Recovery of Cobalt and Zinc from Metallurgical Wastewater Via a Selective Chelation Precipitation and Flotation Process

被引：0

作者：

Huang, Yanfang ^{[1
,2
]}

Wang, Meimei ^{[1
]}

Liu, Bingbing ^{[1
,2
]}

Han, Guihong ^{[1
,2
]}

Sun, Hu ^{[1
,2
]}

机构：

[1] Zhengzhou Univ, Sch Chem Engn, Zhengzhou 450001, Henan, Peoples R China

[2] Zhengzhou Univ, Henan Crit Met Lab, Zhengzhou 450001, Henan, Peoples R China

来源：

TMS 2024 153RD ANNUAL MEETING & EXHIBITION: SUPPLEMENTAL PROCEEDINGS | 2024年

基金：

中国国家自然科学基金;

关键词：

Metallurgical wastewater treatment; Selective chelation precipitation; Flotation separation; Metals recovery;

D O I：

10.1007/978-3-031-50349-8_170

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Harmless treatment of Zn hydrometallurgy wastewater is of great significance with the increasingly stringent environmental protection. Recovery of strategic metals such as Co and Zn from the wastewater has dual significance for resource recovery and environmental protection. In this work, a selective chelation precipitation-flotation process was proposed to recover Co and Zn from Zn hydrometallurgy wastewater with low concentrations of Co, Zn, and Mn metals. Its demonstrated sodium diethyldithiocarbamate (NaDDC) can be used as a selective chelation reagent to synchronously recover Co and Zn in the precipitation flotation process. The effects of pH value, NaDDC dosage, chelation temperature, reaction time, and flotation reagent dosage on the recovery efficiency of Co and Zn from wastewater were systematically studied. After optimization, over 99% Co and Zn were firstly recycled from the wastewater by selective chelation precipitation-flotation process, and the rest Mn solution can be further purified to qualified recycled water.

引用

页码：1938 / 1945

页数：8

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