Properties of semi-coking tar pitches

This paper compares previously produced pitches derived from medium-rank coal semi-coking tars. The study considers methods for obtaining semi-coking tars in different atmospheres. We measured pitch softening temperatures and compared how these values depend on both the original coal grade and tar extraction technology. We produced pitch by extracting tar from Zh-grade coal processed in an inert atmosphere. The carbonization experiments compared semi-coking tar pitch with grade B electrode pitch.