The change of the disperse composition, porous structure and formation of new surfaces of coals of Kiyakty deposit

Abstract

The obtained experimental data show that in the process of mechanical treatment the initial structure of coals transform, macropores are completely destructed and micropore are partially destructed. The increase in activity can be caused by the growth of the external and internal surface due to formation of new pores and opening of earlier inaccessible pares and on account of the change in the physico-chemical structure of newly formed surfaces. In this connection, the porous structure of coals of different stages before and after their dispersion is considered. Analysis of differential curves of particles distribution by sizes and change of specific surface of coal samples showe that after mechanic activation the change of the disperse composition of the coal occurs one to: grinding and aggregation of the dispersed particles.