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首页> 外文期刊>Scandinavian Journal of Metallurgy >An investigation of the mineralogical properties of chemical grade chromite minerals
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An investigation of the mineralogical properties of chemical grade chromite minerals

机译：化学级铬铁矿矿物的矿物学研究

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摘要

The chemical grade chromite ores are used extensively for the production of sodium chromate. The mineralogical properties, which pose a major limitation in utilising a wide variety of chemical grade chromite ores from different origins, determine the yield of sodium chromate in the soda-ash roasting process. In this paper, the mineralogical properties of chemical grade chromite ores from 5 different countries, namely South Africa, India, Philippines, Indonesia and China are reported. The physical and chemical properties of the chromite ores were investigated using the atomic absorption spectroscopy (AAS), X-ray fluorescence spectroscopy (XRF), X-ray diffraction analysis (XRD), scanning electron microscopy (SEM) and electron probe microanalysis (EPMA) techniques. The results obtained from the X-ray diffraction of phases and their scanning electron microscopic analyses were used for explaining the properties of chemical grade chromite ores. The research is aimed at improving the efficiency of extraction of chromium from chromite minerals from different origins, and thereby reducing the amount of chromium lost in the waste stream after the extraction process.
机译：化学级亚铬酸盐矿石广泛用于铬酸钠的生产。矿物学特性在利用来自不同来源的多种化学级铬铁矿中构成了主要限制，它决定了纯碱焙烧过程中铬酸钠的收率。本文报道了来自南非，印度，菲律宾，印度尼西亚和中国5个不同国家的化学级铬铁矿的矿物学特性。使用原子吸收光谱（AAS），X射线荧光光谱（XRF），X射线衍射分析（XRD），扫描电子显微镜（SEM）和电子探针显微分析（EPMA）研究了铬铁矿的物理和化学性质。 ）技术。从相的X射线衍射及其扫描电子显微镜分析获得的结果用于解释化学级铬铁矿的特性。这项研究旨在提高从不同来源的亚铬酸盐矿物中提取铬的效率，从而减少提取过程后废物流中铬的损失量。

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