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首页> 外文会议>International Conference on Alternative Routes of Iron and Steelmaking ICARISM'99, Sep 15-17, 1997, Perth, WA >DRI―An Alternative Amongst Many
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DRI―An Alternative Amongst Many

机译：DRI-许多替代方案

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摘要

In view of depleting reserve of metallurgical coking coal, environmental pollution of coke making, need for smaller units for ironmaking and certain limitations inherent in the blast furnace process, there has been a search for ironmaking processes, alternative to blast furnace. Although, blast furnace continues to be the most efficient route of bulk ironmaking and also the single largest source of primary iron, the metallic requirements of steel production are also met through scraps, Directly Reduced Iron (DRI), Hot Briquetted Iron (HBI), etc. The limitations inherent in the blast furnace process, have actually led to the emergence of Direct Reduction (DR) and Smelt Reduction (SR) processes of ironmaking. The sponge iron (DRI) is produced by direct reduction of solid iron ore to metallic iron by using solid or gaseous reductant in a specially designed reactor. The short supply of pig iron and ever increasing demand for ferrous scrap for use in secondary steel sectors and ferrous foundries have drawn considerable attention to the production of sponge iron. Substitution of scrap and pig iron by sponge iron in the feed materials for steelmaking, in mini and integrated steel plants, and for ironmaking in foundries, is a viable solution. In advanced countries there is a demand for DRI as a diluent for tramp elements. This alternative feed material needs special attention for technology update.
机译：鉴于冶金焦煤的枯竭，炼焦的环境污染，需要较小的炼铁装置以及高炉工艺固有的某些局限性，一直在寻找替代高炉的炼铁工艺。尽管高炉仍然是散装炼铁的最有效途径，也是最大的一次生铁来源，但也可以通过废钢，直接还原铁（DRI），热压块铁（HBI），高炉工艺固有的局限性实际上导致了炼铁的直接还原（DR）和冶炼还原（SR）工艺的出现。海绵铁（DRI）是通过在特殊设计的反应器中使用固态或气态还原剂将固态铁矿石直接还原为金属铁而生产的。生铁的供应短缺以及对用于二级钢铁行业和黑色金属铸造厂的黑色金属废料的需求与日俱增，引起了海绵铁生产的极大关注。在炼钢，小型和综合炼钢厂以及铸造厂的炼铁原料中，用海绵铁代替废铁和生铁是一种可行的解决方案。在先进国家中，需要将DRI作为流浪汉元素的稀释剂。这种替代饲料原料需要特别注意以进行技术更新。

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