Measurement of mixing in high-consistency pulp suspensions

A method has been developed to measure fibre-scale mixing in high-consistency (30%) pulp. The method employs a tracer dye which is extracted by a solvent after mixing. The method was used to examine two extremes of high-consistency mixing: very high intensity (Frotapulper) and very low intensity (Ho...

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Bibliographic Details
Published in:	Journal of pulp and paper science Vol. 16; no. 4; pp. J130 - J135
Main Authors:	FRANCIS, D. W, KEREKES, R. J
Format:	Journal Article
Language:	English
Published:	Montréal, PQ TAPPI 01-07-1990 Pulp and Paper Technical Association of Canada
Subjects:	Applied sciences chemical variables control Exact sciences and technology mixing Paper, paperboard, non wovens Polymer industry, paints, wood Pulp manufacturing wood processing Wood. Paper. Non wovens Mixing Consistency Fiber Paper pulp Manufacturing Measurement method Aqueous dispersion
Online Access:	Get full text
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Summary:	A method has been developed to measure fibre-scale mixing in high-consistency (30%) pulp. The method employs a tracer dye which is extracted by a solvent after mixing. The method was used to examine two extremes of high-consistency mixing: very high intensity (Frotapulper) and very low intensity (Hobart mixer). It was found that mixing improved significantly with increasing energy per unit mass up to approximately 100 MJ/t and then only modestly with further increases in mixing energy per unit mass. Commercial HC mixers operate in the range from 60 to 110 MJ/t.
Bibliography:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23
ISSN:	0826-6220