The modification of natural minerals

Author

Godimchuk, A.Y. ; llyin, A.R.

Author_Institution

High Voltage Res. Inst., Russia

fYear

2003

fDate

7-11 April 2003

Firstpage

177

Lastpage

179

Abstract

The aim of the present work was to analyze the structural and chemical transformations in natural minerals with an increase in temperature. The natural calcium-magnesia minerals of silicate and carbonate rocks were selected for study. The series of minerals "quartz-wollastonite-marble-diopside-dolomite-tremolite" allows to learn principles of phase composition change and structure from SiO₂ (100%) up to CaCO₃ (100%). The results of EM have shown, that heat treatment lead to destruction of needle-like structure of tremolite crystals. The dates of DTA also testified as changes in tremolite composite. Endothermic effect at 830 degC and simultaneous decreasing of sample mass to 12% testified as process of calcite disintegration.

Keywords

heat treatment; quartz; rocks; surface treatment; CaCO₃; SiO₂; calcite disintegration; chemical transformations; endothermic effect; heat treatment; natural calcium-magnesia minerals; quartz-wollastonite-marble-diopside-dolomite-tremolite; tremolite composite; Chemicals; Crystals; Electrons; Heat treatment; Heating; Impurities; Iron; Minerals; Surface treatment; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Modern Techniques and Technologies, 2003. MTT 2003. Proceedings of the 9th International Scientific and Practical Conference of Students, Post-graduates and Young Scientists

Conference_Location

Tomsk

Print_ISBN

0-7803-7669-2

Type

conf

DOI

10.1109/SPCMTT.2003.1438183

Filename

1438183