Thermodynamics and kinetics of boron mud dissolution in sulfuric acid

被引：0

作者：

Ma, Xi ^{[1
,2
]}

Ma, Hongwen ^{[1
]}

Liu, Meitang ^{[1
]}

Yao, Wengui ^{[2
]}

机构：

[1] School of Materials Science and Technology, China University of Geosciences (Beijing)

[2] Blue Sky Technology Corporation

来源：

Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society | 2014年 / 42卷 / 02期

关键词：

Boron mud; Dissolution; Kinetics; Thermodynamics;

D O I：

10.7521/j.issn.0454-5648.2014.02.20

中图分类号：

学科分类号：

摘要：

The raw material boron mud, as a solid waste in a borax factory in Dashiqiao, China, contains some minerals like olivine of 54.0% (in mass fraction, the same below), magnesite of 29.5%, and phlogopite of 5.6%. The thermodynamic analysis indicates that all the minerals in the boron mud powder can be dissolved in sulfuric acid, and the total reaction heat is -150.81 kJ/mol at 298.15 K. The kinetics analysis of dissolving the boron mud powderr at 313, 333 and 353 K for 0.5-4 h reveals that the process of dissolving boron mud in sulfuric acid follows internal diffusion-control and chemical reaction-control procedures.

引用

页码：254 / 260

页数：6

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