包钢高炉除尘灰中有害元素分析研究

利用LS230激光粒度分析仪，检测了各级高炉煤气除尘灰及出铁场环境灰的粒度并获得了灰尘粒度分布；利用化学分析法对重力灰、旋风灰、布袋灰和环境灰中碱金属氧化物K₂O、Na₂O及其他有色金属元素Pb、Zn、As、Sn质量分数进行了分析测定，研究了有害元素在各级除尘灰及环境灰中的分布规律。研究结果表明:煤气除尘灰中重力灰粒度最大，有害元素质量分数最少，只有1.94%；布袋灰粒度最小，有害元素质量分数最高，为15.79%；环境灰粒度较各级煤气除尘灰均小，所含有害元素质量分数较少，为1.02%。说明高炉煤气除尘灰粒度越小，所含有害元素越多，布袋灰有害元素脱除是有害元素处理和回收利用的重要途径。

Research on Harmful Elements in the Dust Eliminated From Blast Furnace Gas of Baogang

The granularity levels of blast furnace dust eliminated and environment ash were measured and particle size distribution was gained with laser particle size analyzer.By chemical analysis methods,the contents of Na2O,K2O and other non-ferrous metal oxide,Zn,As,Pb and Sn in gravity ash,whirlwind ash,bag ash and environment ash were analyzed.The distribution of harmful elements in dust eliminated and environment ash is researched.Results show that the gravity ash granularity is the biggest in which harmful ele...