Explain Proximate analysis for the determination of coal sample
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A typical proximate analysis includes the moisture, ash, volatile matter, and fixed carbon contents.of tests, collectively called the proximate analysis, that determine the moisture content, volatile matter content, ash content, fixed-carbon content, and calorific value of a coal .Proximate analysis covers the determination of moisture, volatile matter, fixed carbon, and ash in coals and cokes, and is used to establish the rank of coals, to show the ratio of combustible to incombustible constituents, or to provide the basis for buying/selling, and otherwise evaluating coal for various purposes.Proximate analysis is one of the first analyses performed on coal after mining. The test involves heating the coal under various conditions for variable amounts of time to determine moisture, volatile matter, fixed carbon, and ash yield.
Answer:
Proximate analysis is the measurement of fuel burn in solid state, gaseous state and the ash produced after that.
Explanation:
Proximate analysis
- This method is used in various international standards.
- In proximate analysis the measurement of moisture, volatile matter, ash, and carbon produced at the end,
- This method has been widely used from over 160 years.
- In 1841, Lea used this method to check the quantity changes of South Anthracite Field in Pennsylvania.
- But proximate analysis is not suitable as a rank indicator at low ranks because pf the divergent material groups. Aliphatic liptinite macerals contributes more to the volatile matter than it contribute to aromatic vitrinite and inertinite macerals.
- In case of vitrinite rich coals, ASTM rank classification is used.
- Rank parameter of volatile matter is used only when there is a high volatile bituminous boundary.
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