摘要
以典型的锡冶炼烟尘为研究对象,对砷、汞的赋存形态和分布特性进行研究。结果表明,锡冶炼企业排放烟尘中的重金属污染物主要包括砷、汞、镉、锡等,其中回转窑工段以砷尘为主,烟化炉工段以锡尘为主。回转窑烟尘的砷含量高达48.00%、汞含量为0.005%,电炉烟尘的砷含量仅1.15%、汞含量为0.0064%。回转窑烟尘为粗颗粒烟尘,粒径+10μm的占34.83%;烟化炉烟尘粒径较小,-3μm的占比65.18%;电炉烟尘主要集中分布小粒径范围内,-1μm的颗粒占总量41.72%。锡冶炼烟尘中砷形态以As(Ⅲ)为主,汞含量较低,主要以单质汞和氧化汞的形态存在。
Existence speciation and distribution characteristics of arsenic and mercury in typical tin smelting dust were studied.The results show that heavy metal pollutants in dust discharged by tin smelting enterprises mainly include arsenic,mercury,cadmium and tin,among which arsenic dust is the main element in rotary kiln and tin dust is the main one in fuming furnace.Arsenic content of rotary kiln dust is as high as 48.00%and mercury content is 0.005%,arsenic content of electric furnace dust is only 1.15%and mercury content is 0.0064%.Dust in rotary kiln is in form of coarse particle with+10μm accounting for 34.83%.Particle size of fuming furnace dust is smaller with-3μm accounting for 65.18%.Smoke dust in electric furnace mainly distributes in the range of small particle size with-1μm accounting for 41.72%.Arsenic speciation in tin smelting dust is mainly As(Ⅲ),and mercury content is low and mainly exist in form of elemental mercury and mercuric oxide.
作者
王丽
王苗
谢容生
和淑娟
WANG Li;WANG Miao;XIE Rong-sheng;HE Shu-juan(Yunnan Environmental Engineering Design&Research Center,Kunming 650034,China;Kunming Metallurgical Research Institute,Kunming 650503)
出处
《有色金属（冶炼部分）》
CAS
北大核心
2019年第10期22-25,共4页
Nonferrous Metals（Extractive Metallurgy)
基金
云南省环保厅专项资金资助项目(2017YHM001)
西部典型行业环境污染控制协同创新中心开放基金(XTCX2017-04)
关键词
锡冶炼烟尘
砷
汞
赋存形态
分布特征
tin smelting dust
arsenic
mercury
existence speciation
distribution characteristics
