Studies on Magnesium-base Sulphite Pulping
نویسندگان
چکیده
منابع مشابه
Deresination Options in Sulphite Pulping
Three methods for improved deresination of sulphite pulps were evaluated, namely, alkaline washing, enzyme treatment, and pulp fractionation. Alkaline washing appears to come at a high cost, because caustic is expensive and affects cellulose chain length, as indicated by lower viscosity of the pulps. Thus this is not a viable option for pulps that are sensitive to changes in viscosity. Enzyme t...
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Statistics indicate that US capacities for acid and neutral suiphite pulping are presently at about the same level, running about 10000 short tons daily for each type of pulp. It is projected that acid suiphite will remain at about this level over the next ten years while the production of neutral suiphite will probably double. Most of the spent liquor from the operating mills is burned with or...
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although the prior formation of an unstable intermediate is not excluded. 4. The poor conversion ofesters ofD-galacturonic acid into compounds ofL-galactonic acid appears to be due mainly to the reversible inhibition of the enzyme during the course of the reaction, and to a lesser extent to the instability of the galactonic acid derivative formed. The substance responsible for the inhibition of...
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Paper sheets from Iranian olive tree produced by soda, sulphite and kraft pulping.Then the influence of pulp beating on properties of paper sheets was studied. Kraft pulp exhibited the highest holocellulose/yield -cellulose/yield ratios and the sulphite pulp the soda pulp the highest lignin/yield ratio. Paper sheets from kraft with the breaking length 5851 m, stretch 4.61%, Burst index 4.48 KN/...
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Magnesium Products Limited has been very successful in converting from machining magnesium die castings dry to machin'ng with oilin-water emulsions, more commonly called water soluble oils. When machining with water soluble coolants one can expect; 1) excellent fire protection; 2) improved tool life; 3 ) ease of housekeeping, and 4 ) improved productivity. Problems previously encountered with w...
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ژورنال
عنوان ژورنال: JAPAN TAPPI JOURNAL
سال: 1968
ISSN: 0022-815X,1881-1000
DOI: 10.2524/jtappij.22.29