Abstract
A comprehensive study of the material composition of clay raw materials of the al-Najaf field (Iraq), which belongs to the sedimentary deposits of the Dammam formation, is conducted. The features of the chemical and phase composition of the rock are determined using x-ray phase, energy dispersive, microrentgenospectral, electron microscopic and thermogravimetric methods of analysis. The presence of titanium as an impurity element is detected in the studied clay along with the typical element composition of aluminosilicates using energy-dispersion-spectral analysis. At the same time, a high total content of oxides of alkaline and alkaline earth metals (Cao, Na2O, K2O) is recorded, amounting to more than 5.0 wt. %. It is found that the sample under study has a polymineral composition, the main rock-forming minerals are kaolinite, illite and montmorillonite. The total percentage of the clay component is more than 82 wt.%. Content of clay particles belonging to high-and medium-dispersed fractions (size 10 microns or less) it is more than 60% by weight. The average size of the particles composing the studied clay is about 32.0 microns. Based on the data on the chemical, mineralogical and granulometric composition of the sample, a conclusion is made about the potential suitability of the studied clay as a sorption-active material, as well as in the production of Portland cement and coarse ceramics.
Highlights
Проведено комплексное исследование вещественного состава глинистого сырья месторождения Аль-Наджаф (Ирак), принадлежащего к осадочным отложениям Даммамской свиты
A comprehensive study of the material composition of clay raw materials of the al-Najaf field (Iraq), which belongs to the sedimentary deposits of the Dammam formation, is conducted
It is found that the sample under study has a polymineral composition, the main rock-forming minerals are kaolinite, illite and montmorillonite
Summary
Проведено комплексное исследование вещественного состава глинистого сырья месторождения Аль-Наджаф (Ирак), принадлежащего к осадочным отложениям Даммамской свиты. В то же время зафиксировано высокое суммарное содержание оксидов щелочных и щелочноземельных металлов (СаО, Na2O, K2О), составляющее более 5,0 масс. В настоящей работе объектом исследования является глинистое сырье, отобранное из месторождения Аль-Наджаф, Ирак. В рамках представленного исследования проведен комплексный анализ вещественного состава, текстурных и структурно-морфологических характеристик глинистой породы месторождения Аль-Наджаф с целью оценки потенциальной пригодности в качестве сорбента для очистки сточных вод.
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