Studies on the Kinetics of Dissolution and Transformation of 2MgO2·B2O3·MgCl21·4H2O in Water at 60

Abstract

Abstract: The kinetic of dissolution and transformation process of 2MgO·2B₂O₃·MgCl₂·14H₂O in water at 60 was studied. The solution samples were taken at different time for chemical analysis.The solid phase at different stages was separated and identified.The experimental results show that 2MgO₂·B₂O₃·MgCl₂·14H₂O dissolved incongruently in water. The midproduct is MgO·B₂O₃·4H₂O and Mg(OH)_2.The finaLInversion product is pinnoite, MgO·B₂O₃·3H₂O. The mechanism of dissolution and transformation was proposed and discussed. The kinetic equations of dissolution and crystallization were obtained.

Key words: Chloropinnoite, Dissolution and transformation, Kinetics, Pinnoite

CLC Number:

O611.66

TrendMD:

LIU Zhi-Hong, XIA Shu-Ping, GAO Shi-Yang . Studies on the Kinetics of Dissolution and Transformation of 2MgO₂·B₂O₃·MgCl₂₁·4H₂O in Water at 60[J]. Chem. J. Chinese Universities, 1999, 20(2): 186.

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Studies on the Kinetics of Dissolution and Transformation of 2MgO₂·B₂O₃·MgCl₂₁·4H₂O in Water at 60

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