温度对精炼渣碳酸化效果影响分析

硅酸盐通报 ›› 2020, Vol. 39 ›› Issue (12): 3905-3912.

温度对精炼渣碳酸化效果影响分析

方明航¹, 伊元荣^1,2,3, 马文青¹, 马忠乐¹, 白书齐¹, 蔺悦¹, 杜昀聪¹

1.新疆大学资源与环境科学学院,乌鲁木齐 830046;
2.新疆大学绿洲教育部重点实验室,乌鲁木齐 830046;
3.智慧城市与环境建模自治区高校重点实验室,乌鲁木齐 830046

发布日期:2021-02-01
通讯作者: 伊元荣,博士,副教授。E-mail:yyrhyw@163.com
作者简介:方明航(1998—),男,硕士研究生。主要从事精炼渣资源化利用研究。E-mail: 984089755@qq.com
基金资助:
国家自然科学基金(51868072);新疆自然科学基金(2017D01C024)

Influence of Temperature on Carbonation Effect of Refining Slag

FANG Minghang¹, YI Yuanrong^1,2,3, MA Wenqing¹, MA Zhongle¹, BAI Shuqi¹, LIN Yue¹, DU Yuncong¹

1. College of Resources and Environmental Sciences, Xinjiang University, Urumqi 830046, China;
2. Key Laboratory of Oasis Ministry of Education, Xinjiang University, Urumqi 830046, China;
3. Key Laboratory of Smart City and Environmental Modeling Autonomous Region, Urumqi 830046, China

Published:2021-02-01

摘要/Abstract

摘要： 为了有效改善精炼渣的安定性及致密性问题,采用正交试验探讨精炼渣碳酸化过程,以温度为单一影响因素,考察碳酸化粒度分布,结合XRD,SEM,FT-IR,TG-DTA等手段对精炼渣碳酸化效果进行探讨。结果表明,精炼渣碳酸化各因素主次关系为:粒径>CO₂通气量>反应温度>转速>液固比;碳酸化后精炼渣中f-CaO、Ca₂SiO₄、Ca₃SiO₅、12CaO·7Al₂O₃消失,CaCO₃晶型增加明显,且以方解石为主;不同温度(20 ℃、40 ℃、60 ℃、80 ℃)碳酸化后精炼渣总的热分解失重百分率分别为:35.26%、35.24%、34.36%和27.29%。

关键词: 精炼渣, 碳酸化效果, 温度, 正交试验, 表征分析

Abstract: With the orthogonal tests, the refining slags carbonation process to improve their stability and compactness effectively were researched. In the experiments in which the temperature was the dependent variable, the size distribution of carbonation was investigated. XRD, SEM, FT-IR, and TG-DTA were used to study the refining slags carbonation effect. The results show the factors in the carbonation of refining slags with descending significance: particle size, CO₂ ventilation, reaction temperature, rotating speed, and liquid-solid ratio. After carbonation, f-CaO, Ca₂SiO₄, Ca₃SiO₅, and 12CaO·7Al₂O₃ in the refining slags disappeare, which are replaced with calcite-dominated crystalline CaCO₃. After carbonation at different temperatures (20 ℃, 40 ℃, 60 ℃, and 80 ℃), the total percentage of weight loss in the thermal decomposition of refining residue are 35.26%, 35.24%, 34.36%, and 27.29%, respectively.

Key words: refining slag, carbonation effect, temperature, orthogonal test, characterization analysis

中图分类号:

TF524

方明航, 伊元荣, 马文青, 马忠乐, 白书齐, 蔺悦, 杜昀聪. 温度对精炼渣碳酸化效果影响分析[J]. 硅酸盐通报, 2020, 39(12): 3905-3912.

FANG Minghang, YI Yuanrong, MA Wenqing, MA Zhongle, BAI Shuqi, LIN Yue, DU Yuncong. Influence of Temperature on Carbonation Effect of Refining Slag[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2020, 39(12): 3905-3912.

参考文献

[1] 陈林.转炉钢渣钙基活性组元选择性浸出研究[D].昆明:昆明理工大学,2018:2-3.
[2] 杜昀聪,伊元荣,何秉宇.LF精炼渣物化特性及综合利用[J].环境科学与技术,2019,42(4):88-94+102.
[3] 彭情亮,唐萍,文光华,等.LF热态钢渣循环利用炉渣成分控制[J].钢铁,2013,48(7):84-88.
[4] 夏俊双.LF炉渣冷态压球循环利用的试验研究[J].中国高新技术企业,2014(4):74-76.
[5] 解养国,吴耀光,胡玉畅,等.LF炉热态钢渣循环利用技术的应用[J].中国冶金,2008,18(7):32-34.
[6] 丁广友,徐志荣,史翠薇,等.LF热态钢渣循环再利用技术的开发与应用[J].炼钢,2006,22(4):12-15.
[7] Manso J M, Losanez M, Polanco J A, et al. Ladle furnace slag in construction[J]. Journal of Materials in Civil Engineering, 2005, 17(5): 513-518.
[8] Manso J M, Ortega-López V, Polanco J A, et al. The use of ladle furnace slag in soil stabilization[J]. Construction and Building Materials, 2013, 40: 126-134.
[9] Lancellotti I, Ponzoni C, Bignozzi M C,et al. Incinerator bottom ash and ladle slag for geopolymers preparation[J]. Waste and Biomass Valorization, 2014, 5(3): 393-401.
[10] Serjun V Z, Mladenovic A, Mirtic B, et al. Recycling of ladle slag in cement composites: environmental impacts[J]. Waste Management, 2015, 43: 376-385.
[11] 涂茂霞,雷泽,吕晓芳,等.水淬钢渣碳酸化固定CO₂[J].环境工程学报,2015,9(9):4514-4518.
[12] 张林菊,吴昊泽,叶正茂,等.正交实验钢渣碳化工艺条件[J].济南大学学报(自然科学版),2009,2(2):127-130.
[13] 伊元荣,韩敏芳.钙基固体废弃物湿法捕获二氧化碳的反应特性[J].煤炭学报,2012,37(7):1205-1210.
[14] 张慧宁,李辉,董建宏,等.电炉渣常压下碳酸化反应过程表面覆盖模型构建[C]//第十一届中国钢铁年会论文集.北京,2017:908-915.
[15] 孔祥辉,陈韧,李玲玲,等.转炉渣吸附CO₂反应研究[J].炼钢,2019,35(2):66-69+74.
[16] Chang E E, Pan S Y, Chen Y H, et al. Accelerated carbonation of steelmaking slags in a high-gravity rotating packed bed[J]. Journal of Hazardous Materials, 2012, 227/228: 97-106.
[17] 潘凯.钢渣碳酸化固定二氧化碳及制备建材产品应用研究[D].南宁:广西大学,2014:20-20.
[18] Zhang D, Ghouleh Z, Shao Y X. Review on carbonation curing of cement-based materials[J]. Journal of CO₂ Utilization, 2017, 21: 119-131.
[19] 伊元荣.含碱工业固体废弃物捕获CO₂反应特性与机理研究[D].北京:中国矿业大学(北京),2012:69-70.
[20] 任国宏,廖洪强,吴海滨,等.粉煤灰、电石渣及其配合物碳酸化特性[J].环境工程学报,2018,12(8):2295-2300.
[21] 李智虎,孙硕.钢渣超细粉的粒度分布与均匀程度的研究[J].硅酸盐通报,2019,38(4):1171-1176.
[22] 张晓蕾,邱勇波.球霰石碳酸钙的制备及其稳定性研究[J].无机盐工业,2018,50(2):46-49.
[23] 刘泽,周瑜,孔凡龙,等.碱激发矿渣基地质聚合物微观结构与性能研究[J].硅酸盐通报,2017,36(6):1830-1834.
[24] 杜昀聪,伊元荣,白书齐,等.LF精炼渣碳酸化过程Ca赋存状态转变[J].钢铁研究学报,2020,32(3):195-203.
[25] Jo H, Lee M G, Park J, et al. Preparation of high-purity nano-CaCO₃ from steel slag[J]. Energy, 2017, 120: 884-894.