Dewatering of refined, bleached hardwood kraft pulp by gravity, vacuum, and centrifugation with applied pressure Part 1. Physical and ionic effects

Document Type

Article

Publication Date

10-1-2007

Abstract

Three types of dewatering tests were performed with refined, bleached hardwood kraft suspensions. A modified water retention value (MWR V) test was used, with pressure applied to damp plugs of fibers during their centrifugation. Refining levels and drying conditions had dramatic and consistent effects on dewatering rates by gravity (freeness tests), with the application of vacuum, and also the MWRV tests. Effects of drying were roughly equivalent to a reversal of refining effects. Though changes in the pH and salt concentration of the aqueous solution had large effects on dewatering by gravity or vacuum, these chemical conditions did not affect MWRV results to a significant extent.

Identifier

36248979101 (Scopus)

Publication Title

O Papel Brazil

ISSN

00311057

First Page

74

Last Page

87

Issue

10

Volume

68

This document is currently not available here.

Share

COinS