天然矿物的改性

Proceedings of the 9th International Scientific and Practical Conference of Students, Post-graduates Modern Techniques and Technologies, 2003. MTT 2003. Pub Date : 2003-04-07 DOI:10.1109/SPCMTT.2003.1438183

A. Godimchuk, A.R. llyin

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引用次数: 0

摘要

本工作的目的是分析天然矿物随温度升高的结构和化学变化。选取硅酸盐和碳酸盐岩中的天然钙镁矿物进行研究。“石英-硅灰石-大理石-透辉石-白云石-透闪石”系列矿物，可以了解从SiO2(100%)到CaCO3(100%)的物相组成变化和结构原理。电镜结果表明，热处理导致透闪石晶体针状结构的破坏。差热分析也证实了透闪石组分的变化。830℃时的吸热效应和试样质量下降至12%的同时证实了方解石的崩解过程。

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The modification of natural minerals

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.

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

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