperatures by optimization of the air fuel ratio
Easy to operate with low drudgery
Fuel saving potential of about 30%
Kilns of 250 and 500 kgs per batch designed although larger kilns are recommended.
Can also be operated in the continuous mode
Reduction of smoke in working environment through use of chimney
Kiln design provides for thermal stresses due to expansion

ENERGY EFFICIENT KILNS

Lime Kiln

Lime Kiln