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钢铁行业既是能量消耗大户,又是污染大户。生产1吨粗钢大约可产生2.3吨CO_2、2.2公斤SO_2和2.3公斤NO_x,另外,还有3m~3废水、110克氨、8克苯酚和氰化物等,以及1.6公斤悬浮固体。为了解决高炉污染问题,很多国家都在致力研究可直接用铁矿和煤炼铁的新工艺,其中,熔融还原技术(COREX)工艺已成功地投入了工业运行。在充分考察世界各国的研究经验和成果的基础上,本文作者于1996年9月提出了一种能直接处理精矿粉的熔态还原工艺,可以很好地
The steel industry is not only a big energy consumer, but also a big polluter. Approximately 2.3 tons of CO 2, 2.2 kilograms of SO 2 and 2.3 kilograms of NO x can be produced from 1 ton of crude steel, plus 3 milligrams of wastewater, 110 grams of ammonia, 8 grams of phenol and cyanide, and 1.6 kilos of suspended solids. In order to solve the problem of blast furnace pollution, many countries are devoting themselves to studying new technologies that can make iron directly from iron ore and coal. Among them, the COREX process has been successfully put into operation in the industry. On the basis of fully studying the research experience and achievements of all the countries in the world, the author proposed a molten state reduction process capable of directly processing the concentrate powder in September 1996, which can well