D - Textiles – Paper – 21 – B
Patent
D - Textiles, Paper
21
B
D21B 1/02 (2006.01) D21C 1/06 (2006.01) D21C 1/10 (2006.01) D21H 11/04 (2006.01) G01N 29/07 (2006.01) G01N 29/44 (2006.01) G01N 33/46 (2006.01) G01N 33/34 (2006.01)
Patent
CA 2371519
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 the sample results, processing the sample units using known chemical pulping processes, measuring 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 the 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.
Bereskin & Parr
Canterprise Limited
LandOfFree
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