Conversion of paper mill sludge into pulp substitute and papermaking clay. Phase 2. Final report

Technical Report · Tue Dec 01 00:00:00 EST 1992

OSTI ID:5844075

Maxham, J V

The objective was to develop technology to convert the fiber fines/clay fraction of paper mill sludge or deinked white office wastepaper into a papermaking filler product after the long fiber fraction had been extracted, cleaned, and bleached to produce a papermaking pulp product. The goal was to increase the brightness and decrease the specific resistance of the fiber fines/clay samples. A simple, low cost, and potentially patentable technique was discovered that significantly lowered the specific resistance, and a simple bleaching technique compatible with the technique to lower the specific resistance was discovered. However, the brightness gains were often insufficient, even at high bleach dosages and fiber fines/clay samples derived from deinked white office wastepaper were not susceptible to bleaching. No commercially viable technique was discovered to remove the very fine ink particles from such samples. Nevertheless, a filler product suitable for paperboard and some fine papermaking applications where a high brightness filler is not required can be produced that should have acceptable drainage characteristics on a paper or board machine.

• Research Organization: Prime Fiber Corp., Appleton, WI (United States)
• OSTI ID: 5844075
• Report Number(s): PB-94-105467/XAB; CNN: NSF-ISI-8920723
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
SLUDGES
RECYCLING
BLEACHING
BRIGHTNESS
BUSINESS
COST ESTIMATION
DRAINAGE
PAPER INDUSTRY
PARTICLES
SAMPLING
WOOD FUELS
ENERGY SOURCES
FUELS
INDUSTRY
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
WOOD PRODUCTS INDUSTRY
320305* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Industrial Waste Management