World over large reserves of low grade coals are available. The use of low-grade coal in
various industries like power plants, metallurgical plants, cement units, etc. creates …

Limited availability and large industrial demands of high-grade coals have forced many coal-
dependent industries to shift their preference towards low-grade coals to meet the feedstock …

Blended fuels of run-of-mine (ROM) coal and untreated rice straw (RS) have not yet been
used for fuel applications due to their poor fuel performance and the release of pollutants …

Coal desulfurization prior to combustion, coking or gasification is beneficial for both the
upgrading of quality of commercial coal and the protection of the environment. The sulfur in …

Coal still remains an important source of power generation world over. Along with its usage,
comes unwanted generation of noxious gas emissions, toxic metal releases into wastewater …

In the recent past, researchers have paid much attention to HF, HNO3, and HCl acids for
demineralization of various types of coals with the assumption that they bring negligible …

Low ash clean coal was produced from Indian coking coal through microwave irradiation or
ultrasonication followed by solvent extraction in N-methyl-2-pyrollidone (NMP) containing …

Chemical leaching is one of the most efficient methods for improving low-grade coal due to
its ability to remove both inorganic and organic minerals economically. This study examined …

The extractions of potassium value from feldspar via roasting and leaching route was
studied with a focus on the effects of the roasting time, temperature, additives, and particle …

With the supply restriction from traditional rare earth deposits, alternative sources of rare
earth elements (REEs) such as coal are being studied. The United States National Energy …