Best answer: Why is coal added to cement?

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.

How is coal used in cement industries?

Coal almost halves the cost of fuel. … The cost of fuel constitutes 25 per cent of the total cost of manufacturing cement. A cement factory with a capacity of 2000 tons per day can save up to Rs300 million a year by use of a mixture of local and imported coal.

What is the importance of coal?

Coal is primarily used as fuel to generate electric power in the United States. In coal-fired power plants, bituminous coal, subbituminous coal, or lignite is burned. The heat produced by the combustion of the coal is used to convert water into high-pressure steam, which drives a turbine, which produces electricity.

How much coal is used in cement?

Fuel used by the US cement industry is 60% coal, 13% petroleum coke, and 3%, natural gas. According to the US Energy Information Administration (EIA), the manufacture of cement accounts for approximately 6% of the total global energy use in 2010.

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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.

What kind of coal is used in cement plant?

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

What is AFR in cement industry?

The sourcing of suitable waste as a feedstock, its appropriate pre-treatment and technical evaluation are, on the other hand, the essential preconditions for practicable “co-processing”, the term used to describe thermal valorization, including the clinkerization of minerals. …

What are the positive effects of coal?

Coal provides many jobs. Unlike other forms of energy (nuclear, natural gas, oil, hydroelectric), coal provides many jobs in removing coal from the earth, transporting it to the utility, burning it, and properly disposing of coal ash. Coal is American made. We do not have to import this product into this country.

How is coal used now?

Although coal use was once common in the industrial, transportation, residential, and commercial sectors, today the main use of coal in the United States is to generate electricity. The electric power sector has accounted for the majority of U.S. coal consumption since 1961.

What are disadvantages of coal?

The major disadvantage of coal is its negative impact on the environment. Coal-burning energy plants are a major source of air pollution and greenhouse gas emissions. In addition to carbon monoxide and heavy metals like mercury, the use of coal releases sulfur dioxide, a harmful substance linked to acid rain.

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