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采集河北省某钢铁企业烧结、高炉和转炉工序中的PM_(2.5)和PM_(10)样品进行单颗粒物形貌、粒径和元素分布特征分析,与全颗粒物的化学组成进行对比,采用分歧系数对不同工序细颗粒物成分进行相似性比较.结果表明,3个工序排放的颗粒物主要为富铁、富铅、无机盐复合、富硅、富钙和碳质颗粒等6类,烧结工序颗粒物粒径主要为1.5~10.0μm,高炉和转炉工序主要为0~2.5μm.烧结工序排放源主要成分为Cl,K,OC,Fe,Na和SO_4~(2-),高炉和转炉工序中PM_(2.5)和PM_(10)的主要成分为Fe.相同工序中PM_(2.5)与PM_(10)成分较一致,不同工序中颗粒物成分差异较大.
The PM_ (2.5) and PM_ (10) samples from sinter, blast furnace and converter of an iron and steel company in Hebei province were collected to analyze the characteristics of single particle morphology, particle size and elemental distribution, and compared with the chemical composition of the whole particulate matter. The results showed that the particles discharged from the three processes were mainly iron-rich, lead-rich, inorganic salt, silicon-rich, calcium-rich and carbonaceous particles. The particle size of the particles in the sintering process Mainly from 1.5μm to 10.0μm, and the blast furnace and converter processes are mainly from 0 to 2.5μm.The main components of the source of sintering process are Cl, K, OC, Fe, Na and SO_4 ~ (2-), PM_ (2.5 ) And PM_ (10) were the main components of Fe. The same process PM_ (2.5) and PM_ (10) components are more consistent, different processes in the composition of the larger differences in the particulate matter.