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Title:
ALKALINE SULFITE PULPING METHOD
Document Type and Number:
Japanese Patent JPS5716989
Kind Code:
A
Abstract:
An alkaline sulfite pulping process in which the lignocellulosic material is cooked in a solution containing sodium sulfite is provided. Sodium aluminate is used as a buffering agent. As a result of this, the stability of the pH of the cook and the properties of the pulp are improved. The amount of sodium aluminate as NaOH is from 2% to 8% based on the dry weight of the chips. The pulping process is carried out with the addition of a small dosage of anthraquinone, to produce chemically defibered pulps.

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Inventors:
SOIRE PIIRAYAMEKI
NIIRUSUUERITSUKU BUIRUKOORA
Application Number:
JP7583581A
Publication Date:
January 28, 1982
Filing Date:
May 21, 1981
Export Citation:
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Assignee:
AHLSTROEM OY
International Classes:
D21C3/00; D21C3/22; (IPC1-7): D21C3/02



 
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