How do you test for coal?
How do you test for coal?
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 test ash in coal?
Ash yield is measured to determine how much material remains (called ash residue) after a coal is combusted. Ash yield is measured directly in an automated proximate analyzer or ashing furnace. Results are presented in weight percent. The ash yield of a coal sample is the amount of material remaining after combustion.
How many types of coal analysis are there?
Coal is classified into four main types, or ranks: anthracite, bituminous, subbituminous, and lignite. The ranking depends on the types and amounts of carbon the coal contains and on the amount of heat energy the coal can produce.
How do you test coal GCV?
GCV= 7115.197 – 123.971*M – 81.3121*A + 20.7421*FC, Where GCV in kcal/kg and moisture, ash, fixed carbon in air dried percentage basis. calorific value determined by CIMFR formulae, regression, model and ANN model with that of the experimentally determined GCV has been presented in the figure below.
How do you analyze the coal sample?
The commonly used instrumental techniques for routine coal analysis mostly involve spectroscopic methods, such as x-ray spectroscopy, electron microscopy, atomic spectroscopy, mass spectrometry and neutron activation analysis.
What are the characteristics of a good quality coal?
Good burning characteristics – Complete combustion without agitation. Good grindability – sometimes it is needed to grind coal before burning. Good coal should not cause high abrasion on the machine. High ash softening temperature – High Ash softening temperature lower the risk of slagging.
What type of coal has the highest sulfur content?
Anthracite
Anthracite is low in sulphur and high in carbon. It is the highest rank of coal.
Does Indian coal has high ash content?
India’s domestic coal reserves have a high ash content—up to 40 to 45 percent. Used along with the use of electrostatic precipitators, FGDs can address particulate pollution from coal-fired power plants caused in part due to the high ash content.
What is the best grade of coal?
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.
What kind of tests are done on coal?
Spectro Analytical Labs Ltd. conducts testing of Coal, Coke and other fuels as per various national and international standards in the most scrupulous manner ensuring flawless accuracy in the test results. Some of the Common Tests conducted on Coal include
What does ALS stand for in coal testing?
ALS is recognised globally for its expertise in managing coal testing, resource analysis, and evaluation programs. ALS assesses and ranks your coal product physical handling, blend propensity, and behaviour in application to give an accurate picture of marketability and value-in-use.
How is the behaviour of coal ash analysed?
When the coal is thoroughly burnt, ash material is quantified as a percentage of the original weight and this output is analysed. The behaviour of coal’s ash residue at high temperature is a critical factor in selecting coals for steam power generation.
What makes ALS the best quality testing company?
ALS couples an extensive laboratory network and industry leading capabilities in quality testing, with highly skilled analysis and superintending personnel. ALS recognises that our customers need to be comfortable that they are getting the right result every time. Have a question? Need a quote?