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Modified oil agglomeration process for coal beneficiation. II. Simultaneous grinding and oil agglomeration
Author(s) -
Trass Olev,
Bajor Oliver
Publication year - 1988
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450660215
Subject(s) - economies of agglomeration , grinding , beneficiation , agglomerate , coal , mill , waste management , process (computing) , environmental science , materials science , process engineering , metallurgy , engineering , chemical engineering , mechanical engineering , composite material , computer science , operating system
The spherical oil agglomeration technique developed at the National Research Council of Canada (NRC) for cleaning and recovering very small coal particles can be simplified by combining the grinding and agglomeration steps such that the excess energy expended while grinding is used for mixing and agglomeration. Experiments with the Szego mill, which is able to handle the pasty agglomerates, have shown that ash removal from Minto (New Brunswick) coal is comparable to that obtained with the usual NRC process. The generally flaky products of the Szego mill allow better ash liberation, and the presence of oil enhances grinding performance. Favourable oil‐coal‐water ratios have been established. Major savings in equipment and operating costs are possible with the combined process.