Abstract
The effects of leaching subbituminous coal samples from Boragolai and Ledo collieries of Makum coal field, Assam, India, with aqueous sodium hydroxide solution on removal of ash and sulphur, were investigated. Mild alkali treatment for relatively short period leads to removal of ash from the coal samples. Increase of alkali concentration and treatment time has negative effect on ash reduction due to formation and accumulation of insoluble sodium aluminosilicate. Boragolai coal is less demineralized than Ledo coal and is attributed to presence of higher amount of alkali-soluble silica and alumina. Alkali treatment leads to over 70% removal of the inorganic sulphur in the coal samples. Desulphurization increases with increase in alkali concentration and treatment time.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
