METHOD OF SELECTING WOOD FOR CHEMICAL PULPING

METHOD OF SELECTING WOOD FOR CHEMICAL PULPING

A method of selecting bulk wood units for chemical pulping in alkaline conditions which consists of establishing a reference scale by selecting a test sample, measuring the acoustic velocity through each sample units, selecting acoustic velocity bands from t he sample results, processing the sample...

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1. Verfasser: WALKER, JOHN CORRIE FLEMING
Format: Patent
Sprache:eng ; fre
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APPARATUS THEREFOR
FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PAPER-MAKING
PHYSICS
PRODUCTION OF CELLULOSE
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS
REGENERATION OF PULPING LIQUORS
TESTING
TEXTILES
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creator WALKER, JOHN CORRIE FLEMING
description A method of selecting bulk wood units for chemical pulping in alkaline conditions which consists of establishing a reference scale by selecting a test sample, measuring the acoustic velocity through each sample units, selecting acoustic velocity bands from t he sample results, processing the sample units using known chemical pulping processes, measurin g the percentage pulp yield, and then using the measured pulp yields and acoustic velocities to produce a reference scale; measuring the acoustic velocity through each of t he units, comparing the velocity measurement for each unit against the reference scale , and then dividing the tested units into subgroups according to the predicted yield in chemical pulping.
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subjects APPARATUS THEREFOR
FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PAPER-MAKING
PHYSICS
PRODUCTION OF CELLULOSE
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS
REGENERATION OF PULPING LIQUORS
TESTING
TEXTILES
title METHOD OF SELECTING WOOD FOR CHEMICAL PULPING
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