Chemical Testing

• Coal Testing
  TESTING PARAMETERS OF COAL
  Proximate Analysis of Coal as per IS 1350 part-01
  Moisture (Total Moisture, Inherent Moisture)
  Volatile matter
  Ash%
  Fixed Carbon (FC)
  
  A. Moisture % The Moisture in Cole determined by following method, Heat the empty vessel at 108 ± 2° C and weigh after cooling for 20 minutes. Crush the air- dried material (see 6.4.1.3) to pass 2'90 mm IS sieve. Spread uniformly in the weighing vessel about 10 g of the crushed material and weigh. Heat the uncovered vessel in the drying oven at a temperature of 108 ± 2°C until there is no further loss in mass. This normally takes 1'5 to 3 hours. Replace the cover, cool in a desiccator for 20 minutes and weigh.
  
  B.Volatile Matter % The volatile matter determined by the method consists of heating out of contact with air a weighed quantity of air-dried sample of coal or coke at the temperature of 900 ± 100e for a period of seven minutes. Oxidation has to be avoided as far as possible.
  
  C. Ash % The Ash % determined by The sample is heated in air to 500°C in 30 minutes, from 500 to 815°C for a further 30 to 60 minutes and maintained at this temperature until constant in mass.
  
  D.Fixed Carbon% Fixed carbon is arrived at after deducting from 100 the sum of moisture, ash and volatile matter contents expressed as percent, that is. Fixed carbon, F-100-(Mo+A+V) or Fixed carbon == Residue after volatile matter test minus ash.