高炉瓦斯灰综合利用研究现状

Research Situation of the Blast Furnace Gas Ash Comprehensive Utilization

高炉瓦斯灰是由铁、碳以及Si、Al、Ca、Mg的氧化物组成,并含有低沸点的Pb、Zn氧化物与碱金属氧化物等,是一种质轻、粒微的物质。近年来随着高炉炼铁规模的扩大,产生了大量的高炉瓦斯灰,如果不实施综合利用,不但造成环境的污染,同时也是资源的浪费。文章针对国内外对高炉瓦斯灰综合利用的研究现状做了详细的阐述,瓦斯灰的利用主要表现在这些方面:高炉瓦斯灰直接作烧结配料;回收铁和碳;回收锌等有色金属元素;制备絮凝剂;作为吸附剂;高炉瓦斯灰与煤粉混合喷吹以及其它的一些应用。各种处理方式都没有达到有效综合利用的目的,有待对高炉瓦斯灰的利用提出更完善的措施。

The blast furnace dust,which contains the oxides of iron,carbon and Si,Al,Ca,Mg,some low-boiling oxides of Pb,Zn and alkali metal oxides,is lightweight micro particle material. In recent years,with the constant expansion of the blast furnace,a lot of blast furnace dust has been discharged which will not only cause serious environmental pollution,but also greatly waste resources if it is not comprehensively used. This paper mainly deals with the comprehensive utilization of the blast furnace dust both home and abroad. The use of dust mainly focuses on the following areas： sinter mix proportioning directly with blast furnace dust,recovery of iron and carbon,recovery of zinc and other non-ferrous metal elements,production of flocculants and adsorbent,coal injection into the blast furnace dust as well as some other researchers. The above researchers have not used the blast furnace dust comprehensively,so the use of blast furnace dust presents a better solution.