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自20世纪80年代我国在有色金属行业提出“优先发展铝工业”的战略发展方针以来,我国铝工业有了长足的发展。2003年,国内冶炼铝产量达到了520万t,居世界第一位,我国已经成为世界铝工业大国。国内铝冶炼行业在规模、槽型、布局、节能、环保上存在先天不足,原料质量差、管理水平比较低,同时能耗高、污染严重。一方面冶炼烟气的余热利用效果不佳,另一方面烟气的除尘净化更是难中之难、重中之重。
Since the 1980s when our country put forward the strategic development principle of “giving priority to the development of aluminum industry” in the non-ferrous metal industry, the aluminum industry in our country has developed by leaps and bounds. In 2003, the domestic output of smelting aluminum reached 5.2 million tons, ranking first in the world and China has become the world’s largest aluminum industrial country. Domestic aluminum smelting industry in the scale, trough, layout, energy saving, environmental protection there are inherent deficiencies, poor quality of raw materials, management level is relatively low, high energy consumption, serious pollution. On the one hand, smelting flue gas waste heat utilization is not good, on the other hand, flue gas dust removal is more difficult, the top priority.