Magniothermal Methods of Silicon Extraction from Quartz Sands of "Jerdanak" Mine

In this article, the chemical and mineralogical composition of the sands of the local quartz mine "Jerdanak" in Sherabad district (Surkhondarya, Uzbekistan) is analyzed by X-ray phase analysis (XRD), Scanning Electron Microscopy (SEM), Emission Semi-qualitative Spectral (EYaS), Infrared Spectroscopy (IR) analysis methods were determined.Then, the sand was washed several times in distilled water for enrichment and dried.The obtained clean sand was crushed, sieved and reduced with magnesium and aluminum at different temperatures up to 1800 for up to 8 hours, and technical silicon (93%-94%) was obtained.Magnesium metal and silicon (IV) oxide in a 2:1 mole ratio and aluminum, magnesium metals and silicon (IV) oxide in a 1:0.1:1.33 ratio for obtaining technical silicon by the magnoalluminothermic method; 1:0.2:1.33;It was obtained in 0.2:2:1 mole ratio.The resulting reaction was washed three to four times in distilled water, hydrochloric acid, and alkali to remove silicon from the samples.The purity of the isolated silicon was reanalyzed using XRD, SEM, EyaS, and IR-analysis methods.The optimal reaction temperature was 800C, the reaction duration was 6 hours, and the reaction yield was the highest (75%) when the mole ratio of silicon oxide and magnesium was 1:2.