Question: Is code for proximate analysis of coal?

What is proximate analysis of coal?

Proximate analysis is formally defined by a group of ASTM3 test methods and is an assay of the moisture, volatile matter, fixed carbon, and ash content of a coal sample. … The moisture content is determined by the mass loss that a coal sample undergoes after it has been heated to 110 °C under a N2 atmosphere.

Is coal a code test?

1.1 This standard (Part 1 ) prescribes the methods of test for coal and coke relating to proximate analysis including determination of moisture under different conditions. … Besides, the laboratory samples to be used for the analysis of coal and coke, special samples are recommended for moisture.

How is coal analyzed by proximate analysis?

Proximate analysis consists of determination of ash content, moisture content, volatile matter, and fixed carbon on an as-received basis. … Inherent moisture content is determined by heating an air-dried coal sample at 105°–110°C (221–230°F) under specified conditions until a constant weight is obtained.

What are the two types of analysis of coal?

There are two methods to analyze coal which are called proximate analysis and ultimate analysis.

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What are the methods of coal analysis?

The methods for the determination of the total moisture in coal have been placed into the following categories: thermal methods, a desiccator method, distillation method, chemical methods, and electrical methods.

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.

How do you calculate moisture in coal?

Total moisture =X+Y*(1-X/100), Where, X: percentage loss in mass of original in air-drying, Y: percentage loss in mass of air dried sample on oven drying.

What is the GCV of coal?

The gradation of non-coking coal is based on Gross Calorific Value (GCV), the gradation of coking coal is based on ash content and for semi coking /weakly coking coal it is based on ash plus moisture content, as in vogue as per notification.

Coal Grades.

GCV BAND (K.Cal./Kg.) GRADE
Exceeding 2200 and not exceeding 2500 G-17

What is top size of coal?

The gross sample collected at the Delivery Point will reduced to laboratory samples in the size of 12.5mm for total moisture and 212 microns IS Sieve (Top Size) for Testing and Analysis. The Preparation of Lab samples is done at Coal company preparation rooms located at the dispatch area.

What are the three types of coal analysis?

Palynology: identifies fossil spores and pollens in coal and shale for correlation and reconstruction of original coal-forming mires. Petrographic analysis: examines microscopic components of coal. Proximate analysis: determines moisture, volatile matter, ash yield, and fixed carbon content in coal.

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What is the main function of proximate analysis of 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.

What is ultimate analysis of fuel?

Ultimate analysis is defined as the determination of carbon, hydrogen, nitrogen and sulfur in a wide type of organic and inorganic samples, both solid and liquid. … Heating value can be carried out in all types of combustible samples such as: biofuels, minerals, solid and liquid ones, and recovered solid fuels.