Experimental determination and thermodynamic optimization of the CuCl–ZnCl2, ZnCl2–FeCl3, CuCl–FeCl3, CuCl–CuCl2, FeCl2–FeCl3, FeCl2–CuCl2 and CuCl–PbCl2 phase equilibria

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@article{ed3ea05b41a045a3a373e786c9afb3b9,
title = "Experimental determination and thermodynamic optimization of the CuCl–ZnCl2, ZnCl2–FeCl3, CuCl–FeCl3, CuCl–CuCl2, FeCl2–FeCl3, FeCl2–CuCl2 and CuCl–PbCl2 phase equilibria",
abstract = "In copper flash smelting, flue dust causes corrosion problems in the heat recovery boiler of the gas train due to formation of dust accretions on the boiler walls. Within these, presence of heavy metal chlorides results in formation of molten salt deposits causing rapid corrosion. CuCl–ZnCl2, FeCl3–ZnCl2 and CuCl–FeCl3 systems were studied experimentally by equilibration-quenching, scanning electron microscopy and energy-dispersive X-ray spectroscopy in order to evaluate melting behaviour of these chlorides, typically present in the corrosive dust deposits. In addition, CuCl–PbCl2, CuCl–CuCl2, FeCl2–FeCl3 and CuCl2–FeCl2 phase diagrams were optimized incorporating and evaluating all available phase diagram and thermodynamic data on the systems. The modified quasi-chemical model was used to describe the thermodynamic properties of molten phases and compound energy formalism was used to model the terminal solid solutions. The calculated phase diagrams are presented and compared with experimental observations as well as with all available phase diagram data from existing literature.",
keywords = "Chloride solutions, Equilibration-quenching method, Phase diagram, Thermodynamic modelling",
author = "Hanna Viitala and Pekka Taskinen and Daniel Lindberg",
year = "2019",
month = "12",
day = "1",
doi = "10.1016/j.calphad.2019.101667",
language = "English",
volume = "67",
journal = "Calphad: Computer Coupling of Phase Diagrams and Thermochemistry",
issn = "0364-5916",

}

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TY - JOUR

T1 - Experimental determination and thermodynamic optimization of the CuCl–ZnCl2, ZnCl2–FeCl3, CuCl–FeCl3, CuCl–CuCl2, FeCl2–FeCl3, FeCl2–CuCl2 and CuCl–PbCl2 phase equilibria

AU - Viitala, Hanna

AU - Taskinen, Pekka

AU - Lindberg, Daniel

PY - 2019/12/1

Y1 - 2019/12/1

N2 - In copper flash smelting, flue dust causes corrosion problems in the heat recovery boiler of the gas train due to formation of dust accretions on the boiler walls. Within these, presence of heavy metal chlorides results in formation of molten salt deposits causing rapid corrosion. CuCl–ZnCl2, FeCl3–ZnCl2 and CuCl–FeCl3 systems were studied experimentally by equilibration-quenching, scanning electron microscopy and energy-dispersive X-ray spectroscopy in order to evaluate melting behaviour of these chlorides, typically present in the corrosive dust deposits. In addition, CuCl–PbCl2, CuCl–CuCl2, FeCl2–FeCl3 and CuCl2–FeCl2 phase diagrams were optimized incorporating and evaluating all available phase diagram and thermodynamic data on the systems. The modified quasi-chemical model was used to describe the thermodynamic properties of molten phases and compound energy formalism was used to model the terminal solid solutions. The calculated phase diagrams are presented and compared with experimental observations as well as with all available phase diagram data from existing literature.

AB - In copper flash smelting, flue dust causes corrosion problems in the heat recovery boiler of the gas train due to formation of dust accretions on the boiler walls. Within these, presence of heavy metal chlorides results in formation of molten salt deposits causing rapid corrosion. CuCl–ZnCl2, FeCl3–ZnCl2 and CuCl–FeCl3 systems were studied experimentally by equilibration-quenching, scanning electron microscopy and energy-dispersive X-ray spectroscopy in order to evaluate melting behaviour of these chlorides, typically present in the corrosive dust deposits. In addition, CuCl–PbCl2, CuCl–CuCl2, FeCl2–FeCl3 and CuCl2–FeCl2 phase diagrams were optimized incorporating and evaluating all available phase diagram and thermodynamic data on the systems. The modified quasi-chemical model was used to describe the thermodynamic properties of molten phases and compound energy formalism was used to model the terminal solid solutions. The calculated phase diagrams are presented and compared with experimental observations as well as with all available phase diagram data from existing literature.

KW - Chloride solutions

KW - Equilibration-quenching method

KW - Phase diagram

KW - Thermodynamic modelling

UR - http://www.scopus.com/inward/record.url?scp=85072228292&partnerID=8YFLogxK

U2 - 10.1016/j.calphad.2019.101667

DO - 10.1016/j.calphad.2019.101667

M3 - Article

VL - 67

JO - Calphad: Computer Coupling of Phase Diagrams and Thermochemistry

JF - Calphad: Computer Coupling of Phase Diagrams and Thermochemistry

SN - 0364-5916

M1 - 101667

ER -

ID: 37054296