A thermodynamic analysis of the decrepitation process

M. S. Celik; F. Suner

doi:10.1016/0040-6031(94)02112-2

A thermodynamic analysis of the decrepitation process

M. S. Celik^*, F. Suner

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

The decrepitation properties of the two typical boron minerals colemanite and ulexite reveal that, whereas colemanite undergoes decrepitation, ulexite shows no sign of significant fragmentation upon heating. This process enables separation of colemanite from ulexite at temperatures above 400°C. A thermodynamic evaluation of 14 boron minerals has shown that only colemanite exhibits decrepitation. A mechanism involving the temperature differential at the onset of dehydration and decomposition and the resultant enthalpy change is proposed as being responsible for this intriguing phenomenon.

Original language	English
Pages (from-to)	167-174
Number of pages	8
Journal	Thermochimica Acta
Volume	254
Issue number	C
DOIs	https://doi.org/10.1016/0040-6031(94)02112-2
Publication status	Published - 15 Apr 1995

Keywords

Boron mineral
Calcination
Colemanite
Decrepitation
Thermodynamics

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10.1016/0040-6031(94)02112-2

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AB - The decrepitation properties of the two typical boron minerals colemanite and ulexite reveal that, whereas colemanite undergoes decrepitation, ulexite shows no sign of significant fragmentation upon heating. This process enables separation of colemanite from ulexite at temperatures above 400°C. A thermodynamic evaluation of 14 boron minerals has shown that only colemanite exhibits decrepitation. A mechanism involving the temperature differential at the onset of dehydration and decomposition and the resultant enthalpy change is proposed as being responsible for this intriguing phenomenon.

KW - Boron mineral

KW - Calcination

KW - Colemanite

KW - Decrepitation

KW - Thermodynamics

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JO - Thermochimica Acta

JF - Thermochimica Acta

IS - C

ER -

A thermodynamic analysis of the decrepitation process

Abstract

Keywords

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