Effect of rare earth oxide on the crystallization behavior of CaO-Al2O3-based mold flux for rare earth heat-resistant steel continuous casting

Qi Jie; Liu Chengjun; Liu Hao; Li Chen; Jiang Maofa

首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Effect of rare earth oxide on the crystallization behavior of CaO-Al2O3-based mold flux for rare earth heat-resistant steel continuous casting

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Effect of rare earth oxide on the crystallization behavior of CaO-Al2O3-based mold flux for rare earth heat-resistant steel continuous casting

机译：稀土氧化物对稀土耐热钢连续铸造CaO-Al2O3基霉菌通量结晶行为的影响

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New CaO-Al2O3-based mold flux for rare earth steel continuous casting was devised to restrain the slag-steel interface reaction. The effect of Ce2O3 on the crystallization behavior were investigated. The continuous cooling transformation tests show that the addition of Ce2O3 not only reduces the critical cooling rate of the mold flux but also reduces the initial crystallization temperature. Besides, the distribution of the initial crystallization temperature became more stable. The temperature time transformation tests show that the crystallization incubation time is slightly increased, the addition of Ce2O3 inhibit the isothermal crystallization process to a certain extent. The crystalline phases changed from LiAlO2+CaO to LiAlO2+CaCeAlO4. The precipitation of CaO was restrained by adding Ce2O3. With the combination of Ca2+, Ce3+, and [AlO6(9)(-)]octahedron units, CaCeAlO4 formed and precipitated in the crystallization process. Besides inhibiting the crystallization of CaO-Al2O3-based mold flux, adding rare earth oxide also can reduce the viscosity and the breaking temperature.

机译：为了抑制渣-钢界面反应，研制了新型CaO-Al2O3基稀土钢连铸保护渣。研究了Ce2O3对结晶行为的影响。连续冷却转变试验表明，Ce2O3的加入不仅降低了保护渣的临界冷却速率，而且降低了保护渣的初始结晶温度。此外，初始结晶温度的分布变得更加稳定。温度-时间转变试验表明，结晶孕育时间略有增加，Ce2O3的加入在一定程度上抑制了等温结晶过程。结晶相由LiAlO2+CaO转变为LiAlO2+CaCeAlO4。Ce2O3的加入抑制了CaO的析出。在结晶过程中，Ca~（2+）、Ce~（3+）和[AlO6（9）（）]八面体单元的结合形成并沉淀CaCeAlO4。除了抑制CaO-Al2O3基保护渣的结晶外，添加稀土氧化物还可以降低粘度和断裂温度。

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《Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites》 |2021年第1期|共8页
作者
Qi Jie; Liu Chengjun; Liu Hao; Li Chen; Jiang Maofa;
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作者单位

Northeastern Univ Minist Educ Key Lab Ecol Met Multimetall Ores Shenyang 110819 Liaoning Peoples R China;

Northeastern Univ Minist Educ Key Lab Ecol Met Multimetall Ores Shenyang 110819 Liaoning Peoples R China;

Northeastern Univ Minist Educ Key Lab Ecol Met Multimetall Ores Shenyang 110819 Liaoning Peoples R China;

Northeastern Univ Minist Educ Key Lab Ecol Met Multimetall Ores Shenyang 110819 Liaoning Peoples R China;

Northeastern Univ Minist Educ Key Lab Ecol Met Multimetall Ores Shenyang 110819 Liaoning Peoples R China;

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正文语种 eng
中图分类非晶态和类晶态;
关键词
Rare earth; Crystallization behavior; CaO-Al(2)O(3)( )based; Mold flux; Continuous casting;

机译：稀土;结晶行为;CaO-Al（2）O（3）（）基于;模具助焊剂;连续铸造;

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专利

1. Effects of Rare Earth Oxide on Viscosity of Mold Fluxes for Continuous Casting [J] . Wang Deyong, Jiang Maofa, Liu Chengjun Journal of rare earths . 2005,第1期

机译：稀土氧化物对连铸结晶器熔剂粘度的影响
2. Effects of Rare Earth Oxide on Viscosity of Mold Fluxes for Continuous Casting [J] . Wang Deyong, Jiang Maofa, Liu Chengjun Journal of rare earths . 2005,第1期

机译：稀土氧化物对连铸结晶器熔剂粘度的影响
3. Effect of CeO2 on heat transfer and crystallization behavior of rare earth alloy steel mold fluxes [J] . Cai Ze-yun, Song Bo, Li Long-fei, International Journal of Minerals,Metallurgy and Materials . 2019,第5期

机译：CEO2对稀土合金钢霉菌通量传热和结晶行为的影响
4. Crystallization Properties of New Mold Flux for Rare Earth Heat-Resistant Steel Continuous Casting [C] . Jie Qi, Chengjun Liu, Maofa Jiang China Symposium on Sustainable Steelmaking Technology;Chinese Society of Metals . 2018

机译：稀土耐热钢连铸新模具保护渣的结晶性能
5. Photoluminescence properties of rare earth niobium containing oxides and flux synthesis of rare earth transition metal containing oxides. [D] . Shan, Zhichao. 2011

机译：含稀土铌的氧化物的光致发光性质和含稀土过渡金属的氧化物的通量合成。
6. Phase Equilibria in Systems Involving the Rare-Earth Oxides. Part II. SolidState Reactions in Trivalent Rare-Earth Oxide Systems [O] . S. J. Schneider, R. S. Roth 1960

机译：涉及稀土氧化物的系统中的相平衡。第二部分固体三价稀土氧化物系统中的状态反应
7. Crystallization Characteristics of CaO-Al2O3-Based Mold Flux and Their Effects on In-Mold Performance during High-Aluminum TRIP Steels Continuous Casting [O] . Cheng-Bin Shi, Myung-Duk Seo, Jung-Wook Cho, 2014

机译：基于CaO-Al2O3的模拟特性的霉菌通量及其对高铝跳闸钢连续铸造过程中的模具性能的影响
8. A Study of Secondary Molecular Ion Formation in Rare Earths and Rare Earth Oxides [R] . Hodul, D. T., Harris, W. C., Morrison, G. H. 1980

机译：稀土和稀土氧化物中二次分子离子形成的研究

Effect of rare earth oxide on the crystallization behavior of CaO-Al2O3-based mold flux for rare earth heat-resistant steel continuous casting

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