—、前言硅钙铁一般指含Ca10—20％、Si50—65％、Fe15—25％的低Ca含量的硅钙合金。国内外实践证明,硅钙铁可以取代等量的高Ca含量(Ca≥24％)的硅钙合金应用于合金钢的脱氧,且效果良好。由于硅钙铁较易冶炼,电耗低,所以有些国家已将其列入国家产品标准。我国有的铁合金厂亦已将硅钙铁 -, Preface Calcium-calcium-iron generally refers to calcium-containing alloy containing Ca 10-20%, Si 50-65%, Fe 15-25% low Ca content. Practice at home and abroad proved that silicon-calcium-iron can replace the same amount of high-Ca content (Ca ≥ 24%) of calcium-silicon alloy used in deoxidation of alloy steel, and the effect is good. As Si-Ca iron easier to smelt, low power consumption, so some countries have included it in the national product standards. Some ferroalloy factories in China have also been silicon-calcium iron