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Low chemical APMP^(TM) pulps produced under pressurized refining conditions from spruce and hemlock/lodgepole pine chips were investigated to determine potential benefits in upgrading existing newsprint mills. A brightness gain of 10 to 13 points was achieved with less than 2% hydrogen peroxide. The alkaline peroxide impregnated pulps had improved tear, bonding strength, bulk and shive content compared to the baseline TMP pulps. The hemlock/lodgepole pine furnish demonstrated a 300 to 350 kWh/ODMT savings in energy with an alkaline peroxide pretreatment.
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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.
Low Chemical Alkaline Peroxide TMP - A Means of Upgrading Newsprint Mills, 1992 Pulping Conference P