Behavior of tin and antimony in secondary copper smelting process

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Behavior of tin and antimony in secondary copper smelting process. / Klemettinen, Lassi; Avarmaa, Katri; O’brien, Hugh; Taskinen, Pekka; Jokilaakso, Ari.

In: Minerals, Vol. 9, No. 1, 39, 01.01.2019.

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@article{de9f01c459294a8c84c1858e45259ef3,
title = "Behavior of tin and antimony in secondary copper smelting process",
abstract = "Different types of metal-bearing wastes, such as WEEE (Waste Electrical and Electronic Equipment), are important urban minerals in modern society, and the efficient recycling and reuse of their metal values is of key interest. Pyrometallurgical copper smelting is one of the most prominent ways of treating WEEE, however, more accurate experimental data is needed regarding the behavior of different elements during each process stage. This article investigates the behavior of tin and antimony, both commonly present as trace elements in electrical and electronic waste, in secondary (i.e., sulfur-free) copper smelting conditions. The experiments were conducted in oxygen partial pressure range of 10 −10 –10 −5 atm, covering the different process steps in copper smelting. The basis of the equilibrium system was metallic copper–iron silicate slag, with the addition of alumina and potassium oxide to account for the presence of these compounds in the actual industrial process. The results showed that the distribution coefficients of both trace metals, L Cu/slag = [wt {\%} Me] copper /(wt {\%} Me) slag , increased significantly as a function of decreasing oxygen pressure, and the addition of basic potassium oxide also had an increasing effect on the distribution coefficient. A brief comparison between EPMA and LA-ICP-MS (electron probe microanalysis and laser ablation–inductively coupled plasma–mass spectrometry), the two in situ analytical techniques used, was also presented and discussed.",
keywords = "Circular economy, Copper smelting, Distribution, Slag, Urban mining, ELECTRONIC EQUIPMENT WEEE, MINOR ELEMENTS, urban mining, slag, copper smelting, distribution, SB, RECOVERY, WASTE, CU, METALS, circular economy, SN, DISTRIBUTION EQUILIBRIA, SILICATE SLAG",
author = "Lassi Klemettinen and Katri Avarmaa and Hugh O’brien and Pekka Taskinen and Ari Jokilaakso",
year = "2019",
month = "1",
day = "1",
doi = "10.3390/min9010039",
language = "English",
volume = "9",
journal = "Minerals",
issn = "2075-163X",
publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",
number = "1",

}

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TY - JOUR

T1 - Behavior of tin and antimony in secondary copper smelting process

AU - Klemettinen, Lassi

AU - Avarmaa, Katri

AU - O’brien, Hugh

AU - Taskinen, Pekka

AU - Jokilaakso, Ari

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Different types of metal-bearing wastes, such as WEEE (Waste Electrical and Electronic Equipment), are important urban minerals in modern society, and the efficient recycling and reuse of their metal values is of key interest. Pyrometallurgical copper smelting is one of the most prominent ways of treating WEEE, however, more accurate experimental data is needed regarding the behavior of different elements during each process stage. This article investigates the behavior of tin and antimony, both commonly present as trace elements in electrical and electronic waste, in secondary (i.e., sulfur-free) copper smelting conditions. The experiments were conducted in oxygen partial pressure range of 10 −10 –10 −5 atm, covering the different process steps in copper smelting. The basis of the equilibrium system was metallic copper–iron silicate slag, with the addition of alumina and potassium oxide to account for the presence of these compounds in the actual industrial process. The results showed that the distribution coefficients of both trace metals, L Cu/slag = [wt % Me] copper /(wt % Me) slag , increased significantly as a function of decreasing oxygen pressure, and the addition of basic potassium oxide also had an increasing effect on the distribution coefficient. A brief comparison between EPMA and LA-ICP-MS (electron probe microanalysis and laser ablation–inductively coupled plasma–mass spectrometry), the two in situ analytical techniques used, was also presented and discussed.

AB - Different types of metal-bearing wastes, such as WEEE (Waste Electrical and Electronic Equipment), are important urban minerals in modern society, and the efficient recycling and reuse of their metal values is of key interest. Pyrometallurgical copper smelting is one of the most prominent ways of treating WEEE, however, more accurate experimental data is needed regarding the behavior of different elements during each process stage. This article investigates the behavior of tin and antimony, both commonly present as trace elements in electrical and electronic waste, in secondary (i.e., sulfur-free) copper smelting conditions. The experiments were conducted in oxygen partial pressure range of 10 −10 –10 −5 atm, covering the different process steps in copper smelting. The basis of the equilibrium system was metallic copper–iron silicate slag, with the addition of alumina and potassium oxide to account for the presence of these compounds in the actual industrial process. The results showed that the distribution coefficients of both trace metals, L Cu/slag = [wt % Me] copper /(wt % Me) slag , increased significantly as a function of decreasing oxygen pressure, and the addition of basic potassium oxide also had an increasing effect on the distribution coefficient. A brief comparison between EPMA and LA-ICP-MS (electron probe microanalysis and laser ablation–inductively coupled plasma–mass spectrometry), the two in situ analytical techniques used, was also presented and discussed.

KW - Circular economy

KW - Copper smelting

KW - Distribution

KW - Slag

KW - Urban mining

KW - ELECTRONIC EQUIPMENT WEEE

KW - MINOR ELEMENTS

KW - urban mining

KW - slag

KW - copper smelting

KW - distribution

KW - SB

KW - RECOVERY

KW - WASTE

KW - CU

KW - METALS

KW - circular economy

KW - SN

KW - DISTRIBUTION EQUILIBRIA

KW - SILICATE SLAG

UR - http://www.scopus.com/inward/record.url?scp=85061739760&partnerID=8YFLogxK

U2 - 10.3390/min9010039

DO - 10.3390/min9010039

M3 - Article

VL - 9

JO - Minerals

JF - Minerals

SN - 2075-163X

IS - 1

M1 - 39

ER -

ID: 32317390