苏联十月革命后创建的铝工业.目前已发展成为一个庞大的有色冶金部门。越来越大规模地采用低品位高硅铝土矿、霞石和明礬石为原料是苏联氧化铝生产的特点,而国外主要是利用容易分解的高铝硅比(12～20)优质铝土矿为原料,并采用设备和工艺流程均不甚复杂的拜耳法。应强调指出,如果说,国外改善技术经济 The aluminum industry, which was created after the October Revolution in the Soviet Union, has now developed into a vast non-ferrous metallurgical sector. The increasing use of low grade silicate bauxite, nepheline and alunite as raw materials is an increasingly important feature of the Soviet Union’s alumina production. However, overseas countries mainly make use of high-alumina-silica (12-20) high-quality bauxite that is easily decomposed As raw materials, and the use of equipment and processes are not very complicated Bayer process. It should be emphasized that if we say that technological and economic improvements abroad are made