Arunachal Coal

The general physical characters of Arunachal Coal are hard and lumpy with vitreous lustre and without apparent lamination. The average analysis figures of all the available coal are: Ash 5-10%,Volatile matter 38 to 42%, Moisture 1.8 to 2.5%, and Sulphur 2 to 3.59%. It is a highly caking coal, the Caking Index varying from 17 to 24 (B.S.S.). The Swelling Index varies from 2.5 to 4 and the Calorific Value is as high as 11,970 to 13,410 B.Th U./1b.

The Namchik coal is physically similar to the Margherita coal, and some of the Namchik coal seams contain comparatively lower percentage of sulphur. Arunachal coal is suitable for Coke manufacturing units for its high caking index. Coaldunia supplies Arunachal coal to brick-kilns, steel industries etc which are located in various places in Northern part of India and Eastern India.

C.F.R.I. has proved the suitability of Margherita coal as coking blends with Raniganj-Jharia coal. Namchik coals and the eastern Margherita coals with their lower sulphur content can also presumably be utilized as Blends.