引言自从1911年原拜耳法专利权消失以后,世界绝大多数氧化铝都是用拜耳法生产的。但直到50年代末,由于所用铝土矿的组成,能源价格和所用电解槽设计的不同,拜耳法一直用两种不同的工艺条件生产。“欧洲”拜耳法在用高温、高苛性碱浓度溶出和氢氧化铝分解的产出率高达60克/升以上的条件下,生产细粒、高温焙烧的粉状氧化铝。“美国”拜耳法 Introduction Since the dissolution of the original Bayer law patents in 1911, most of the world’s alumina has been produced by the Bayer process. However, until the late 1950s, Bayer’s method had been produced using two different process conditions due to the composition of the bauxite used, the energy price, and the design of the cell used. “Bayer” Europe produces fine-grained, high-temperature calcined powdered alumina at high yields of 60% per liter by high-temperature, caustic-alkali-leaching and aluminum hydroxide decomposition. “United States” Bayer method