Obtaining Technical Silicon From the Sand of the Quartz Deposit “Jerdanak”

Abstract In this article, the chemical and mineralogical composition of the local quartz sands of Surkhandarya region was initially determined by the method of X-ray phase analysis. The sand was then washed and dried several times in distilled water for enrichment. The resulting clean sand was crushed, sifted and returned with magnesium at temperatures of 600–1800°C at intervals of 2–10 hours, technical Silicon (93%-94%) was obtained. Silicon oxide and magnesium metal for magniothermal extraction 2:1, 1:1, 1:2, 1:3, 1:4, 1:7 the goods were taken in proportions. It was washed three to four times in distilled water, hydrochloric acid, alkali to extract Silicon from the composition of the resulting reaction mixtures. The purity of the extracted Silicon was studied using X-ray phase and element Analysis. The study found that the optimum temperature for reaction of silicon oxide with magnesium was 800°C temperature, reaction duration was 6 hours, with a molar ratio of silicon oxide and magnesium of 1:2, the reaction yield showed the highest result of 98,8%.

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