Effect of Iron Oxides on Activity of Calcium Aluminate Clinker in CaO-Al2O3-SiO2 System

被引：8
作者：
Yu, Hai-yan [1 ]
Pan, Xiao-lin [1 ]
Liu, Bao-wei [2 ]
Wang, Bo [1 ]
Bi, Shi-wen [1 ]
机构：
[1] Northeastern Univ, Sch Met & Mat, Shenyang 110004, Liaoning, Peoples R China
[2] CHALCO, Guangxi Branch, Baise 531400, Guangxi, Peoples R China
来源：
JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL | 2014年 / 21卷 / 11期
基金：
中国国家自然科学基金;
关键词：
FeO; Fe2O3; sintering; leaching; calcium aluminate; CaO-Al2O3-SiO2; system; TRICALCIUM ALUMINATE; SOLID-SOLUTIONS; KINETICS; POWDER; COMPOSITES; ACTIVATION; MIXTURES; NA2O;
D O I：
10.1016/S1006-706X(14)60173-4
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The sintering characteristics at 1350 degrees C and leaching property at 80 degrees C of calcium aluminate clinkers in the CaO-Al2O3-SiO2 (C-A-S) system with different additions of FeO and Fe2O3 were investigated. FeO inhibits the conversion of beta-Ca2SiO4 to gamma-Ca2SiO4 and makes the clinker not pulverizable. FeO and Fe2O3 inhibit the formation of CaAl2O4, but promote the formation of Ca12Al14O33. The interplanar spacing at (2 1 1) crystal face of Ca12Al14O33 in the clinker increases with the increase of FeO addition, which indicates that FeO forms solid solutions in Ca12Al14O33. The clinkers with Fe2O3 addition form a new phase Ca2Fe2O3, and the amount of Ca2Fe2O3 increases with the increase of Fe2O3 addition. Both FeO and Fe2O3 do not affect the Al2O3 leaching rate of calcium aluminate clinker in sodium carbonate solution, but they increase the molar ratio of caustic Na2O to Al2O3 in the leached liquor.
引用
收藏
页码：990 / 994
页数：5
相关论文
共 50 条
  • [31] High-temperature mass spectrometric study of the thermodynamic properties of the CaO-Al2O3-SiO2 system
    Stolyarova, VL
    Shornikov, SI
    Shultz, MM
    HIGH TEMPERATURE AND MATERIALS SCIENCE, 1996, 36 (01): : 15 - 35
  • [32] Phase field simulation study of the dissolution behavior of Al2O3 into CaO-Al2O3-SiO2 slags
    Liu, Jingjing
    Zou, Ji
    Guo, Muxing
    Moelans, Nele
    COMPUTATIONAL MATERIALS SCIENCE, 2016, 119 : 9 - 18
  • [33] Dissolution Mechanism of Indium in CaO-Al2O3-SiO2 Slag at Low Silica Region
    Ko, Kyu Yeol
    Park, Joo Hyun
    METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE, 2012, 43 (03): : 440 - 442
  • [34] Dissolution Mechanism of Indium in CaO-Al2O3-SiO2 Slag at Low Silica Region
    Kyu Yeol Ko
    Joo Hyun Park
    Metallurgical and Materials Transactions B, 2012, 43 : 440 - 442
  • [35] Joining of SiC ceramics using CaO-Al2O3-SiO2 (CAS) glass ceramics
    Sun, Z.
    Chen, X.
    Mao, Y.
    Zhang, L. X.
    Feng, J. C.
    JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2020, 40 (02) : 267 - 275
  • [36] Mineral transition and formation mechanism of calcium aluminate compounds in CaO-Al2O3-Na2O system during high-temperature sintering
    Yu, Hai-yan
    Pan, Xiao-lin
    Tian, Yong-pan
    Tu, Gan-feng
    INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS, 2020, 27 (07) : 924 - 932
  • [37] Microstructure and properties of ZnO doped CaO-Al2O3-SiO2 ceramic for LTCC applications
    Qing, Zhenjun
    Li, Bo
    Li, Yingxiang
    Li, Hao
    Zhang, Shuren
    JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 2015, 26 (03) : 1512 - 1517
  • [38] Preparation and characterisation of sodium chloride-doped CaO-Al2O3-SiO2 system glass-ceramics
    Cao, Kai-Qi
    Wang, Hong-Yang
    Zhang, Guo-Hua
    CANADIAN METALLURGICAL QUARTERLY, 2024,
  • [39] Effect of melt structure property on Al2O3 activity in CaO-SiO2-Al2O3-MgO system for blast furnace slag with different Al2O3 content
    Hu, Xinguang
    Shen, Fengman
    Zheng, Haiyan
    Guo, Yongchun
    Jiang, Xin
    Gao, Qiangjian
    METALLURGICAL RESEARCH & TECHNOLOGY, 2021, 118 (05)
  • [40] Comparison between measured CaO and Al2O3 normalised to CaO-Al2O3 in top slag, calcium aluminate inclusions and results of theoretical calculations
    Riyahimalayeri, K.
    Oelund, P.
    Selleby, M.
    IRONMAKING & STEELMAKING, 2013, 40 (05) : 369 - 375
12345