Using autoclave pulverization technology to evaluate the expansion potentiality of electric arc furnace oxidizing slag
Source abstract
Abstract
In this study, four different sources of electric arc furnace oxidizing slag (EOS) were selected. The relationship between the composition of EOS and its expansibility was analyzed, and an autoclave pulverization rate test technique was developed to evaluate the expansibility of EOS. When the MgO/(FeO+MnO) in EOS is <1 and the content of f-CaO does not exceed 0.40%, this can be used as the threshold for the lack of expansibility of EOS. The agglomeration phenomenon of particles is the factor affecting the autoclave pulverization rate test. For EOS with a particle size of #30-#100, the most obvious agglomeration phenomenon was produced in the autoclave environment, and its pulverization rate was greatly reduced. When the particle size of EOS was increased to #8-#30, the agglomeration phenomenon improved. When the particle size was increased to #4-#8, no obvious agglomeration problem was found. Thus, taking #4-#8 as the sample size of the autoclave pulverization rate test, after 3 h in the environment of 2.0±0.07 MPa (a corresponding temperature of 216±2℃), the pulverization rate did not exceed 1.7%, and the EOS was judged to have no expansibility.
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Research context
OpenAlex topics: Concrete and Cement Materials Research · Metallurgical Processes and Thermodynamics · Minerals Flotation and Separation Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (39)
Show source-provided references
1. L. Chen, Utilization of electric arc furnace oxidizing slag as concrete aggregates, Department of Civil Engineering, National Central University, Dissertation, 2003.
2. J. Geiseler, R. Schlosser, Investigations concerning structure and properties of steel slags Proc. 3rd Int. Congr. Molten Slag Fluxes 1988 40 42.
3. The soundness of steel slag with different free CaO and MgO contents10.1016/j.conbuildmat.2017.06.077 ↗
4. Discussion about volume expansion problem of industrial by-products as concrete material and precautions
5. Determination of f-CaO in furnace slag by EDTA complexometric titration
6. H.Z. Wang, Furnace slag Analysis, Science Press, CSM 08 01 20 05–2005, June 2006.
7. GB/T 176-2008, Methods for chemical analysis of cement, National Standards of the People’s Republic of China, Article 38.
8. C. Zhang, S.F. Chi, A measuring method for f-CaO in furnace slag, China National Intellectual Property Administration, Patent Publication Number CN 102401822 A, April 2012.
9. B. Wang, A Study of determination and stability of f-CaO and f-MgO in steel slag, Beijing University of Chemical Technology, a master’s thesis for Department of Materials Science and Engineering, Beijing, 2007.
10. Determination of f-CaO in steel slag by ethylene glycol-TG method
11. Determination of free calcium oxide in steel slag by inductively coupled plasma atomic emission spectrometry after leaching with sucrose solution
12. C.R. Guo, Y.H. Sun, Y.Y. Lee, H. Xu, Wang, H.H., E.C. Pu, L.F. Meng, H.H. Fang, A measuring method for f-CaO content in steel slag, China National Intellectual Property Administration, Patent Publication Number CN 103558113 A, February 2014.
13. A study of conductivity method for continuous measurement of free CaO and MgO
14. C.L. Yang, C.H. Liu, K.L. Chu, B. Wang, C.F. Lu, An analytic test method for f-MgO content in steel slag, China National Intellectual Property Administration, Patent Publication Number CN 101865856 A, October 2010.
15. C.H. Liu, S.Y. Cheng, M. Lee, C. Tu, W. Lei, A measuring method for f-MgO content in steel slag, China National Intellectual Property Administration, Patent Publication Number CN 102914619 B, February 2015.
16. Determination of f-CaO content in steel slag, Chinese
17. C. Zhang, S.G. Chi, Y.H. Bing, A measuring method for f-MgO in furnace slag, China National Intellectual Property Administration, Application Publication Number CN 102269709 A, December 2011.
18. T. Chen, S., Chao, K. Duan, A sensitive, reliable, accurate and efficient test method for f-MgO content in furnace slag, China National Intellectual Property Administration, Application Publication Number CN 104062279 A, September 2014.
19. C.H. Liu, C. Tu, M. Lee, S.Y. Cheng, W. Lei, Determination of f-MgO content in steel slag by carbonization, China National Intellectual Property Administration, Application Publication Number CN 103197028 A, July 2013.
20. Analysis of testing methods for volume stability evaluation of steel slag sand
21. The beta gamma dicalcium silicate phase transformation and its significance on air cooled stability
22. C.P. Chiang, Implementation of carbonation process for carbon dioxide capture and steelmaking slag utilization, National Taiwan University, 2014.
23. Mineralogical composition of EAF slag and stabilised AOD slag aggregates and dimensional stability of slag aggregate concretes10.1016/j.conbuildmat.2016.04.036 ↗
24. Dimensional stability of electric arc furnace slag in civil engineering applications10.1016/j.jclepro.2018.09.122 ↗
25. Hydration properties of steel slag under autoclaved condition10.1007/s10973-015-4397-3 ↗
26. Steel furnace slag aggregate expansion and hardened concrete properties10.1016/j.cemconcomp.2015.04.006 ↗
27. Determination of the expansion force of coarse steel slag aggregate10.1016/j.conbuildmat.2010.04.004 ↗
28. Feasibility of stabilizing expanding property of furnace slag by autoclave method10.1016/j.conbuildmat.2014.06.082 ↗
29. GB/T 24175-2009, Test method for stability of steel slag. National Standards of the People’s Republic of China.
30. Research on the volume stability performance of steel slag road base materials
31. Explanation about the development process, several unique characteristics and application examples on steel slag hydrated matrix (SSHM)
32. An assessment on volume stabilization of mortar with stainless steel slag sand10.1016/j.conbuildmat.2017.08.069 ↗
33. Properties and volume stability of steel slag sand
34. A study of characteristics and stability of steel slag sand
35. Effects of temperature on autoclave pulverization performance of steel slag
36. Research on the autoclave powder property of steel slag with different basicity at high temperature
37. Discussion about effect of substitution of mixture of waste foundry sand and electric arc furnace slag for asphalt concrete aggregate
38. W.L. Huang, Expansive behavior and stabilized methods of slag used in cement based matrix, Department of Civil Engineering, Chung Yuan Christian University, a master’s thesis, 2013.
39. B.L. Liu, Expansion stabilization methods and examination technique of slag used as fine aggregate of concrete, Department of Civil Engineering, National Central University, a master’s thesis, 2013.