Clean strengthening reduction of lead and zinc from smelting waste slag by iron oxide

被引：39
|
作者：
Li, Yanchun [1 ]
Liu, Zhilou [1 ]
Liu, Hui [1 ,2 ]
Peng, Bing [1 ,2 ]
机构：
[1] Cent S Univ, Inst Environm Sci & Engn, Sch Met Sci & Engn, Changsha 410083, Hunan, Peoples R China
[2] Chinese Natl Engn Res Ctr Control & Treatment Hea, Changsha 410083, Hunan, Peoples R China
来源：
JOURNAL OF CLEANER PRODUCTION | 2017年 / 143卷
基金：
中国国家自然科学基金;
关键词：
Smelting waste slag; Zinc volatilization; Lead volatilization; Iron oxide; ARC FURNACE DUST; FLY-ASH; SULFIDATION BEHAVIOR; SELECTIVE REDUCTION; FUNNEL GLASS; MOLTEN SLAG; STEEL SLAG; RECOVERY; CARBON; VOLATILIZATION;
D O I：
10.1016/j.jclepro.2016.12.108
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Massive emissions of smelting waste slag (SWS) cause serious harm to environment because of including toxic metal such as zinc and lead. Reduction-volatilization is considered as a effective method to trap toxic metal elements from SWS. A novel and clean process was developed to strengthen reduction and volatilization of lead and zinc by iron oxide reduction. The effects of temperature, C/Fe molar ratio, holding time and basicity on the volatilization of lead and zinc in the iron oxide reduction system was investigated. The intensified reduction mechanism was briefly analyzed based on results. The leaching toxicity was used to characterize the environmental impact of SWS. This environmentally friendly method has promise to treat hazardous hydrometallurgical residues, smelting slag and dust. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：311 / 318
页数：8
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