Effects of Liquidus Temperature and Liquid Amount on the Fluidity of Bonding Phase and Strength of Sinter

Xin JIANG; Jidong ZHAO; Lin WANG; Haiwei AN; Qiangjian GAO; Haiyan ZHENG; Fengman SHEN

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Effects of Liquidus Temperature and Liquid Amount on the Fluidity of Bonding Phase and Strength of Sinter

机译：液相温度和液体量对粘接阶段流动性的影响及烧结强度

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Fluidity is one of the important properties of bonding phase in sintering process, because better fluidity is beneficial for improving the strength of sinter. In this work, the effects of liquidus temperature and liquid amount on the fluidity of bonding phase and the strength of sinter were investigated. The experimental results in SiO_2-Fe_2O_3-CaO system indicated that, for both SiO_2=5% and SiO_2=10%, with increasing Fe_2O_3 content (decreasing CaO content), the fluidity indices of samples first increased and then decreased. When the liquidus temperature was lower and the liquid amount was more, the fluidity index of SFC sample was higher, and vice versa. The sinter pot experimental results showed that, (1) for the iron ore with SiO_2=4.30%, the major phases in the sinter were hematite and SFCA, and the liquid SFCA phase was evenly distributed in sinter. The tumble strength of sinter was higher than 60% in a wider basicity range of 1.8-2.2. (2) For the iron ore with SiO_2= 12.42%, the olivine was another major phase, and was unevenly distributed in part of sinter. There was a peak value for tumble strength of sinter when the basicity was 2.0. The basicity was higher or lower, the tumble strength sharply decreased. The reasonable basicity of sinter with high-SiCO_2 content was difficult to determine, and was not proposed to be used in an actual sintering production. The outcomes of the present work may provide guidelines for better understanding the properties of bonding phase and improving the strength of sinter.

机译：流动性是烧结过程中粘合相的重要特性之一，因为更好的流动性有利于提高烧结强度。在这项工作中，研究了液相用温度和液体量对粘接相流动性和烧结强度的影响。 SiO_2-FE_2O_3-CAO系统的实验结果表明，对于SiO_2 = 5％和SiO_2 = 10％，随着Fe_2O_3含量的增加（降低CAO含量），样品的流动性指数首先增加，然后减少。当液相液体温度较低并且液体量更高时，SFC样品的流动指数较高，反之亦然。烧结罐实验结果表明，（1）用于SiO_2 = 4.30％的铁矿石，烧结中的主要相是赤铁矿和SFCA，液体SFCA相均匀地分布在烧结中。在更宽的碱性范围为1.8-2.2的较宽碱度范围内，烧结的倾斜强度高于60％。（2）对于使用SiO_2的铁矿石= 12.42％，橄榄石是另一个主要相，并且在烧结部分中不均匀地分布。当碱度为2.0时，烧结强度有一个峰值。碱度较高或更低，翻滚力量大幅下降。具有高SiCO_2含量的烧结烧结的合理碱度难以确定，并未提出用于实际烧结生产。本工作的结果可以提供更好地理解粘合阶段性能并提高烧结强度的指导。

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来源
《ISIJ international》 |2021年第1期|86-92|共7页
作者
Xin JIANG; Jidong ZHAO; Lin WANG; Haiwei AN; Qiangjian GAO; Haiyan ZHENG; Fengman SHEN;
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作者单位

School of Metallurgy Northeastern University Shenyang Liaoning 110819 China;

School of Metallurgy Northeastern University Shenyang Liaoning 110819 China;

Department of Mechanical Engineering Shenyang Institute of Engineering Shenyang Liaoning 110136 China;

School of Metallurgy Northeastern University Shenyang Liaoning 110819 China;

School of Metallurgy Northeastern University Shenyang Liaoning 110819 China;

School of Metallurgy Northeastern University Shenyang Liaoning 110819 China;

School of Metallurgy Northeastern University Shenyang Liaoning 110819 China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种 eng
中图分类
关键词
sinter; fluidity; tumble strength; liquidus temperature; liquid amount;

机译：烧结;流动性;滚动力量;液相温度;液体量;

Effects of Liquidus Temperature and Liquid Amount on the Fluidity of Bonding Phase and Strength of Sinter

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