The contribution of different fractions of fines to pulp drainage in mechanical pulps

被引：0

作者：

Liu, XA ^{[1
]}

Whiting, P ^{[1
]}

Pande, H ^{[1
]}

Roy, DN ^{[1
]}

机构：

[1] Univ Toronto, Fac Forestry, Toronto, ON M5S 3B3, Canada

来源：

JOURNAL OF PULP AND PAPER SCIENCE | 2001年 / 27卷 / 04期

关键词：

drainage; fines; golloids; dissolved solids; thermomechanical pulps; high yield pulps; gel; dispersants;

D O I：

暂无

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

The relevant contribution of fines, colloidal and dissolved materials to pulp drainage were evaluated by various types of pulp with whole fines and coarse fines: the interactions among those components were investigated as well. It was found that drainage was impaired more by the presence of ultra-fines than by the dissolved pulp components in the white water. The interactions occurred between thermomechanical pul (TMP) coarse fines and ultra-high-yield sulphite pulp (UHYS) ultra-fines, which is a major cause of poor drainage. A physical mechanism in which sulphonated microgels adhere to the surface of TMP fines, and cause interparticle repulsion and fines dispersion, is proposed.

引用

页码：139 / 143

页数：5