水库底泥和电石渣高温改性钢渣的研究

doi:10.11896/cldb.21040178

Abstract
Figure/Table
References
Related Citation (15)

Download:

Full Text ( PDF ) (3699KB)
Export: BibTeX | EndNote (RIS)

Abstract High-temperature modification using reservoir sediment and carbide slag was performed to study its influence on phase, structure and properties of steel slag. The physicochemical properties of raw materials, mineral constituents and microstructure of steel slag after the high-temperature modification were analyzed by X-ray fluorescence analyzer (XRF), X-ray diffraction (XRD), scanning electronic microscopy (SEM), energy dispersive spectrometry (EDS) and particle size analysis. It is found that new mineral phases such as diopside (CMS₂), ceylonite (MgFe₂O₄), gehlenite (C₂AS), tricalcium aluminate (C₃A) and magnetite (Fe₃O₄) form in the modified steel slag. The high-temperature modification promotes the decomposition of RO phase in steel slag, in which FeO is converted to magnetite (Fe₃O₄) simultaneously. The high temperature modification improves the cementitious reactivity of steel slag, and effectively reduces the dosage f-CaO and f-MgO in steel slag. When the dosage of composite modifier is 20% (m(reservoir sediment):m(carbide slag)=3:1) and the treatment temperature is 1 150 ℃, the 28 d activity index of modified steel slag is 12.2% higher than that of original steel slag, reaching 82.4%, which meets the technical requirements of GB/T 20491-2017 ‘steel slag powder used in cement and concrete' that the activity index of grade I steel slag powder is greater than or equal to 80%. The mass fraction of f-CaO and f-MgO in the original steel slag decreased to 1.21% and 1.98% respectively.

Key words： steel slag reservoir sediment carbide slag composite modifier property

Published: 10 May 2022 Online: 2022-05-09

CLC number:

TU522.3

Fund:National Key Research and Development Program of China (2018YFC1903602-01), the Natural Science Foundation of Hebei Province (E2020402079), Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources (2017SKY-WK008), State Key Laboratory of Solid Waste Resource Utilization and Energy Conservation (SWR-2019-008), Science and Technology Research and Development Plan of China Railway Construction Group Co., Ltd. (20-02a, 21-13b), Hebei Graduate Innovation Funding Project (CXZZSS2021091).

	Service
	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	WANG Changlong
	ZHAO Gaofei
	WANG Yongbo
	ZHANG Shuhua
	ZHENG Yongchao
	HUO Zekun
	WANG Shaoxi
	REN Zhenzhen
	ZOU Jiayi

Cite this article:

WANG Changlong,ZHAO Gaofei,WANG Yongbo, et al. Study on the High-temperature Modified Steel Slag Using Reservoir Sediment and Carbide Slag[J]. Materials Reports, 2022, 36(9): 21040178-7.

URL:

http://www.mater-rep.com/EN/10.11896/cldb.21040178 OR http://www.mater-rep.com/EN/Y2022/V36/I9/21040178

1 Guo J L, Bao Y P, Wang M. Waste Management, 2018, 78, 318.
2 Dhoble Y N, Ahmed S. Journal of Material Cycles and Waste Management Volume, 2018, 20, 1373.
3 Wang S, Wang C L, Wang Q H, et al. Polish Journal of Environmental Studies, 2018, 27(1), 357.
4 Cui H L, Zhang K F, Zhang G Q, et al. Acta Microscopica, 2019, 48 (4), 770.
5 Roslan N H, Ismail M, Abdul-Majid Z, et al. Construction and Building Materials, 2016, 104, 16.
6 Peng Y C, Huang C L. Journal of Zhejiang University-Science A, 2010, 11(7), 488.
7 Yüksel I. Environment, Development and Sustainability, 2017, 19, 369.
8 Humbert P S, Castro-Gomes J. Journal of Cleaner Production, 2019, 208, 448.
9 Waligora J, Bulteel D, Degrugilliers P, et al. Materials Characterization, 2012, 61(1), 39.
10 Liu S J, Hu Q Q, Zhao F Q, et al. Construction and Building Materials, 2014, 72, 15.
11 Yan P Y, Mi G G, Wang Q. Journal of Thermal Analysis and Calorimetry, 2014, 115(1), 193.
12 Liu W H, Li H, Zhu H M, et al. Materials, 2020, 13(5), 1180.
13 Mo L W, Zhang F, Deng M, et al. Cement and Concrete Composites, 2017, 83, 138.
14 Palankar N, Shankar A U R, Mithun B M. Journal of Cleaner Production, 2016, 129, 437.
15 Qiu X, Xiao S L, Yang Q, et al. Materials and Structures, 2017, 50(5), 209.
16 Guo Y C, Xie J H, Zhao J B, et al. Construction and Building Mate-rials, 2019, 204, 41.
17 Nguyen T T H, Phan D H, Mai H H, et al. Materials, 2020, 13(8), 1928.
18 Nguyen D L, Lam N T, Kim D L, et al. Composites Part B, 2020, 183, 1.
19 Lam M N T, Le D H, Jaritngam S. Construction and Building Materials, 2018, 191, 912.
20 Monosi B, Ruello M L, Sani D. Cement and Concrete Composites, 2016, 66, 66.
21 Lam M N T, Jaritngam S, Le D H. Construction and Building Materials, 2017, 154, 482.
22 Tossavainen M, Engsteom F, Yang Q, et al. Waste Management, 2007, 27(10), 1335.
23 Wu S P, Xue Y J, Ye Q S, et al. Building and Environment, 2007, 42 (7), 2580.
24 Zhang Z S, Lian F, Liao H Q, et al. Journal of University of Science and Technology Beijing, 2012, 34(12), 1379(in Chinese).
张作顺,连芳,廖洪强,等. 北京科技大学学报,2012,34(12),1379.
25 Tran A T, Tran G H, Nguyen N T H, et al. Vietnam Journal of Science and Technology, 2019, 57, 61.
26 Biskri Y, Achoura D, Chelghoum N, et al. Construction and Building Materials, 2017, 150, 167.
27 Zhang H, Wang L, Long H M. Spectroscopy and Spectral Analysis, 2018, 38(7), 2302(in Chinese).
张浩,王林,龙红明. 光谱学与光谱分析,2018,38(7),2302.
28 Mason B. Journal of Iron and Steel Institute, 1944, 11, 69.
29 Zhang Z S. High-temperature modification of steel slag and its hydration-hardening performance. Ph.D. Thesis, University of Science and Technology Beijing, China, 2013(in Chinese).
张作顺. 钢渣的高温改性及其水化硬化性能. 博士学位论文,北京科技大学,2013.