Recovery of Metals from Copper Smelting Slag Using Coke and Biochar

被引：4

作者：

Chen, Min ^{[1
,4
]}

Sukhomlinov, Dmitry ^{[1
]}

Taskinen, Pekka ^{[1
]}

Hamuyuni, Joseph ^{[2
]}

Michallik, Radoslaw M. ^{[3
]}

Lindgren, Mari ^{[2
]}

Jokilaakso, Ari ^{[1
]}

机构：

[1] Aalto Univ, Sch Chem Engn, Dept Chem & Met Engn, Kemistintie 1F,POB 16100, Aalto 00076, Finland

[2] Metso Res Ctr, Kuparitie 10,POB 69, Pori 28101, Finland

[3] Geol Survey Finland, Vuorimiehentie 2, Espoo 02150, Finland

[4] Swerim AB, Proc Met, Aronstorpsvagen 1,Box 812, S-97437 Lulea, Sweden

来源：

JOURNAL OF SUSTAINABLE METALLURGY | 2024年 / 10卷 / 01期

关键词：

Circular economy; Resource efficiency; Hazardous materials; Reduction; Slag cleaning;

D O I：

10.1007/s40831-024-00793-7

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

With the purpose of recovering the metal values, in this study the copper slag was reduced by coke and biochar at 1250 degrees C in an argon gas atmosphere using the isothermal reduction/drop quenching technique. The phase compositions of metal, matte, and slag were determined using electron probe microanalysis (EPMA). The effects of reduction time and amount of reductant were investigated. The distribution of elements between metal/matte and slag was ascertained based on the elemental concentrations determined by EPMA. It was found that copper concentration in slag can be effectively decreased to approximately 0.4-0.6 wt% within 5 min by coke and biochar. Copper and nickel can also be successfully recovered into the copper alloy phase once settling has been accomplished.

引用

页码：360 / 374

页数：15

共 43 条

[41] Cleaner recycling of iron from waste copper slag by using walnut shell char as green reductant [J].