Studies on the Cooking Control of Sulfate Pulp

It has been very difficult to find the end point of sulfate cooking process before blowing. Generally, the rate of cooking has been discussed only after blowing by measuring the Roevalue or KMnO4-value of blowed pulp. We have found the linear correlations between the Roe-value and the specific condu...

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Bibliographic Details
Published inJournal of the Japanese Technical Association of the Pulp and Paper Industry Vol. 8; no. 4; pp. 266 - 268,331a
Main Authors Azuma, Shojuro, Yorizane, Masahiro, Takeuchi, Nobuhiko
Format Journal Article
LanguageEnglish
Published JAPAN TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTRY 1954
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ISSN1884-4731
1884-4731
DOI10.2524/jtappij1947.8.4_266

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Summary:It has been very difficult to find the end point of sulfate cooking process before blowing. Generally, the rate of cooking has been discussed only after blowing by measuring the Roevalue or KMnO4-value of blowed pulp. We have found the linear correlations between the Roe-value and the specific conductivity of the cooked liquor both in laboratory and in mill. Another linear correlation is found between the rest active alkali in cooked liquor and the specific conductivity. It makes very easy to find the end point of cooking process by watching the micro-ammeter stead of receiver which is used in measuring specific conductivity.
ISSN:1884-4731
1884-4731
DOI:10.2524/jtappij1947.8.4_266