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公开(公告)号：US20050056120A1
公开(公告)日：2005-03-17
申请号：US10662685
申请日：2003-09-15
CPC分类号： C21C1/025 , C21C7/0645
摘要： The invention relates to a method for the preparation of a sodium-based reactive desulphurizing agent for use in molten ferrous materials. The sodium in the reactive desulphurizing agent is a sodium silicate, a composition comprising of Na2O and SiO2. In a second embodiment of the invention, the sodium silicate reactive desulphurizing agent also comprises of an alkali or an alkaline material or other materials, such as oxides of calcium, aluminum and magnesium. Preferred raw materials for the oxides of calcium, aluminum and magnesium are, respectively, lime, alumina and dolomite. The premixed solid reactive desulphurizing agent is brought in contact with the molten ferrous material, allowing the desulphurization or the double replacement of the iron sulphur to take place and produce a ferrous oxide. The sodium in the reactive desulphurizing agent is rendered resistant to combustion or evaporation on contact with the molten ferrous materials by the flux activity of the silica. A metallic solid, such as aluminum, is introduced into the molten ferrous material to complete the reduction of the ferrous oxide.
摘要翻译： 本发明涉及制备用于熔融黑色金属材料的钠基反应性脱硫剂的方法。 反应性脱硫剂中的钠是硅酸钠，由Na 2 O和SiO 2组成的组合物。 在本发明的第二个实施方案中，硅酸钠反应性脱硫剂还包括碱金属或碱性材料或其他材料，例如钙，铝和镁的氧化物。 钙，铝和镁的氧化物的优选原料分别是石灰，氧化铝和白云石。 使预混固体反应性脱硫剂与熔融的铁质材料接触，允许铁硫的脱硫或双重置换并产生氧化亚铁。 反应性脱硫剂中的钠通过二氧化硅的助熔剂活性而与熔融的亚铁物质接触时耐燃烧或蒸发。 将金属固体，例如铝引入熔融铁质材料中以完成氧化亚铁的还原。
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公开(公告)号：US20050066772A1
公开(公告)日：2005-03-31
申请号：US10673112
申请日：2003-09-26
CPC分类号： C21C1/025 , C21C7/0645
摘要： The invention relates to a method for the preparation of a sodium-based reactive desulphurizing agent for use in molten ferrous materials. The source of sodium in the reactive desulphurizing agent is a glass cullet, a composition comprising of at least Na2O and SiO2. In a second embodiment of the invention, the glass cullet reactive desulphurizing agent also comprises of an alkali or an alkaline material or other materials, such as oxides of calcium, aluminum and magnesium. Preferred raw materials for the oxides of calcium, aluminum and magnesium are, respectively, lime, alumina and dolomite. The premixed solid reactive desulphurizing agent is brought in contact with the molten ferrous material, allowing the desulphurization or the double replacement of the iron sulphur to take place and produce a ferrous oxide. The sodium in the reactive desulphurizing agent is rendered resistant to combustion or evaporation on contact with the molten ferrous materials by the flux activity of the silica. A metallic solid, such as aluminum, is introduced into the molten ferrous material to complete the reduction of the ferrous oxide.
摘要翻译： 本发明涉及制备用于熔融黑色金属材料的钠基反应性脱硫剂的方法。 反应性脱硫剂中的钠源是玻璃碎片，至少包含Na 2 O和SiO 2的组合物。 在本发明的第二个实施方案中，玻璃碎玻璃反应性脱硫剂还包括碱金属或碱性材料或其他材料，例如钙，铝和镁的氧化物。 钙，铝和镁的氧化物的优选原料分别是石灰，氧化铝和白云石。 使预混固体反应性脱硫剂与熔融的铁质材料接触，允许铁硫的脱硫或双重置换并产生氧化亚铁。 反应性脱硫剂中的钠通过二氧化硅的助熔剂活性而与熔融的亚铁物质接触时耐燃烧或蒸发。 将金属固体，例如铝引入熔融铁质材料中以完成氧化亚铁的还原。
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