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The new process of high purity ferrosilicon overcomes the shortcomings of traditional methods, selects appropriate raw materials and process conditions, and produces high purity ferrosilicon for use in the smelting of high-grade silicon steel. The production of high purity ferrosilicon uses selected quartz stone + petroleum coke (or petroleum coke plus a small amount of other carbon) + silicon steel scraps, which are reduced in a submerged arc furnace. The petroleum coke particle size is 0-10mm, and the optimal particle size is 0-5mm. The furnace charge ratio is quartz stone: petroleum coke: silicon steel scraps = 100: 40-55: 5-55. This ratio is based on fixed carbon content. The chemical composition (weight) requirements of quartz stone are SiO2>98.0%ã€Al2O3
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