Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
Studies of the Grinding of Condensed Phosphates. III. The Effect of the Relative Humidity on Grinding of Sodium Trimetaphosphate
Itaru MotookaGenzo HashizumeMasamitsu Kobayashi
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1967 Volume 40 Issue 9 Pages 2095-2099

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Abstract

The effect of the atmosphere, particularly of the relative humidity, on the process of grinding of sodium trimetaphosphate was examined, and the following results were obtained: 1) In the case of grinding in air, as the relative humidity increased, the grinding effect—for example, the time required to reduce trimetaphosphate molecules to one half—decreased in the humidity range from 20 to 60%. 2) In the case of grinding in nitrogen or carbon dioxide gas, the grinding effect was the same as that in air. In view of these results, it may be said that humidity is one of most important factors in the process of grinding sodium trimetaphosphate.

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