Best answer: Why coal is used in cement?

Why is coal used in cement industry?

Some amount of high calorific value and low sulphur imported coal has to be mixed with local coal. Lakhra coal of Sindh contains 5.72% of sulphur on average basis. … Thar coal deposit contains only 1.16% sulphur and therefore it is most suitable for cement plant.

Does cement require coal?

For integrated cement plants, energy in the form of heat is required to raise the kiln temperature to over 1,450 degrees Celsius required to produce clinker. This heat is predominantly generated by coal and natural gas, and to a lesser extent by diesel oil.

What kind of coal is used in cement production?

The cement industry mainly uses non coking bituminous coal and lignite in small quantities in plants in Tamil Nadu and Rajasthan.

What is the main reason coal is used?

Coal is used primarily in the United States to generate electricity. In fact, it is burned in power plants to produce more than half of the electricity we use.

How is coal used in cement making?

To produce cement, energy is required. Coal is an important source of the energy needed. … Clinker is mixed with gypsum and ground to a fine powder to make cement. Coal combustion products (CCPs), such as Fly Ash also play an important role in cement manufacture and in the construction industry generally.

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How much coal is used in cement manufacturing?

Early cement plants used coal for drying slurry and for power generation, and coke for kiln burning. Per tonne of clinker produced, consumption was around 0.5 tonnes of coke and 0.1 tonnes of coal.

What can I use instead of cement?

Concrete: Cement Substitutes

  • Pulverised Fuel Ash (PFA), aka ‘Fly ash’ as a cement substitute. PFA is a by-product of coal-burning power stations. …
  • Ground Granulated Blast-furnace Slag (GGBS) as a cement substitute. GGBS is a by-product of the iron and steel industry. …
  • Silica fume. …
  • Limestone fines. …
  • Alternative fuels.

Why is concrete bad for environment?

The cement industry is one of the main producers of carbon dioxide, a potent greenhouse gas. Concrete causes damage to the most fertile layer of the earth, the topsoil. Concrete is used to create hard surfaces which contribute to surface runoff that may cause soil erosion, water pollution and flooding.

How many percent of coal is consumed in cement industry?

The limited overlap between coal and cement production is to be expected, given that the cement industry only consumes around 4% of the coal produced every year.

Is coal cheap or expensive?

Coal is only considered cheap because coal plants do not have to pay for the full social and environmental costs of coal burning on people’s health, the natural environment, and our climate.