TAPPI Visual Inspection Charts
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My TAPPI Story: Naomi Gehling
Ari Ämmälä, Jouko Niinimäki--Extensive experimental work was performed with a full-scale two-stage pressure screen connected to an industrial TMP process. The aim was to provide an insight into the means of controlling a screening process. The experiments showed that with a given screen plate design, the screening result was almost exclusively dependent on mass and volumetric reject rates. The screening result could not be affected by using different combinations of operating parameters (feed consistency, rotor tip speed and slot velocity) if the mass and volumetric reject rates were kept constant. These findings may offer new guidelines for screen room control strategies.
Experience the Power of Publications in 2026
Sponsored by the Recovery Boiler Program R&D Subcommittee of the American Forest & Paper Association (AF&PA) and published by TAPPI Press.
The best-selling text to introduce the entire technology of pulp and paper manufacture.
A project of the Yankee Dryer Safety & Reliability Committee.
TAPPI Press offers some of the most in-depth resources and references for the forest products and related industries.
Available for Purchase – Conference Proceedings
TAPPI maintains a record of key conference papers, presentations, and other conference publications, available for purchase in a variety of formats.
Control of Pressure Screening by Mass and Volumetric Reject Rates, 2001 Pulping Conference Proceedin