Which grade of coal is used in India?
Which grade of coal is used in India?
Bituminous: It is a medium grade of coal having high heating capacity. It is the most commonly used type of coal for electricity generation in India.
Which is the best quality of coal in India?
Anthracite
Anthracite is the best quality of coal which carries 80 to 95 per cent carbon content. It ignites slowly with a blue flame. It has the highest calorific value. It is found in small quantity in Jammu and Kashmir.
Which grade of coal is best?
Anthracite: The highest rank of coal. It is a hard, brittle, and black lustrous coal, often referred to as hard coal, containing a high percentage of fixed carbon and a low percentage of volatile matter. Bituminous: Bituminous coal is a middle rank coal between subbituminous and anthracite.
What is the GCV of Indian coal?
This coal is widely used in power plant and cement boilers production, various different GCV available as per requirements….2500 GCV Indian Coal.
| Usage/Application | Boilers |
|---|---|
| Ash Content | 7.99 % DB Basis |
| Volatile Matter | 39.24 % DB Basis |
| Total Moisture | 7.26 % DB Basis |
| Gross Calorific Value | 7847 Kcal/Kg DB Basis |
What is grade coal?
Coal grade is an economic or technological classification of the relative quality of a coal for a particular use. For example, a coal which can be used to generate steam for electricity, may not be a high-grade coal for metallurgical uses. Terms such as low-ash or low-sulfur are also examples of grade terms.
What is G grade coal?
Exceeding 3100 and not exceeding 3400. G-14. Exceeding 2800 and not exceeding 3100. G-15. Exceeding 2500 and not exceeding 2800.
Which is the highest quality hard coal?
Anthracite has the highest quality of hard coal. It is also called hard coal, is a hard, compact variety of coal having a submetallic luster. It has the highest carbon content, the fewest impurities, and the highest energy density of all types of coal and is considered as the highest-ranking of coal.
Which is poor quality of coal?
Lignite or brown coal is brown in colour and the lowest quality of coal. The carbon content of lignite ranges from 65-70%, therefore, compared to other types of coal it contains the greatest amount of compounds other than carbon—such as sulfur and mercury.
What is the grading of lignite?
Lignite, often referred to as brown coal, is a soft, brown, combustible, sedimentary rock formed from naturally compressed peat. It has a carbon content around 25–35%, and is considered the lowest rank of coal due to its relatively low heat content.
What is coking grade coal?
Metallurgical coal or coking coal is a grade of coal that can be used to produce good-quality coke. Coke is an essential fuel and reactant in the blast furnace process for primary steelmaking. The demand for metallurgical coal is highly coupled to the demand for steel.
What is GAR in coal?
GAR – Gross As Received. Thermal coal is quoted on a GAR basis, except for Europe/ARA, Richards Bay 6,000 kcal/kg, and Japan and Korea West CIF, which are quoted on a NAR (Net As Received) basis. It provides a rough estimate of the heating value of coal.
What is the geologic position of coal in India?
Coal resource position in India Coal resource position in India Geological Survey of India Early Tertiary (c. 60Ma)near-shore peri-cratonic basins and shelves. Coal occurs in two stratigraphic horizons Permian sediments (c. 290Ma) mostly deposited in Intracratonic Gondwana basins.
Which is the highest rank of coal?
This is anthracite, the highest rank of coal. It is a hard, brittle, and black lustrous coal, often referred to as hard coal, containing a high percentage of fixed carbon and a low percentage of volatile matter.
How many coalfields are there in Gondwana?
Gondwana Coalfields 92° 28° 96° 28° 24° 84° 88° 92° 24° Gangtok Itanagar Dispur Kohima Imphal Aizawl Agartala Shillong Calcutta 100 0 100 km Tertiary coalfields Lower Gondwana coalfields
What type of coal is used in coal-fired power plants?
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. In 2019, about 23 percent of…
