Coal Testing Services

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National Testing Lab 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.

The results of Coal testing are utilized mainly for characterization, commercial grading or assigning ranks, and deciding the utilization for different purposes. There are basically two types of analysis conducted on coal: one is the ‘Proximate Analysis’ and the other is ‘Ultimate Analysis’. These tests determine different parameters, and the results from Proximate Analysis determine the rank of Coal and some important indicators related to the commercial value of coal, like heating/Calorific value and application in boilers.

Some of the Common Tests conducted on Coal include :

• 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
• Porosity
• Density
• Angle of Repose
• Crucible Swelling Index/Free Swelling Index

Major Equipments Used :

• Carbon & Hydrogen determination apparatus
• Proximate Analyzer
• Ash Fusion Temperature apparatus/Ash Fusion Tester