Analysis of slag chemistry in WEEE smelting using experimental and modelling study of the "CuO 0.5 "-ZnO-FeO-FeO 1.5-CaO-SiO 2-AlO 1.5 system in equilibrium with Cu metal

被引：5

作者：

Khartcyzov, Georgii ^{[1
]}

Kleeberg, Cora ^{[2
]}

Shevchenko, Maksym ^{[1
]}

Shishin, Denis ^{[1
]}

Jak, Evgueni ^{[1
]}

机构：

[1] Univ Queensland, Sch Chem Engn, PYROSEARCH, Brisbane, Qld 4068, Australia

[2] Aurubis AG, Kupferstr 23, D-44532 Lunen, Germany

来源：

CERAMICS INTERNATIONAL | 2024年 / 50卷 / 15期

基金：

澳大利亚研究理事会;

关键词：

Copper; WEEE; e-scrap; Recycling; Phase equilibria; Liquidus; EXPERIMENTAL PHASE-EQUILIBRIA; EXPERIMENTAL LIQUIDUS; TERNARY-SYSTEM; ELEMENTS;

D O I：

10.1016/j.ceramint.2024.04.380

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The variability of the composition of recycled copper-containing materials requires enhanced control and understanding of slag chemistry in the secondary pyrometallurgical processing, when compared to primary copper smelting. In the black copper route for recycling waste electronic and electrical equipment (WEEE), slags exhibit high concentrations of alumina and zinc oxide. The simplest system governing phase equilibria at the reducing smelting stage of the black copper process is " CuO 0.5 " -ZnO-FeO-FeO 1.5 -CaO-SiO 2 -AlO 1.5 . In the present study, slags within this system were equilibrated with liquid copper Cu and solid Fe metallic alloys, quenched and characterized by the Electron Probe X-ray Microanalysis (EPMA). The range of compositions was selected based on the information about the process available in literature. The study focused on the liquidus and proportion of solid spinel in the temperature range from 1100 to 1300 degrees C. Precise control of the proportion of solids can enhance the stability of refractory materials against corrosive slags while maintaining entrained metal droplets at reasonably low level. Additionally, experimental correlations between the solubility of copper in the oxide liquid and the partial pressure of oxygen were developed for the Zn -free slags in equilibrium with metallic copper at 1200 and 1300 degrees C. All experimental results were compared to thermodynamic predictions using recent models and FactSage (R) software. Uncertainties were identified to be used in further model improvement.

引用

页码：26513 / 26527

页数：15

共 70 条

[1] Distribution of elements between copper and FeOx-CaO-SiO2 slags during pyroprocessing of WEEE: Part 2 - indium [J].

Anindya, A. ;

Swinbourne, D. R. ;

Reuter, M. A. ;

Matusewicz, R. W. .

TRANSACTIONS OF THE INSTITUTIONS OF MINING AND METALLURGY SECTION C-MINERAL PROCESSING AND EXTRACTIVE METALLURGY, 2014, 123 (01) :43-52

[2] Distribution of elements between copper and FeOx-CaO-SiO2 slags during pyrometallurgical processing of WEEE [J].

Anindya, A. ;

Swinbourne, D. R. ;

Reuter, M. A. ;

Matusewicz, R. W. .

TRANSACTIONS OF THE INSTITUTIONS OF MINING AND METALLURGY SECTION C-MINERAL PROCESSING AND EXTRACTIVE METALLURGY, 2013, 122 (03) :165-173

[3]

Avarmaa K, 2016, ADVANCES IN MOLTEN SLAGS, FLUXES, AND SALTS, P193

[4] Recoveries of rare elements Ga, Ge, In and Sn from waste electric and electronic equipment through secondary copper smelting [J].

Avarmaa, Katri ;

Yliaho, Simon ;

Taskinen, Pekka .

WASTE MANAGEMENT, 2018, 71 :400-410

[5] FactSage thermochemical software and databases, 2010-2016 [J].

Bale, C. W. ;

Belisle, E. ;

Chartrand, P. ;

Decterov, S. A. ;

Eriksson, G. ;

Gheribi, A. E. ;

Hack, K. ;

Jung, I. -H. ;

Kang, Y. -B. ;

Melancon, J. ;

Pelton, A. D. ;

Petersen, S. ;

Robelin, C. ;

Sangster, J. ;

Spencer, P. ;

Van Ende, M-A. .

CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY, 2016, 54 :35-53

[6] FactSage thermochemical software and databases - recent developments [J].

Bale, C. W. ;

Belisle, E. ;

Chartrand, P. ;

Decterov, S. A. ;

Eriksson, G. ;

Hack, K. ;

Jung, I. -H. ;

Kang, Y. -B. ;

Melancon, J. ;

Pelton, A. D. ;

Robelin, C. ;

Petersen, S. .

CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY, 2009, 33 (02) :295-311

[7] Metallurgical Effects of Introducing Powdered WEEE to a Molten Slag Bath [J].

Borowski, Nikolaus ;

Trentmann, Anna ;

Brinkmann, Frederic ;

Stuertz, Matthias ;

Friedrich, Bernd .

JOURNAL OF SUSTAINABLE METALLURGY, 2018, 4 (02) :233-250

[8] Laser-induced breakdown spectroscopy (LIBS) combined with hyperspectral imaging for the evaluation of printed circuit board composition [J].

Carvalho, Rodrigo R. V. ;

Coelho, Jomarc A. O. ;

Santos, Jozemir M. ;

Aquino, Francisco W. B. ;

Carneiro, Renato L. ;

Pereira-Filho, Edenir R. .

TALANTA, 2015, 134 :278-283

[9] An experimental study on the phase equilibria of FeOx-saturated iron silicate slags and metallic copper alloys at 1200-1300?C [J].

Chen, Min ;

Avarmaa, Katri ;

Taskinen, Pekka ;

Michallik, Radoslaw ;

Jokilaakso, Ari .

CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY, 2022, 77

[10] Handling trace elements in WEEE recycling through copper smelting-an experimental and thermodynamic study [J].

Chen, Min ;

Avarmaa, Katri ;

Taskinen, Pekka ;

Klemettinen, Lassi ;

Michallik, Radoslaw ;

O'Brien, Hugh ;

Jokilaakso, Ari .

MINERALS ENGINEERING, 2021, 173

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