Grinding of coal in the presence of vapours of organic compounds |
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| Authors: | Bronis&#x law Buczek, Andrzej Czapli&#x ski, Leszek Czepirski,Stanis&#x law Ho&#x lda |
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| Affiliation: | Institute of Energochemistry of Coal Physicochemistry of Sorbents, University of Mining and Metallurgy, Cracow, Poland |
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| Abstract: | The effect exerted by the sorption of vapour of several chemical compounds on the crushing of bituminous coal was investigated. Air-dry samples of a low-rank coal (82.7 wt%C) a coking coal (87.0 wt%C) and a high-rank coal (91.7 wt%C) were saturated with methanol, ammonia and benzene vapour for 100 h, crushed in a ball-mill, and subjected to sieve analysis. Sorption of methanol causes a marked increase of the crushability of all coals tested. Coal crushability increasing with increase of rank. The results have been interpreted according to the polymeric model of coal structure. |
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| Keywords: | coal grinding sorbents |
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