论文部分内容阅读
十几年以来,国外几种直接还原工艺发展成熟,炼钢、铸造的需要有所发展,今后的趋势仍可持续下去,全世界直接还原铁(含海绵铁、金属化球团与热压块)的年产量由1970年73万吨增至1985年1114万吨。其中七十年代平均每年增加65.7万吨,平均每年增加31.2％;八十年代前期平均每年增加75.0万吨,平均每年增加12.0％。直接还原装置能力由1970年149万吨增至1985年2162万吨。其中七十年代平均每年增加107.1万吨,即平均每年增加24.1％;八十年代前期平均每年增加157万吨,平均每年增加12.14％。详见表1[1～9.12]。
More than a decade, the development of several foreign direct reduction technology mature, steelmaking, casting needs to be developed, the future trend can continue, the world direct reduction of iron (including sponge iron, metal pellets and hot briquetting ) Annual output increased from 730,000 tons in 1970 to 11,140,000 tons in 1985. Among them, the average annual increase of seventies was 657,000 tons, an average annual increase of 31.2%; in the early 1980s, the average annual increase of 750,000 tons, with an average annual increase of 12.0%. The capacity of direct reduction units increased from 1.49 million tons in 1970 to 21.62 million tons in 1985. Among them, the average increase of seventies is 1.071 million tons per annum, that is, an average annual increase of 24.1%. In the early eighties, the average annual increase was 1.57 million tons, an average annual increase of 12.14%. See Table 1 [1 ~ 9.12] for details.