Monday, July 7, 2008

Indian cement industry cleans up its act: CSE survey

A recent survey of the cement industry finds that the sector is more energy-efficient than even its counterparts in Europe and the US. However, the Centre for Science and Environment survey recommends a stringent regulatory regime for better mine management

The Indian cement industry, a potentially high polluter and the country's biggest excise payer after tobacco, has earned praise for its efforts to reduce air pollution and energy use in its manufacturing practices. However, the industry has been criticised for its bad mining practices, in a survey by the Centre for Science and Environment (CSE), the Delhi-based organisation.

The countrywide survey, which covered 41 top cement producers across nine Indian states, representing 80% of the sector, resulted in the sector being awarded the CSE's Three Green Leaves eco-award.

The Chennai-based Alathiyur Works, which was awarded the prestigious Four Green Leaves award, is the first plant in India to receive this honour. Gujarat Ambuja Cement Limited's Gujarat plant bagged second spot, while the third spot was shared by three companies -- J K Lakshmi Cement Limited, Prism Cement Limited and ACC's Gagal Cement Works.

While the cement industry may have scored higher points than three other polluting industries previously rated for eco-friendly practices by the CSE under its Green Rating Project (GRP) -- paper pulp, chlor-alkali and automobiles -- the market leaders in the industry were not the environment leaders. The industry has performed poorly where it has no economic returns, says the CSE. "The cement industry's better environmental performance in energy and waste-utilisation is not because of environmental concerns but because of better economic returns," stresses Sunita Narain, director of the CSE.

Grasim Industries Limited, from the Aditya Birla Group, which has a 22% market share in this booming industry, was rated "mediocre" by the CSE. The next largest cement company, the prestigious Associated Cement Companies (ACC) Limited, now jointly owned by multinational Holcim and the Indian Ambuja Group, scored less than 35% marks as a group.

The study observes that while the cement industry does not fit the definition of a "sustainable industry", an "acceptable trade-off" can certainly be proposed. What the study attempts to do is to benchmark the performance of companies against such a trade-off.

The sector scores high because of certain initiatives taken to reduce air pollution and the fact that it is today one of the world's most energy-efficient, more so even that its counterparts in the US or Europe.

The rating found that energy is the sector's biggest production cost, and Indian companies have done a lot to reduce this cost. They have modernised their technology and have focused on producing more blended cement. According to the GRP's assessment, the Indian cement sector (after Japan) is the second most energy-efficient cement sector in the world.

The GRP also found that emissions of carbon dioxide -- which leads to global warming -- from Indian cement companies are significantly lower than European and American cement companies. "This is an important message to give out to the developed world, where the general feeling is that India is not doing enough to combat global warming," says Chandra Bhushan, head of the GRP and associate director of the CSE.

Among the industrial sectors, the cement industry is the second largest emitter of carbon dioxide, and accounts for 5% of global human-made carbon dioxide emissions.

The study recommends strong regulatory control over the sector. To begin with, regulators can do away with cheap mine leases and provide incentives for good mine management and disincentive for poor management. The economic benefits of mining must also belong to local communities, whose resources are exported by the sector.

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Source: www.cseindia.org

Monday, June 30, 2008

Indian cement industry now..

For India, the world's second largest producer of cement, the recent boom in infrastructure and the housing market has only boosted its cement industry. Add to that an increasing global demand and a flurry of activity in infrastructure projects – highways roads, bridges, ports and houses – has sparked off a spate of mergers and acquisitions in the sector. Furthermore, the country’s finance minister, P. Chidambaram, has stated that India would double spending on infrastructure over the next five years to sustain its record economic growth and modernise its infrastructure.

Cement companies are fast developing plants to provide for a rapidly expanding economy. The cement industry is therefore poised to add 111 million tonnes (mt) of annual capacity by the end of 2009-10 (FY 2010), riding on the back of approximately 141 outstanding cement projects.

According to a report by the ICRA Industry Monitor, the installed capacity is expected to increase to 186 mt per annum (mtpa) by the end of FY 2008, and 219 mtpa by end of FY 2009, and further up to 241 mtpa by FY 2010-end. As a result, India's cement industry will record an annual growth at 10 per cent in the coming years with higher domestic demand resulting in increased capacity utilisation.

Domestic Players

While the Cement Corporation of India, a Central public sector undertaking, comprises 10 units; the various State governments own 10 large cement plants. Among the leading domestic players in terms of cement manufacturing are: Ambuja Cement, Aditya Birla Group (which owns UltraTech Cement), ACC Ltd., Binani Cement, India Cements and J K Cement. They are not only the foremost producers of cement but also enjoy a high level of equity in the market.

Industrial production

The cement industry is enhancing its production levels as new homes and offices are being built, and in keeping with the economy’s annual growth rate. According to the Cement Manufacturers Association, the overall cement production rose by 8.11 per cent during 2007-08 to 168.29 million tonnes (mt) as against 155.66 mt in 2006-07.

In fact, the 16.37 mt produced by the domestic cement industry in March 2008 has been the highest ever by the industry in a single month.

* Cement production of ACC increased 5.58 per cent to 1.89 mt in March against 1.79 mt in the same period last year. Dispatches rose 4.91 per cent to 1.92 mt (1.83 mt)
* Ambuja Cements, another Holcim group company, reported 23 per cent rise in production to 1.77 mt (1.43 mt) in March, while dispatches were up 16 per cent to 1.72 mt (1.47 mt).
* The Aditya Birla group’s production went up 4.8 per cent during 2007-08 to 30.6 mt (29.24 mt), while dispatches increased 4.5 per cent to 30.55 mt (29.2 mt).
* India Cements recorded a 46 per cent growth in sales and posted a 99 per cent growth profit in the nine months ending December 2007.

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Res :- ibef.org

Tuesday, June 24, 2008

Indian Cement Industry: In Tandem With Economic Growth

Cement demand has posted a healthy growth rate of 11.16% in tandem with strong economic growth of the country. The GDP growth in the current fiscal is expected to be in excess of 8.1 per cent and during the half year Jan-June 2006, cement industry grew around 12.2 % as compared to 10.5 % for the corresponding previous year.

During 2005, the industry produced and supplied over 136 million tonnes of cement, including export of 9 million tonnes of cement and clinker. The industry capacity was 157 million tons. The industry achieved production of 141.81 million tons in fiscal 2005–06 compared to 127.57 million tons during corresponding previous year.


During 2005, the industry produced and supplied over 136 million tonnes of cement, including export of 9 million tonnes of cement and clinker. The industry capacity was 157 million tons. The industry achieved production of 141.81 million tons in fiscal 2005–06 compared to 127.57 million tons during corresponding previous year.


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Res :- markets.moneycontrol.com

Wednesday, May 7, 2008

Cements Types, Use and Strength

Ordinary cement

This type of cement is used a lot today, and is still known as OPC (ordinary Portland cement) ... It is ground up into a powder to form ordinary OPC

Rapid heat cement

They generate more heat in the early stages and can be useful in cold weather concreting. ... as either rapid-setting or extra rapid hardening may be

Low heat cement

Low Heat Cement complies with AS 3972, Special Purpose Type LH/SR. It is manufactured from the ingredients of specially selected cement clinker and ground granulated blast furnace slag, that result in significantly lower heat generation during the process of hydration than the comparable Portland Cement.

Portland blast furnace cement

The granulated slag made by the rapid chilling of suitable molten slags from blast furnaces forms the basis of another group of constructional cements. A mixture of portland cement and granulated slag, containing up to 65 percent slag, is known in the English-speaking countries as portland blast-furnace (slag) cement.

High alumina cement

of High Alumina Cement, Alumina Cement, Refractory Cement, Refractory Materails, ... Density Corundum Bricks, high alumine cement ca50-G5, G7, G9, fused, ca70, ca80

Expanding cement

Expanding and nonshrinking cements expand slightly on hydration, thus offsetting the small contraction that occurs when fresh concrete dries for the first time. Expanding cements were first produced

Quick setting cement

Rapid cure allows for quick access to repaired areas. Garonite anchoring cement sets and expands rapidly, curing twice as strong as concrete in one hour. Use indoors or out
Air & trading cement

Hydrophobic cement

Cement is a hydraulic bonding agent used in building construction and civil engineering. It is a fine powder obtained by grinding the clinker of a clay and limestone mixture calcined at high temperatures. When water is added to cement it becomes a slurry that gradually hardens to a stone-like consistency. It can be mixed with sand and gravel (coarse aggregates) to form mortar and concrete.

There are two types of cement: natural and artificial. The natural cements are obtained from natural materials having a cement-like structure and require only calcining and grinding to yield hydraulic cement powder. Artificial cements are available in large and increasing numbers. Each type has a different composition and mechanical structure and has specific merits and uses. Artificial cements may be classified as portland cement (named after the town of Portland in the United Kingdom) and aluminous cement

White cement

White portland cement is readily available throughout North America. It has essentially the same properties as gray cement, except for color, which is a very important quality control issue in the industry.

The color of white cement depends on raw materials and the manufacturing process. It is the metal oxides (primarily iron and manganese) that influence the whiteness and undertone of the material. White cement is manufactured to conform to ASTM C 150, Specification for Portland Cement. Although Types I, II, III, and V white cements are produced, Types I and III are the most common.

White cements produce clean, bright colors, especially for light pastels. Many different colors can be created by adding pigments to concrete made with white portland cement. Two or more pigments can be combined to achieve a wide range of colors. White cement (or a mixture of white and gray cement) can be specified to provide a consistent color of choice. An even greater variety of decorative looks can be achieved by using colored aggregates and varying the surface finish treatment or texture.

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Resource :Yahoo Answers