Open AccessExperimental and Mechanism Analysis of Chlorination and Reduction of Copper Slag
Author(s) -
Shuchen Sun,
Qing Yu,
Yong Deng,
Xiumin Chen,
Jing Chen,
Liang Zhou
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/453/1/012093
Subject(s) - copper , copper slag , slag (welding) , raw material , metallurgy , carbon fibers , chloride , copper chloride , sodium , chemistry , materials science , inorganic chemistry , composite material , organic chemistry , composite number
Waste copper slag contains large amounts of iron. Carbothermic reduction of the copper slag to recover iron inevitably results in the co-production of copper, which causes brittleness and poses a significant cost to remove. In this work, the method of medium-temperature (MT) chlorination by sodium chloride and high-temperature (HT) reduction by carbon is used to remove copper selectively before the recovery of iron. The composition of raw materials and the products were analyzed by X-ray diffraction (XRD), and chemical analysis. It was found that excessive carbon and high temperature were unfavorable to the removal of copper from the copper slag. Cu 2 S and Cu can be chlorinated by sodium chloride and evaporates in the form of CuCl gas. Meanwhile, chlorination mechanism of copper slag was discussed.