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The charging process consists of moving a hopper vehicle to the charging position, charging coal (e.g. with belt feeder or screw feeder), then waste plastics, and finally covering with coal, and moving to the coke oven. Bal~z, P. et ,l. Fuel, 2001, 80, (5), 665-671. The aim of this work has been to point out the possibility of using GACL process for chemical cleaning of brown coal Nov~ky (Slovakia) and Pittsburgh No. 8 coal. Simultaneous grinding and aqueous chemical leaching, which is the principle of the process, reduces the inorganic and inorganic sulfur content in both coals. Dearsenification nearly up to 96% is detected in GACL-treated samples of Nov~ky coal. The possibility of enhancing the recovery of humic acid as a consequence of GACL treatment is demonstrated. The process under study works under atmospheric pressure, temperature of 90ยฐC and NaOH consumption, which is six times lower compared with the MCL process. Further research is needed to minimize the wear of grinding media and to improve the washing step.
02/00753 Chemical treatment of coal by grinding and aqueous caustic leaching
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Least square analysis of the X-ray absorption near edge structure (XANES) region of sulfur K edge X-ray absorption fine structure (XAFS) spectra can provide a quantitative analysis of both the organic and inorganic functional forms of sulfur in coal. In the current article, this method is applied to
0 1 Solid fuels (preparation) compared to the use of water-only for the treatment of an easy-to-clean Illinois No. 6 fine coal sample. For a difficult-to-clean coal, the mass yield improvement was significantly greater at nearly 20% by wt. From the treatment of four different coal samples, organic e