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Pulverizing lignite in a ring roller mill.

Authors
Ellman-RC; Dockter-L; Belter-JW
Source
Grand Forks, ND: U.S. Department of the Interior, Bureau of Mines, RI 7631, 1972 Jan; :1-25
Link
NIOSHTIC No.
10008861
Abstract
The Bureau of Mines studied lignite pulverization in a laboratory ring-roller mill. Both moisture content and the source of lignite were found to be important factors in pulverizer operation. Reduction of moisture content increased capacity and reduced power consumption, but predrying is more effective than in-the-mill drying in improving pulverizer operation. A combination predrier-crusher system produced significant improvements but other efforts to improve in-the-mill drying in the test mill were unsuccessful. Pulverization of frozen lignite was found to seriously reduce pulverizer capacity and increase power requirements.
Publication Date
19720101
Document Type
IH; Report of Investigations
Fiscal Year
1972
NTIS Accession No.
PB-210167
NTIS Price
A03
Identifying No.
RI-7631
NIOSH Division
GFER
Source Name
Grand Forks, ND: U.S. Department of the Interior, Bureau of Mines, RI 7631
State
ND
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