Study on the Preparation of High-Purity Quartz from Vein Quartz of Shaanxi
Using a vein quartz from Shaanxi as raw materials,the elemental composition,mineralogy characteristics and impurity occurrence state of vein quartz were studied by X-ray fluorescence spectrometer(XRF),electron optical microscope,electron microprobe and energy spectrome-ter.According to the analysis results of the raw materials,the raw materials were purified by the process of"color sorting-rod friction scrubbing-size grading-magnetic separation-flotation-acid leaching",and a high-purity quartz was obtained,the SiO2 content was 99.995%,Fe2O3 content decreased to 0.8×10-6,Al2O3 content decreased to 25.2×10-6,which met the requirements of 4N5 grade high-purity quartz sand.
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