包钢高炉渣中特殊成分对钢渣自粉化行为的影响

陈银胜; 罗果萍; 郝帅; 任杰; 安胜利; 柴轶凡

doi:10.3969/j.issn.1000-6532.2024.04.025

包钢高炉渣中特殊成分对钢渣自粉化行为的影响

内蒙古科技大学　材料与冶金学院，内蒙古　包头　014010

基金项目: 国家重点研发计划项目（2020YFC1909100；2020YFC1909105）

详细信息

作者简介: 陈银胜（1995-），男，硕士，研究方向为冶金资源综合利用

通讯作者: 罗果萍（1964-），女，博士，教授，研究方向为冶金资源综合利用

中图分类号: TD983

收稿日期: 2021-11-25

刊出日期: 2024-08-25

Effect of Special Components in Blast Furnace Slag of Baotou Iron and Steel Company on Self-pulverization Behavior of Steel Slags

Inner Mongolia University of Science and Technology, College of Material and Metallurgy, Baotou 014010, Inner Mongolia, China

More Information

Corresponding author: LUO Guoping, luoguoping3@126.com

Received Date: 25 November 2021

Publish Date: 25 August 2024

摘要

摘要:
这是一篇冶金工程领域的文章。我国钢渣累计堆存量大，给资源和环境造成巨大压力。本文提出“应用熔融高炉渣与钢渣混合以实现钢渣自粉化”的新思路，就包钢高炉渣中特殊成分（CaF₂和CeO₂）对钢渣自粉化的影响机理进行系统研究。以分析纯CaO、SiO₂、CaF₂、CeO₂为原料，按n（CaO）∶n（SiO₂）=2∶1的配料制备了纯C₂S试样，接着分别掺入不同质量分数的CaF₂和CeO₂，将试样在1 450 ℃恒温焙烧1 h后随炉冷却，探究CaF₂和CeO₂对C₂S自粉化行为的影响规律。结果表明，将CaF₂掺入C₂S中，当CaF₂含量低于2.5%时，对C₂S的自粉化几乎没有影响，但在CaF₂含量超过2.5%时，试样出现了不同程度的结块现象，影响了C₂S的自粉化，考虑到过量的CaF₂会对环境产生影响，因此CaF₂的掺入量应控制在2.5%以下；将CeO₂掺入C₂S中，当CeO₂含量为0.25%时，C₂S仍能完全自粉化，但CeO₂含量超过0.5%时，C₂S不再出现自粉化现象，因此CeO₂含量必须低于0.25%，C₂S自粉化效果较好。
- 冶金工程 /
- 炼钢渣 /
- 高炉渣 /
- 特殊成分 /
- 硅酸二钙 /
- 自粉化
Abstract:
This is an article in the field of metallurgical engineering, which proposed a new idea of mixing molten blast furnace slag with steel slag to achieve self-pulverization of steel slag, and systematically studied the influence mechanism of special components of CaF₂ and CeO₂ in blast furnace slag of Baotou Iron and Steel Company on the self-pulverization of steel slags. Using analytically pure CaO, SiO₂, CaF₂ and CeO₂ as starting materials, pure C₂S specimens were prepared with n ( CaO ) : n ( SiO₂ ) = 2 : 1, then different mass fractions of CaF₂ and CeO₂ were added, respectively. The effect of CaF₂ and CeO₂ on the self-pulverization behavior of C₂S was investigated by calcining the specimen at 1 450 °C for 1 h and cooling with the furnace. The results showed when CaF₂ was incorporated into C₂S and the content of CaF₂ was less than 2.5%, it had little effect on the self-pulverization of C₂S. However, when the content of CaF₂ was more than 2.5%, the specimen had different degrees of agglomeration, which affected the self-pulverization of C₂S. Considering that excessive CaF₂ would affect the environment, the content of CaF₂ should be controlled below 2.5%. When CeO₂ incorporated into C₂S and the content was 0.25%, C₂S could still be completely self-pulverized, but when the CeO₂ content was more than 0.5%, C₂S no longer self-pulverized.Therefore, the CeO₂ content must be less than 0.25 %, and the self-pulverization effect of C₂S was relatively good.
- Metallurgical engineering /
- Steelmaking slag /
- Blast furnace slag /
- Special components /
- Dicalcium silicate /
- Self-pulverization

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图 1 F-0、C-0焙烧试样的XRD

Figure 1.

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图 2 掺入CaF₂试样的XRD

Figure 2.

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图 3 掺入CaF₂试样的XRD

Figure 3.

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图 4 F-7焙烧试样扫描电镜形貌、面扫及点1的能谱

Figure 4.

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图 5 C-0和C-1焙烧试样的XRD

Figure 5.

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图 6 C-1～C-3焙烧试样的XRD

Figure 6.

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图 7 C-3～C-7焙烧试样的XRD

Figure 7.

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图 8 C-7焙烧试样扫描电镜形貌、面扫及点2的能谱

Figure 8.

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表 1 试样中CaF₂加入量/%

Table 1. CaF₂ addition in the specimen

外掺原料	F-0	F-1	F-2	F-3	F-4	F-5	F-6	F-7
CaF₂	-	0.5	1.0	1.5	2.5	3.5	4.5	5.0

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表 2 试样中CeO₂加入量/%

Table 2. CeO₂ addition in the specimen

外掺原料	C-0	C-1	C-2	C-3	C-4	C-5	C-6	C-7
CeO₂	-	0.25	0.50	0.75	1.00	1.25	1.50	5.00
其中，F-0、C-0样为空白样。

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表 3 基于Factsage7.1计算得到的生成物含量/g

Table 3. Product content calculated based on Factsage7.1

反应物		生成物
Ca₃Si₂O₇	CaF₂	Ca₃Si₂O₇	Ca₄Si₂F₂O₇
99.5	0.5	97.653	2.347
99.0	1.0	95.306	4.694
98.5	1.5	92.959	7.041
97.5	2.5	88.265	11.735
96.5	3.5	83.571	16.429
95.5	4.5	78.877	21.123
95.0	5.0	76.530	23.470

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参考文献(14)

[1]	高洋. 高钛高炉渣综合利用现状及展望[J]. 矿产综合利用, 2019(1):6-10.GAO Y. Present situation and prospect of comprehensive utilization of high titanium blast furnace slag[J]. Multipurpose Utilization of Mineral Resources, 2019(1):6-10. doi: 10.3969/j.issn.1000-6532.2019.01.002 GAO Y. Present situation and prospect of comprehensive utilization of high titanium blast furnace slag[J]. Multipurpose Utilization of Mineral Resources, 2019(1):6-10. doi: 10.3969/j.issn.1000-6532.2019.01.002
[2]	邓志豪, 王珏, 周云. 转炉渣系矿物相研究[J]. 安徽工业大学学报(自然科学版), 2011, 28(3):201-204.DENG Z H, WANG J, ZHOU Y. Study on mineral phase of converter slag system[J]. Journal of Anhui University of Technology (Natural Science Edition), 2011, 28(3):201-204. DENG Z H, WANG J, ZHOU Y. Study on mineral phase of converter slag system[J]. Journal of Anhui University of Technology (Natural Science Edition), 2011, 28(3):201-204.
[3]	闫英师, 李玉凤, 赵礼兵. 改性钢渣吸附重金属离子的研究现状[J]. 矿产综合利用, 2021(1):8-13.YAN Y S, LI Y F, ZHAO L B. Research status of heavy metal ions adsorption by modified steel slag[J]. Multipurpose Utilization of Mineral Resources, 2021(1):8-13. doi: 10.3969/j.issn.1000-6532.2021.01.002 YAN Y S, LI Y F, ZHAO L B. Research status of heavy metal ions adsorption by modified steel slag[J]. Multipurpose Utilization of Mineral Resources, 2021(1):8-13. doi: 10.3969/j.issn.1000-6532.2021.01.002
[4]	刘洋, 张春霞. 钢铁渣的综合利用现状及发展趋势[J]. 矿产综合利用, 2019(2):21-25.LIU Y, ZHANG C X. Comprehensive utilization situation and development trend of iron and steel slag in China and abroad[J]. Multipurpose Utilization of Mineral Resources, 2019(2):21-25. doi: 10.3969/j.issn.1000-6532.2019.02.004 LIU Y, ZHANG C X. Comprehensive utilization situation and development trend of iron and steel slag in China and abroad[J]. Multipurpose Utilization of Mineral Resources, 2019(2):21-25. doi: 10.3969/j.issn.1000-6532.2019.02.004
[5]	Gencel Osman, Karadag Omer, Oren Osman Hulusi, et al. Steel slag and its applications in cement and concrete technology: A review[J]. Construction and Building Materials, 2021, 283.
[6]	张作良, 陈韧. 转炉钢渣物相组成及其显微形貌[J]. 材料与冶金学报, 2019, 18(1):37-40.ZHANG Z L, CHEN R. Physical phase composition of converter steel slag and its micro-morphology[J]. Journal of Materials and Metallurgy, 2019, 18(1):37-40. ZHANG Z L, CHEN R. Physical phase composition of converter steel slag and its micro-morphology[J]. Journal of Materials and Metallurgy, 2019, 18(1):37-40.
[7]	林超. 石煤改质转炉钢渣自粉化及提钒的基础研究[D]. 马鞍山: 安徽工业大学, 2018.LIN C. Basic research on self-powdering and vanadium extraction from stone-coal modified converter steel slag [D]. Maanshan: Anhui University of Technology, 2018. LIN C. Basic research on self-powdering and vanadium extraction from stone-coal modified converter steel slag [D]. Maanshan: Anhui University of Technology, 2018.
[8]	林超, 高卫, 钟娜娜, 等. SiO₂改质对转炉钢渣中C₂S相优势析出及钢渣自粉化的影响[J]. 冶金工程, 2018, 5(2):77-84.LIN C, GAO W, ZHONG N N, et al. Effect of SiO₂ modification on the dominant precipitation of C₂S phase in converter steel slag and self-powdering of steel slag[J]. Metallurgical Engineering, 2018, 5(2):77-84. doi: 10.12677/MEng.2018.52011 LIN C, GAO W, ZHONG N N, et al. Effect of SiO₂ modification on the dominant precipitation of C₂S phase in converter steel slag and self-powdering of steel slag[J]. Metallurgical Engineering, 2018, 5(2):77-84. doi: 10.12677/MEng.2018.52011
[9]	冯修吉, 龙世宗. 微量离子对 $ \mathrm{\beta } $-C₂S稳定性的影响及其机理研究[J]. 硅酸盐学报, 1985(4):424-432.FENG X J, LONG S Z. Effect of trace ions on the stability of -C₂S and its mechanism[J]. Journal of Silicate, 1985(4):424-432. FENG X J, LONG S Z. Effect of trace ions on the stability of -C₂S and its mechanism[J]. Journal of Silicate, 1985(4):424-432.
[10]	邹千, 马妍, 王玺堂, 等. Ba²⁺离子掺杂对C₂S结构稳定性的影响[J]. 耐火材料, 2016, 50(4):265-268.ZOU Q, MA Y, WANG X T, et al. Effect of Ba²⁺ ion doping on the structural stability of C2S[J]. Refractory Materials, 2016, 50(4):265-268. doi: 10.3969/j.issn.1001-1935.2016.04.007 ZOU Q, MA Y, WANG X T, et al. Effect of Ba²⁺ ion doping on the structural stability of C2S[J]. Refractory Materials, 2016, 50(4):265-268. doi: 10.3969/j.issn.1001-1935.2016.04.007
[11]	王莉. 冶金工业固体废物钢渣的综合利用探讨[J]. 冶金管理, 2020(5):197-199.WANG L. Discussion on comprehensive utilization of steel slag as solid waste in metallurgical industry[J]. Metallurgical Management, 2020(5):197-199. WANG L. Discussion on comprehensive utilization of steel slag as solid waste in metallurgical industry[J]. Metallurgical Management, 2020(5):197-199.
[12]	钟侚, 蹇守卫, 柯凯. V⁵⁺及Cr³⁺掺杂对C₂S多晶型的影响机制[J]. 济南大学学报(自然科学版), 2011, 25(4):349-353.ZHONG X, JIAN S W, KE K. Mechanisms of the effects of V⁵⁺ and Cr³⁺ doping on the polycrystalline shape of C₂S[J]. Journal of Jinan University (Natural Science Edition), 2011, 25(4):349-353. ZHONG X, JIAN S W, KE K. Mechanisms of the effects of V⁵⁺ and Cr³⁺ doping on the polycrystalline shape of C₂S[J]. Journal of Jinan University (Natural Science Edition), 2011, 25(4):349-353.
[13]	许莹, 王巧玲, 胡晨光, 等. 氟化钙对重构钢渣胶凝活性和体积安定性的影响[J]. 钢铁钒钛, 2018, 39(5):86-92.XU Y, WANG Q L, HU C G, et al. Effect of calcium fluoride on the gelling activity and volume stability of reconstituted steel slag[J]. Iron and Steel Vanadium and Titanium, 2018, 39(5):86-92. XU Y, WANG Q L, HU C G, et al. Effect of calcium fluoride on the gelling activity and volume stability of reconstituted steel slag[J]. Iron and Steel Vanadium and Titanium, 2018, 39(5):86-92.
[14]	王达志, 包燕平, 王敏. CaF₂和Na₂O对钢渣含磷相析出过程的影响[A]. 中国金属学会. 第十二届中国钢铁年会论文集--2. 炼钢与连铸[C]. 中国金属学会: 中国金属学会, 2019: 7.WANG D Z, BAO Y P, WANG M. Effects of CaF₂ and Na₂O on the precipitation process of phosphorus-containing phases from steel slag[A]. Chinese Society for Metals. Proceedings of the 12th Annual Conference on Steel in China - 2. Steelmaking and Continuous Casting[C]. Chinese Society for Metals: Chinese Society for Metals, 2019: 7. WANG D Z, BAO Y P, WANG M. Effects of CaF₂ and Na₂O on the precipitation process of phosphorus-containing phases from steel slag[A]. Chinese Society for Metals. Proceedings of the 12th Annual Conference on Steel in China - 2. Steelmaking and Continuous Casting[C]. Chinese Society for Metals: Chinese Society for Metals, 2019: 7.