Mineral matter identification in some Pakistani coals |
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| Affiliation: | 1. School of Chemistry and Chemical Engineering, Xi''an University of Science and Technology, Xi''an, 710054, Shaanxi, PR China;2. Key Laboratory of Coal Resources Exploration and Comprehensive Utilization, Ministry of Land and Resources, Xi''an, 710054, Shaanxi, PR China;3. Taixi Coal Washery Plant of Shen Hua Ningxia Coal Industry Group Co., Ltd, ShiZuishan, 753000, Ningxia, PR China |
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| Abstract: | Extractions of some of the inorganic elements from Pakistani coal samples were made with ammonium acetate, HCl, HNO3, and acid mixture. The various extracts and the residues were analyzed for the inorganic elements like Cu, Zn, Mn, Fe, Ca, Mg, K and Na. Even though ammonium acetate and acids extracted a considerable amount of inorganic elements, complete demineralization was not achieved. These elements are present both in the form of ion exchangeable cations (extractable with ammonium acetate) and as part of discrete-mineral particles (extractable with acids). |
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