Experimental study of phase equilibria in the PbO-ZnO-"Fe2O3"-CaO-SiO2 system in air for high lead smelting slags (CaO/SiO2=0.35 and PbO/(CaO+SiO2)=5.0 by weight)

被引:26
作者
Jak, E [1 ]
Hayes, PC [1 ]
机构
[1] Univ Queensland, Sch Engn, Pyromet Res Ctr, PYROSEARCH, St Lucia, Qld 4072, Australia
来源
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE | 2002年 / 33卷 / 06期
基金
澳大利亚研究理事会;
关键词
Material Transaction; Zinc Ferrite; Slag System; Zincite; Dicalcium Silicate;
D O I
10.1007/s11663-002-0065-7
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Experimental studies on phase equilibria in the multicomponent system PbO-ZnO-CaO-SiO2-FeO-Fe2O3 in air have been conducted to characterize the phase relations of a complex slag system used in commercial lead oxidation smelting. The liquidus in the pseudo-ternary section ZnO-"Fe2O3"-(PbO + CaO + SiO2) with the CaO/SiO2 weight ratio of 0.35 and the PbO/(CaO + SiO2) weight ratio of 5.0 has been constructed using results of over 100 high-temperature equilibration and quenching experiments followed by electron probe X-ray microanalysis. The liquidus in this pseudoternary section contains primary phase fields of spinel (zinc ferrite) ZnxFe3-xO4+y, zincite ZnuFe1-uO, melilite PbvCa2-vZnwFe1-wSi2O7, hematite Fe2O3, magneto-plumbite PbFe10O16, and dicalcium silicate Ca2-t PbtSiO4. The laboratory results are compared with the slags obtained from an industrial reactor.
引用
收藏
页码:817 / 825
页数:9
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