Behavior, distribution and environmental influence of arsenic in a typical lead smelter
来源期刊：中南大学学报(英文版)2015年第4期
论文作者：CHAI Li-yuan SHI Mei-qing LIANG Yan-jie TANG Jing-wen LI Qing-zhu
文章页码：1276 - 1286
Key words：arsenic; behavior; distribution; environmental influence; SKS lead smelter
Abstract: A field study was conducted to determine the behavior and distribution of arsenic during the pyrometallurgy process in a typical SKS (Shuikoushan) lead smelter in Hunan province, China. Environmental influences of arsenic in selected samples were evaluated. Arsenic contents in all input and output samples vary from 0.11% in raw lead to 6.66% in collected dust-2. More arsenic is volatilized in blast furnace and fuming furnace (73.02% of arsenic input) than bottom blowing furnace (10.29% of arsenic input). There are 78.97%, 13.69%, 7.31% of total arsenic distributed in intermediate materials, stockpiled materials and unorganized emissions, respectively. Matte slag-2, collected dust-1 and secondary zinc oxide are hazardous based on the arsenic concentrations of toxicity characteristic leaching procedure. According to risk assessment code (RAC) guideline, arsenic in collected dust-1 poses a very serious risk to the surrounding environment, arsenic in speiss, matte slag-2, water-quenched slag and secondary zinc oxide show low risk, while arsenic in matte slag-1, collected dust-2 and post dust has no risk to the environment.
CHAI Li-yuan(柴立元)1, 2, SHI Mei-qing(史美清)1, LIANG Yan-jie(梁彦杰)1, TANG Jing-wen(汤景文)1, LI Qing-zhu(李青竹)1, 2
(1. School of Metallurgy and Environment, Central South University, Changsha 410083, China;
2. Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution
(Central South University), Changsha 410083, China)
Abstract:A field study was conducted to determine the behavior and distribution of arsenic during the pyrometallurgy process in a typical SKS (Shuikoushan) lead smelter in Hunan province, China. Environmental influences of arsenic in selected samples were evaluated. Arsenic contents in all input and output samples vary from 0.11% in raw lead to 6.66% in collected dust-2. More arsenic is volatilized in blast furnace and fuming furnace (73.02% of arsenic input) than bottom blowing furnace (10.29% of arsenic input). There are 78.97%, 13.69%, 7.31% of total arsenic distributed in intermediate materials, stockpiled materials and unorganized emissions, respectively. Matte slag-2, collected dust-1 and secondary zinc oxide are hazardous based on the arsenic concentrations of toxicity characteristic leaching procedure. According to risk assessment code (RAC) guideline, arsenic in collected dust-1 poses a very serious risk to the surrounding environment, arsenic in speiss, matte slag-2, water-quenched slag and secondary zinc oxide show low risk, while arsenic in matte slag-1, collected dust-2 and post dust has no risk to the environment.
Key words:arsenic; behavior; distribution; environmental influence; SKS lead smelter
