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Cement production using fly ash to

help power firms save land

New Delhi: By setting up cement projects to make use of the fly ash generated

from their power plants, utilities such as NTPC Ltd and Reliance-Anil Dhirubhai

Ambani Groups Reliance Power Ltd (RPL) will also be able to use their project

land for more productive purposes by cutting down on storage areas.

Fly ash is generated while burning coal. One tonne of cement needs an input of 0.2

tonne of fly ash. Not only is the cost of cement produced from fly ash 5-10% lower

when compared with cement produced the traditional way, but it also saves on

transportation and disposal of a material considered detrimental to the

environment.

Fly ash needs ash dykes for storing. A 1,000MW project requires around 1,000

acres for ash dykes for a 25-year period. This benefit is in addition to leveraging

the production of fly ash for cement manufacturing, said a senior official at the

Central Electricity Authority, the apex power sector planning body in the country.

While RPL plans to set up a 20 million tonnes per annum (mtpa) cement plant nearSatna in Madhya Pradesh at an investment of Rs10,000 crore, NTPC plans to

manufacture cement near six of its power plants through joint ventures. Even

companies such as Grasim Industries Ltd, UltraTech Cement Ltd, Sanghi

Cement Ltd, India Cements Ltd, Zuari Cements Ltdand My Home Industries

Ltd, among others, have evinced interest to set up greenfield cement plants in the

vicinity of 4,000MW each ultra mega power projects in order to utilize the fly ash

that would be generated from them.

R.S. Sharma, chairman and managing director of NTPC, said: Using fly ash forcement production will definitely help in better land utilization. The amount of land

savings will depend on the size of the cement manufacturing facility, which in turn

will determine the amount of fly ash utilization.

An RPL spokesperson didnt comment.

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Around 30-40% of the land required for the power project goes towards ash

handling. For a coal pit head power project unless you have cement manufacturing

facilities nearby, there is no real use of that ash. In todays land spread, it is very

difficult to have contiguous parcel of land. Such an effort will also increase the

doability of the project, said Anish De, chief executive officer at Mercados Asia, anenergy consulting firm.

India is the worlds second largest cement market and has a cement manufacturing

capacity of 189mtpa, which is expected to go up to 245mtpa by 2010. The

countrys market size is pegged at Rs55,000 crore, next only to China.