Method for producing a fibrous material

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United States of America Patent

PATENT NO 11535983
APP PUB NO 20190352849A1
SERIAL NO

16307823

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Abstract

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A method for producing a fibrous material from lignocellulose from wood, preferably in the form of wood chips. The lignocellulose material is impregnated with a mixture of sodium sulfite and sodium bisulfite and subsequently undergoes a comminution process in a refiner. Additional chemicals from a mixture of sodium sulfite and sodium bisulfite are directly introduced into the refiner, allowing optimal conditions to be set for both additive flows of chemicals such that the process can be operated in an energetically advantageous manner and corrosion and scale formation in the refiner and subsequent aggregates can be prevented as much as possible.

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Patent Owner(s)

Patent OwnerAddress
ANDRITZ AG8045 GRAZ

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Shagaev, Oleg Vienna, AT 3 5

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