Properties of Borachak seam coal and their deterioration on storage in open stack

A feasibility study on the low temperature carbonisation potentiality of the weakly caking high volatile Borachak seam coal being produced in Borachak Incline of the Chinakuri colliery (M/s. Bengal Coal Co. Ltd.) was undertaken at CFRI. In this context, an assessment was made of in situ physical/chemical properties of the full thickness of the seam (Pl-1) from that area. the Study also included detailed tests on the pattern of variaton of coal properties on weathering particularly in respect of caking property, swelling index, LTC tar yields, gas yields etc. (Figs. 1, 2 etc.) for the periodically drawn samples from 75-25 mm coal stack (500 tonnes) and minus 25 mm coal stack (60 tonnes) prepared at the colliery site