Effect of Gas Atmosphere on the Phase Chemistry in the CaO-FeO-Fe2O3-SiO2 System Related to Iron Ore Sinter-making

被引：13

作者：

Chen, Jiang ^{[1
]}

Shevchenko, Maksym ^{[1
]}

Hayes, Peter Charles ^{[1
]}

Jak, Evgueni ^{[1
]}

机构：

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

来源：

ISIJ INTERNATIONAL | 2019年 / 59卷 / 05期

关键词：

iron ore sintering; oxygen partial pressure; phase equilibria; SILICO-FERRITE; ALUMINUM SFCA; CALCIUM;

D O I：

10.2355/isijinternational.ISIJINT-2018-631

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Experimental phase equilibria studies have been carried out to investigate the phase chemistry in the CaO "Fe2O3"-SiO2 system related to the iron ore sinter making in 1 atm CO2 at 1 200-1 230 degrees C. The measurements have been performed using a modified experimental technique involving high temperature equilibration and rapid quenching followed by electron probe X-ray microanalysis (EPMA). In contrast to the equilibria in air, the experimental results show that no silico-ferrite of calcium (SFC solid solution) is formed in 1 atm CO2 within the temperature range investigated; that is, the SFC phase is not stable at liquidus temperatures. The liquidus for the iron -rich corner of the CaO "Fe2O3"-SiO2 system in CO2 atmosphere for the spinel (magnetite Fe3O4) and dicalcium silicate (C2S = Ca2SiO4) primary phase fields has been proposed.

引用

页码：805 / 809

页数：5

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