某钢厂常用4种铁矿粉烧结基础特性

doi:10.13228/j.boyuan.issn1006-9356.20190471

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摘要以提高某钢厂烧结矿质量为目标,对烧结矿质量影响较大的铁矿粉高温特性进行了研究。利用FactSage 7.1热力学软件计算出铁矿粉在1 280 ℃、碱度为3.0时产生的液相量和液相黏度指数,并以热力学计算为基础采用TSJ-2型红外线快速高温烧结炉进行4种铁矿粉基础特性测定试验。试验结果表明,A、D 两种铁矿粉同化温度较高,同化性较差;C 种铁矿粉同化性较好,B种铁矿粉同化性最好。当试验温度为1 280 ℃、碱度为3.0时,A 和D两种铁矿粉的液相流动指数较低;C种铁矿粉的液相流动指数较好,B 种铁矿粉的液相流动指数最好。由FactSage 7.1热力学软件计算得出,A铁矿粉液相量为51.46%、黏度为0.031 Pa·s,B铁矿粉液相量为77.8%、黏度为0.032 Pa·s,C铁矿粉液相量为66.64%、黏度为0.035 Pa·s,D铁矿粉液相量为70.66%、黏度为0.044 Pa·s,根据流动性指数公式得出结果与试验结果相一致。

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	田硕
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	柴轶凡
	宋巍

关键词 ：铁矿粉, 同化性, 液相流动性, 热力学计算

Abstract：In order to improve the quality of sinter in a steel plant, the high-temperature characteristics of iron ore fines, which have a great influence on the quality of sinter, were studied. The liquid phase and liquid phase viscosity index of iron ore fines at 1 280 ℃ and alkalinity of 3.0 were calculated by FactSage 7.1 thermodynamics software. The TSJ-2 infrared fast high temperature sintering furnace was used to test the basic characteristics of four kinds of iron ore fine based on the thermodynamic calculation. Experiment on the determination of the basic characteristics of iron ore fines. The experimental results showed that the assimilation temperature of the two types of iron ore powders A and D was higher, the assimilation was poor, the assimilation of the C type iron ore fines was better, and the assimilation of the B type iron ore fines was the best. When the experimental temperature was 1 280 ℃ and the alkalinity was 3.0, the liquid phase flow index of the two types of iron ore powders A and D was lower, the liquid phase flow index of the C type iron ore powder was better, and the liquid phase flow index of the B type iron ore powder was the best. According to the calculation of FactSage 7.1 thermodynamic software, the A iron ore powder liquid amount of the four types of iron ore powders A, B, C and D was 51.46%, 77.8%, 66.64%, and 70.66%, respectively. And the viscosity of the four types of iron ore powders A, B, C and D was 0.031 Pa·s, 0.032 Pa·s, 0.035 Pa·s, and 0.044 Pa·s respectively. The results according to the fluidity index formula were consistent with the experimental results.

Key words： iron ore fines assimilation liquid phase fluidity thermodynamic calculation

收稿日期: 2019-10-10

基金资助:国家自然科学基金资助项目 (51664045);内蒙古自然科学基金联合项目 (2018LH05026);内蒙古自治区高等学校科学研究项目(NJZY20091)

通讯作者: 王艺慈(1975－), 女, 博士, 教授; E-mail: wangyici01060@163.com

作者简介: 田硕(1995－), 男, 硕士生; E-mail1141378519@qq.com;

引用本文:

田硕, 王艺慈, 罗果萍, 任强, 柴轶凡, 宋巍. 某钢厂常用4种铁矿粉烧结基础特性[J]. 中国冶金, 2020, 30(4): 12-17. TIAN Shuo, WANG Yi-ci, LUO Guo-ping, REN Qiang, CHAI Yi-fan, SONG Wei. Basic characteristics of four iron ore fines commonly used in steel plants[J]. China Metallurgy, 2020, 30(4): 12-17.

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http://www.zgyj.ac.cn/CN/10.13228/j.boyuan.issn1006-9356.20190471 或 http://www.zgyj.ac.cn/CN/Y2020/V30/I4/12

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