Why do we need to Analyse the coal?

Why do we need analysis of coal?

Coal analysis techniques are specific analytical methods designed to measure the particular physical and chemical properties of coals. These methods are used primarily to determine the suitability of coal for coking, power generation or for iron ore smelting in the manufacture of steel.

What do you understand about the analysis of coal?

Summary. The ultimate analysis of coal involves determination of the weight percent carbon as well as sulfur, nitrogen, and oxygen (usually estimated by difference). Trace elements that occur in coal are typically included as a part of the ultimate analysis.

What are the two types of coal?

Types of coal

  • Anthracite contains 86%–97% carbon and generally has the highest heating value of all ranks of coal. …
  • Bituminous coal contains 45%–86% carbon. …
  • Subbituminous coal typically contains 35%–45% carbon, and it has a lower heating value than bituminous coal.

What is the property of coal?

Result of chemical composition and physical characteristic (proximate, ultimate analysis and calorific value of coal and mangrove wood were as follow: coal from Kaltim Prima Coal were moisture: 16.11%, ash: 3.77%, volatile matter: 43.10%, fixed carbon: 37.01%, carbon content: 44.86%, sulfur content: 0.130% and …

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Which of the following is best type of coal?

Anthracite is a dark black form of coal and the highest quality coal. It is very hard, has a low moisture content, and a carbon content of nearly 95%. When burned, anthracite can reach a very high temperature.

What are the types of coal analysis?

Some of the Common Tests conducted on Coal include

  • Calorific value(Gross/net)
  • Proximate analysis- Moisture,Volatile matter, Ash and Fixed Carbon.
  • Ultimate analysis – C,H, O, N, S and Ash.
  • Ash analysis – Al2O3, SiO2, CaO, MgO,TiO2, Na2O, K2O, S etc.,
  • Ash Fusion Temperature.
  • Coke Reactivity.
  • Hard-grove Grindability Index.

What is the formula of coal?

The chemical formula of coal is reported as: C135H96O9NS. Coal is usually taken as 85% carbon based on dry mass.

What are the 4 stages of coal formation?

There are four stages in coal formation: peat, lignite, bituminous, and anthracite.