高濃度抄紙技術の研究開発 (第1報)
パルプの流動及びフロック化特性の評価
1988 年 42 巻 3 号 p. 287-294
詳細
1988 年 42 巻 3 号 p. 287-294
An instrument termed concentric cylinder viscometer has been made for evaluating the flowing characteristics and the fibre flocculation of pulp suspension.
Fluidity of pulp suspension is estimated from the relations between the tangential velocities and the wall shear stresses exerted on the surface of inner cylinder. On the other hand, fiber flocculation is measured by detecting variation in the intensity of light transmitted through the flowing pulp suspension.
This paper presents the applications of the instrument to the measurement of fluidity and flocculation in various consistencies of bleached hardwood and softwood sulfate pulp suspensions.
Furthermore, beating effects on the flocculation and the effects of deflocculant (anionic polyacrylamide) on the fluidity and flocculation of 3% hardwood pulp suspension are briefly described taking account of high consistency forming.
