| Antimony smelting process generating solid wastes and dust：Characterization and leaching behaviors |
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| 作者姓名： | Xuejun Guo Kunpeng Wang Mengchang He Ziwei Liu Hailin Yang Sisi Li |
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| 作者单位： | State Key Laboratory of Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China;State Key Laboratory of Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China;State Key Laboratory of Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China;State Key Laboratory of Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China;State Key Laboratory of Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China;State Key Laboratory of Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China |
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| 基金项目： | This work was supported by the Environment Protection Specific Project (Nos. 201409096, 201009037-06) and the National Natural Science Foundation of China (Nos. 41273105, 41371440). |
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| 摘 要： | A large amount of solid waste has been produced by the antimony smelting process in the＂World Capital of Antimony＂, Xikuangshan area in China. This study comprehensively investigated the physical and chemical characteristics of the various solid wastes, as well as the leaching behavior of the solid wastes, which included water-quenched slag,arsenic-alkali residue, desulfurized slag and blast furnace dust. These four types of waste were enriched in a variety of heavy metals and metalloids and more specifically with As and Sb levels up to 8.6 × 104 and 3.16 × 105mg/kg, respectively, in arsenic-alkali residue. For desulfurized slag and water-quenched slag, the leaching concentration of Sb significantly exceeded the acceptable limits during the leaching tests using the toxicity characteristic leaching procedure and the synthetic precipitation leaching procedure. In addition, As leaching in arsenic-alkali residue was extraordinarily hazardous, being three orders of magnitude higher than the regulatory level of As. According to the results of the extraction tests, all the tested wastes were classified as hazardous waste.
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| 关 键 词： | 固体废物 浸出行为 冶炼过程 锑 表征 灰尘 生活垃圾 化学特性 |
| 收稿时间： | 28 August 2013 |
| 修稿时间： | 2 December 2013 |
Antimony smelting process generating solid wastes and dust：Characterization and leaching behaviors |
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| Xuejun Guo,Kunpeng Wang,Mengchang He,Ziwei Liu,Hailin Yang,Sisi Li.Antimony smelting process generating solid wastes and dust：Characterization and leaching behaviors[J].Journal of Environmental Sciences,2014,26(7):1549-1556. |
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| Authors: | Xuejun Guo Kunpeng Wang Mengchang He Ziwei Liu Hailin Yang and Sisi Li |
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| Institution: | State Key Laboratory of Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China;State Key Laboratory of Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China;State Key Laboratory of Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China;State Key Laboratory of Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China;State Key Laboratory of Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China;State Key Laboratory of Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China |
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| Abstract: | A large amount of solid waste has been produced by the antimony smelting process in the "World Capital of Antimony", Xikuangshan area in China. This study comprehensively investigated the physical and chemical characteristics of the various solid wastes, as well as the leaching behavior of the solid wastes, which included water-quenched slag, arsenic-alkali residue, desulfurized slag and blast furnace dust. These four types of waste were enriched in a variety of heavy metals and metalloids and more specifically with As and Sb levels up to 8.6 × 104 and 3.16 × 105 mg/kg, respectively, in arsenic-alkali residue. For desulfurized slag and water-quenched slag, the leaching concentration of Sb significantly exceeded the acceptable limits during the leaching tests using the toxicity characteristic leaching procedure and the synthetic precipitation leaching procedure. In addition, As leaching in arsenic-alkali residue was extraordinarily hazardous, being three orders of magnitude higher than the regulatory level of As. According to the results of the extraction tests, all the tested wastes were classified as hazardous waste. |
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| Keywords: | Antimony smelter slag Arsenic BCR sequential extraction TCLP SPLP |
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