Experimental Study on the Phase Equilibrium of Copper Matte and Silica-Saturated FeO x-SiO2-Based Slags in Pyrometallurgical WEEE Processing

Min Chen, Katri Avarmaa, Lassi Klemettinen, Junjie Shi, Pekka Taskinen, Ari Jokilaakso*

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

4 Sitaatiot (Scopus)
9 Lataukset (Pure)

Abstrakti

The effects of the amphoteric and basic oxides alumina and lime on the phase equilibria of copper matte and silica-saturated slags were investigated at 1300 °C and PSO2 = 0.1 atm in a controlled CO-CO2-SO2-Ar gas atmosphere using a high-temperature isothermal equilibration technique followed by rapid quenching. The equilibrium phase compositions were obtained by Electron Probe X-ray Microanalysis. The relationship between the copper concentration in matte and the oxygen partial pressure, iron, and sulfur in matte was quantified. The pure iron-silicate slag exhibited the highest copper loss in slag, although the addition of alumina and lime decreased its value by approximately a quarter and a half, respectively, at a matte grade of 65 wt pct Cu. In contrast, copper and sulfur were highly distributed in the matte phase, and their deportment to the matte was favored by addition of alumina and lime.

AlkuperäiskieliEnglanti
Sivut1552-1563
Sivumäärä12
JulkaisuMetallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
Vuosikerta51
Numero4
Varhainen verkossa julkaisun päivämäärä2 kesäkuuta 2020
DOI - pysyväislinkit
TilaJulkaistu - 1 elokuuta 2020
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

Sormenjälki

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