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文献已能很好地证明稀土加入剂对于碳钢、不锈钢、高温合金和灰口铸铁均有有益的作用。由于球墨铸铁的发明亦已知道铈能促进石墨的球化。二十世纪六十年代初期,富特矿业公司就开始研究用碳直接还原稀土精矿,经济地生产稀土金属或合金的可能性。该项研究特别是研究制造一种铈—硅铸造合金,即能够有效地用作可锻铸铁球化剂和灰口铸铁孕育剂的合金。起初冶炼这种合金是采用氟碳铈(钅兰)矿精矿作为稀土原料。后来,当我们铸造研究小
The literature has well demonstrated that rare earth chargers have beneficial effects on carbon steel, stainless steel, superalloy and gray cast iron. Since the invention of ductile iron also knows that cerium can promote the spheroidization of graphite. In the early 1960s, Ford Mining began researching the possibility of producing rare earth metals or alloys economically by directly reducing rare earth concentrates with carbon. In particular, the study investigates the manufacture of a cerium-silicon cast alloy, an alloy that can be effectively used as a malleable cast iron nodulizer and a gray cast iron inoculant. Initially smelting this alloy is the use of fluorocarbon (钅 Lan) ore concentrate as a rare earth raw materials. Later, when we cast a small study