The need of the hour in today’s world is to globally phase out coal as a fuel source due to its high pollution potential. The results of our earlier study indicating improved theoretical thermal efficiency of bagasse when mixed with waste oil (BWO mix) in the ratio 4:1 are considered and the related technical aspects are compared with that of coal and bagasse. It is found that bagasse cannot re...

2 Research method Different methods of coal processing into fuel [1, 6, 12] usually require its intensive comminution. Such situation needs the creation of new technologies for coal micronization [4, 11, 17] that enlarge specific surface of coal micro particles what finally intensifies burning process of such coal dust. Some interesting effects of water-coal mixture ensure waterjetting technolo...

There are many coal seams in high-gas mining area of China. The permeability is low. The gas extraction from the original coal seam is difficult and the commercial value is little. The conception of the safe high-efficient exploitation of coal and gas is put forward in this article. It changes the conventional exploitation sequence that is from the upper to below. When we exploit coal seams, th...

The permeability of coal is a critical parameter in estimating the performance of coal reservoirs. Darcy’s law describes the flow pattern that the permeability has a linear relationship with the flow velocity. However, the stress induced deformation and damage can significantly influence the gas flow pattern and permeability of coal. Coals from Songzao coalfield in Chongqing, southwest China we...

With the recent concern over depletion of high-quality coking coal used for coke production, it is desirable to develop a simple method convert low-grade coals with poor properties into coals. In this study we have focused on possibility that polymerization reactions caused by recombination coal-inherent radicals may occur when heated, which can deteriorate softening and melting coal. Aiming at...

introduction the alborz structural zone in northern iran is the host of a number of important coal deposits. the gheshlagh coal mine is one of them, which is located 35 km southeast of azadshahr. coal bearing strata in the gheshlagh mining district occur in the middle part of the lower jurassic shemshak formation which consists mainly of shales, siltstones and sandstones. the geshlagh coals hav...

Organic-rich Carboniferous shales with associated coal seams, from the Bacia Carbonífera do Douro-Beira (north Portugal), have been studied by TEM as well as by a variety of other methods. NH4 and K micas and berthierine form small subparallel packets of a few layers separated by lowangle boundaries. Oneand two-layer ordered polytypes, with some spot enlargement typical of minor disorder, occur...

Most studies on sulfur bioleaching from coal depend on an autotrophic microorganism with a low growth and a long leaching time. For this reason, heterotrophic heat and acidic pH-resistant Alicyclobacillus was used as the growing and resting cells for the sulfur and iron removal from coal. The results obtained were analyzed by XRF. The data showed that 26.71% of sulfur was removed by Alicyclobac...