A proximate analysis of coal was conducted with TG-DTG-DTA thermal analysis technology. The analysis results with good repeating can meet the test requirement of the standard method.

Relationship between the surface hydrophobicity contact angle and proximate, ultimate analysis of coal was studied by using relative atomicity concept.

The paper discusses the coal petrography and proximate analysis of the vertical systematical samples of the Honso and Joso coal beds in the Miike coal field.