Method of measuring fines in pulp suspensions
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United States of America Patent
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Apr 30, 1985
Grant Date -
N/A
app pub date -
Mar 12, 1982
filing date -
Mar 19, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Methods of measuring the crill content of pulp suspensions are disclosed. The methods include passing a first light radiation, preferably ultraviolet light, having a wavelength comparable to the particle diameter of the crill, through the pulp suspension, passing a second light radiation having a wavelength longer than the first wavelength but shorter than the mean pulp diameter through the pulp suspension, collecting both light radiations after they have transilluminated the pulp suspension, and measuring absorbencies for both of these collected light radiations so that the crill content can be determined therefrom.
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