Optimization of Copper Recovery and Fluorine Fixation from Spent Carbon Cathode Reduction Copper Slag by Response Surface Methodology

被引：0

作者：

Li, Mingyang ^{[1
,2
]}

Zhou, Shiwei ^{[1
,2
]}

Li, Bo ^{[1
,2
]}

Wei, Yonggang ^{[1
,2
]}

Wang, Hua ^{[1
]}

机构：

[1] Kunming Univ Sci & Technol, State Key Lab Complex Nonferrous Met Resources Cle, Kunming 650093, Peoples R China

[2] Kunming Univ Sci & Technol, Fac Met & Energy Engn, Kunming 650093, Peoples R China

来源：

JOURNAL OF SUSTAINABLE METALLURGY | 2024年

基金：

中国国家自然科学基金;

关键词：

Spent cathode carbon; Copper slag; Copper recovery; Fluorine fixation; Response surface methodology; ACTIVATED CARBONS; REMOVAL; WASTE; IRON; RSM; ADSORPTION; EXTRACTION; ADSORBENT; SIZE;

D O I：

10.1007/s40831-024-00919-x

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Spent cathode carbon (SCC) contains a considerable amount of soluble fluoride, which is classified as a hazardous emission. In this study, SCC is employed to reduce copper slag, facilitating the recovery of valuable metals, such as copper and iron, while simultaneously fixing soluble fluoride. The results reveal the substantial influences of these factors (temperature, reducing time, and CaO addition) on fluoride fixation, while the reduction temperature and time significantly affect copper recovery. The optimal results of model fitting are that the fluorine fixation is 75.6%, and the copper recovery is 97.2%. The actual fluorine fixation obtained is 75.1%, and the copper recovery is 96.2%, closely aligning with the predicted outcomes of the model. The toxic leaching test and SEM-EDS analysis show that F- is effectively immobilized in the form of stabilized CaF2, avoiding the potential hazard of fluorine.

引用

页码：2186 / 2204

页数：19

共 52 条

[1] Effect of grain size on the electrical conductivity of copper-iron alloys [J].