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- W45220454 abstract "The report gives results of tests at seven coal-preparation plants to evaluate the performance of froth flotation cells and dense-medium cyclones in removing ash and sulfur (S) from fine coal (Minus 28 mesh). Flotation circuits tested at four plants showed substantial reductions in coal ash content (64-88%), pyritic S content (48-65%), and sulfur dioxide (SO/sub 2/) emission (expressed as ng SO/sub 2//million Btu; 15-87%) at mean weight recoveries of 11-54%. Raw and clean coal data sets were found to exhibit statistical properties that can be characterized by time series models. The use of low-S coal, PCC, or chemical coal cleaning (CCC) was evaluated for compliance with potential SO/sub 2/ emission limits for industrial boilers. PCC can achieve moderate S reductions in (high S) Northern Appalachian and Midwestern coals, but few of these coals can be cleaned to meet a 516 ng SO/sub 2//million Btu standard. Many Southern Appalachian, Alabama, or Western coals are capable of meeting the standard as mined or after cleaning." @default.
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- W45220454 date "1986-10-01" @default.
- W45220454 modified "2023-09-27" @default.
- W45220454 title "Assessment of coal-cleaning technology: final report. Report for January 1977-January 1981" @default.
- W45220454 hasPublicationYear "1986" @default.
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