Parc d’ activités Forbach Ouest, 57600, Forbach France

Proximate and mechanical analysis of coals and cokes


  • Ash content
  • Volatile matter content
  • Moisture content
  • Size analysis by sieving
  • True/apparent densities and open porosity
  • Hardgrove Grindability Index (HGI) for coals
  • Shales content in coals

Measurement of coal rheological properties


  • Free Swelling Index (FSI)
  • Contraction and dilatation with Audibert-Arnu dilatometer (Ruhr)
  • Contraction and dilatation with High Temperature Dilatometer
  • Gieseler fluidity
  • Solidification temperature of semi-coke
  • Permeability measurement in thermal gradient (mini oven)

Coal petrography (International Committee for Coal and organic Petrology accreditation)


  • Vitrinite random reflectance
  • Maceral analysis
  • Coke optical texture

Coal oxidation detection


  • Relative degree of oxidation in bituminous coal by alkali extraction
  • Relative degree of oxidation in Abrasion drum
  • Petrographic Stain test to detect oxidation

Laboratory Jenkner retort (1kg)


  • Mass of carbonisation (single coals or coal blends)
  • Determination of mass yield of coke, moisture, tar, ammonia, hydrogen sulphide
  • Determination of BTX and volume yield of gas evolved during carbonisation
  • Study the influence of additives
  • Study the influence of alternative carbon material

Coke reactivity


  • Coke Reactivity Index (CRI)
  • Coke Strength after Reaction (CSR)