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- W4250486687 abstract "Mianwali coal was upgraded using flotation process followed by acid leaching. For flotation tests parameters such as pH, impeller speed, solids in pulp and particle size were investigated. The results from flotation study were as: 54.1% increase in total carbon, 28.9% reduction in ash and 33.4% reduction in sulphur. Leaching tests on flotation concentrate were carried out to further improve the grade of coal. Test conditions for leaching were: acid concentration, leaching time, stirring rate and temperature. At optimum leaching conditions ash was reduced by 39.2% and sulphur by 59.76%. As a result of two cleaning techniques, overall reduction in ash and sulphur were found to be 57.38% and 74.2% respectively. Final ash and sulphur contents in clean coal were found to be 15.2% and 1.65% respectively. The clean coal, thus obtained can preferably be used in power plants and cement industry in the country. [Received: October 26, 2016; Accepted: May 24, 2017]" @default.
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- W4250486687 date "2019-01-01" @default.
- W4250486687 modified "2023-09-23" @default.
- W4250486687 title "Upgradation of Mianwali coal using froth flotation and nitric acid leaching" @default.
- W4250486687 doi "https://doi.org/10.1504/ijogct.2019.099173" @default.
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