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一、国内外稀土应用概况稀土的应用只有一百年的历史。它首先应用于煤气灯的白炽纱罩。后来用于打火石,抛光粉和碳弧棒。本世纪六十年代以来,由于氯化稀土用于石油裂化催化剂,钇铕用于彩色电视萤光粉,稀土钴合金用于永磁材料,稀土低合金钢用于石油天然气管道,使稀土的用量猛增。据美国矿务局资料,1985年全世界予计需要稀土55000短吨REO,2000年予计需要120000短吨REO,详见表1
First, the application of rare earths at home and abroad The application of rare earth only a hundred years of history. It is first applied to the incandescent gauze of gas lamps. Later for flint, polishing powder and carbon arc stick. Since the 1960s, due to the use of rare earth chlorination catalyst for petroleum cracking, yttrium and europium for color television phosphor, rare earth cobalt alloy for permanent magnet materials, rare earth low alloy steel for oil and gas pipelines, the amount of rare earth Soared. According to the US Bureau of Mines, in 1985 worldwide, a total of 55,000 short tons of REO were required for rare earths. In 2000, a total of 120,000 short tons of REO are required, as shown in Table 1