production of building lime in india
TRANSCRIPT
Lime burning in India
Sangeeta BaisKalakriti
Limestone is a sedimentary rock composed largely of the minerals calcite and aragonite. Many limestones are composed from skeletal fragments of marine organisms .
A seashell or sea shell, also known simply as a shell, is a hard, protective outer layer created by an animal that lives in the sea.
Chalk, is a soft, white, porous sedimentary rock, a form of limestone composed of the mineral calcite.
Kankar lime, is also known red lime. It is an impure concretionary carbonate of lime, usually occurring in nodules
Resources
Lime cluster1.Western region in Gujarat,
Jodhpur, Jaipur and Alwar inRajasthan, and Vani inMaharashtra
2.Northern region – Dehradun inUttaranchal, Biharigarh andMeerat in Uttar Pradesh andPonata Sahib in HimanchalPradesh
3.Southern region- Pidurugulla,Andhra Pradesh, Gulbarga andBagalkol in Karnataka andChennai,Tirunelveli in TamilNadu, Kottayam in Kerala
4.Central region- Katni, Satna andMaihar in Madhya Pradesh
Process for firing
Limestone broken to small pieces
Coal broken to small pieces
Alternate layers of lime stone and coal in the kiln and firing
Cooling and taking the material out
Sieving and removing over burnt and under burnt lime- removing lime ash
Packing in Air tight bags
Katni and Satna region1. 14 clusters whereas in
Satna district, these are concentrated in Jhukeni, Maiher and Satna.
2. The region is very rich in terms of lime stone deposits.
3. Cement plants4. All the lime kilns are
located around the lime stone quarries.
5. Continuous kiln6. Main source of lime in
central and north India for building purpose
7. Quick lime- Pure
1. Lime used for the construction in the rural areas
2. Lime ash for the roofs3. Lime wash4. Floors
Katni and Satna region
1. It has more than 300 lime kilns
2. and3. The lime kilns are
cylindrical in shape of a height upto 25’ to 40’.
4. These kilns are loaded from the top with a mix of crushed lime stone with coal.
5. These are continuous kilns which are feededonce in a day from the top.
Piduguralla, Andhra Pradesh
Jaipur lime kilns
1. Few kilns are active and rest are closed
2. The small lime kilns are cylindrical in shape 3 meters
3. These kilns are feededfrom the top with a mix of crushed lime stone with coal.
4. These are continuous kilns which are loaded once in a day from the top.
Jaipur lime kilns
1. Traditional small-scale limekilns in Tirunelvelidistrict in Tamil Nadu
2. These kilns called “ulai”3. Batch kilns4. Typically these kilns have
an open top and the kilns are constructed with local material
Tirunvelveli lime kilns
Hydration plants
1. Controlled hydration of quick lime to convert it into calcium hydraoxide
2. Limited exposure to water and air
1. Dry hydrated powder of calcium hydroxide
2. Packing in air tight bags
Hydration plants
Hydration plants
1. Need to check suitability for conservation works
2. Date of hydration3. Method of storgae4. Types of bags5. And transporation6. Material stored in open
areas7. Process of preparation
Shell lime kilns- Kumarkom
Shell lime kilns- Kumarkom1. Shell lime kilns are locally
known as Chulha. Shell lime collection from the lake
2. washing before firing3. Petroleum coke for firing4. Coconut shells
Shell lime kilns- Kumarkom
Shell lime kilns- Kumarkom1. Kumarakam Lime Industrial
Co-operative society located in Kumarakam region
2. 7-8 hours for firing3. One day for cooling4. Sieving to remove the Ash
material
Shell lime kilns- Kumarkom
Shell lime kilns
1. Hydration of shell lime inbatches
2. Firstly fired shell is kept inbamboo bucket
3. Water is poured in thebuckets
4. Spreading wet material isspread over the polythene onthe ground.
5. Hydration in an hour
1. Sieve and packed in air tightbags.
2. This is the purest form ofthe calcium hydroxide whichis used for high quality oflime wash.
3. Lime plaster4. Lime wash
For more information please contact:Sangeeta Bais
KalakritiAn organization for promoting traditional built heritage
14 T, Sector 8, Jasola Vihar, New Delhi-110025
Email to:[email protected]
www.kalakriti.org.in