Coal sulfur

What is Coal sulfur?

Coal sulfur meaning Coal sulfur occurs in three forms: organic, sulfate, and pyritic. Organic sulfur is an integral part of the coal matrix and cannot be removed by conventional physical separation. Sulfate sulfur is usually negligible. Pyritic sulfur occurs as the minerals pyrite and marcasite; larger sizes generally can be removed by cleaning the coal.


reference: Glossary – U.S. Energy Information Administration (EIA)