Recently, the environment has indicated an increase in price of coking coal. Thus, order to produce high strength coke at a low production cost, application blending technology various types coal is required. Coal dilatation important factor determining strength. It well known that dilation values blended containing semi-soft coals does not match with weighted average value and coal; it denotes...

To improve indirect drying efficiency, the effect of soda residue on characteristics coking coal were studied using a self-made system. A tube furnace was used in dry distillation samples with residue, and coke properties analyzed. The results indicated that has significant influence increase heating rate temperature distribution range 90 to 110 °C. With addition 2%, 5%, 10% rates increased by ...

Samples of PM1 were collected in the surroundings of coking plants located in southern Poland. Chemical fractionation provided information on the contents of trace elements As, Cd, Co, Cr, Hg, Mn, Ni, Pb, Sb and Se in all mobile (F1-F3) and not mobile (F4) fractions of PM1 in the vicinity of large sources of emissions related to energochemical processing of coal during the summer. The determine...

Coal fires have been found to be a serious problem worldwide in coal mining reserves. Coal fires burn valuable coal reserves and lead to severe environmental degradation of the region. Moreover, coal fires can result in massive surface displacements due to the reduction in volume of the burning coal and can cause thermal effects in the adjacent rock mass particularly cracks and fissures. The Wu...