Phase equilibria in the ZnO-MgO-SiO2 and PbO-ZnO-MgO-SiO2 systems for characterizing MgO-based refractory - slag interactions

被引：4

作者：

Abdeyazdan, Hamed ^{[1
,2
]}

Shevchenko, Maksym ^{[1
]}

Chen, Jiang ^{[1
]}

Hayes, Peter C. ^{[1
]}

Jak, Evgueni ^{[1
]}

机构：

[1] Univ Queensland, Pyrometallurgy Innovat Ctr PYROSEARCH, Sch Chem Engn, Brisbane, Qld 4072, Australia

[2] Univ Queensland, Room 342,1016 Banksia Bldg,Long Pocket Campus,80 M, Brisbane, Qld 4072, Australia

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2024年 / 44卷 / 01期

基金：

澳大利亚研究理事会;

关键词：

Refractory; Corrosion; Magnesia; Silica; Slag; Phase equilibria; QUASI-CHEMICAL MODEL; SUPERCOOLED LIQUIDS; CATION DISTRIBUTION; MAGNESIUM-OXIDE; SILICON DIOXIDE; HEAT-CAPACITIES; PBO-ZNO; TEMPERATURE; OLIVINE; IMMISCIBILITY;

D O I：

10.1016/j.jeurceramsoc.2023.08.036

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：

An integrated experimental and thermodynamic modelling investigation of the phase equilibria in the ZnO-MgOSiO2 and PbO-ZnO-MgO-SiO2 systems in air has been undertaken for characterizing the effect of Zn on MgObased refractory - slag interactions in the lead processing reactors. New experimental phase equilibria and liquidus data at 725-1740 degrees C were obtained using high-temperature equilibration of oxide powder mixtures followed by rapid quenching of the samples. Electron probe X-ray microanalysis was used to determine the compositions of the phases present at equilibrium conditions. Wide ranges of solid solutions were identified for periclase (Mg,Zn)O, zincite (Zn,Mg)O, olivine (Mg,Zn)2SiO4, willemite (Zn,Mg)2SiO4, pyroxene (Mg,Zn)SiO3, larsenite Pb(Zn,Mg)SiO4, barysilite Pb8(Zn,Mg)Si6O21 and melilite Pb2(Zn,Mg)Si2O7 phases, indicating possible stabilization of refractories in the presence of ZnO in slag. The experimental results were used for optimization of the parameters in a thermodynamic database that is subsequently used to describe the Pb/Cu-containing multicomponent multi-phase system for characterizing slag-refractory interactions.

引用

页码：510 / 531

页数：22

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