Record Display for the EPA National Library Catalog

RECORD NUMBER: 4 OF 6

Main Title Pressurized Stone Grinding for Mechanical Pulp Production (Tampella). Compendium on Low- and Non-Waste Technology.
CORP Author Economic Commission for Europe (UN), Geneva (Switzerland). Working Party on Low and Non-Waste Technology and Re-Utilization and Recycling of Wastes.;Environmental Protection Agency, Washington, DC.
Publisher 1995
Year Published 1995
Stock Number PB95-233755
Additional Subjects Grinding ; Wood pulp ; Waste management ; Pressurization ; Foreign technology ; Thermomechanical pulping
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB95-233755 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 20p
Abstract
The company changed the construction of the conventional hydraulic stone grinder so that the processed wood is ground in a gas tight space under pressure. Pressurized grinding has been implemented as a batch process. The experiments were carried out with a production scale T 1512 grinder, by altering the machine to perform under pressure. As a result of the trial runs, mechanical pulp of quite a new type was obtained, the strengths of which - especially the tearing resistance - were considerably better than those of the stone-ground wood, corresponding to the strength figures of thermomechanical pulp.