Influence of the Chemical Composition of Bauxite on Mineral Formation and Properties of Sulfoaluminate-Ferrite Cement

Abstract:

The influence of the chemical composition of bauxite on the mineral formation and structure of sulfoaluminate-ferrite clinker (SAFC), and physical and mechanical properties of cement based on it is studied. Ferrous bauxite, marble crushing screenings and neutralized fluorine-anhydrite were used for the synthesis of SAFC. The compositions of raw mixes of low-and high-alkaline SAFC are calculated with modular characteristics: M_f (ferritic modulus) = 0.35 and 0.7, М_s (sulfate modulus) = 0.167 and 0.5, respectively. Clinker synthesis from a raw mix containing ferrous bauxite with a quality coefficient of 1.7 must be carried out at a temperature of 1250 °C, which is reduced to 1200 °C for burning a raw mix based on bauxite with a quality coefficient of 2.2. Intensive decomposition of anhydrite occurs with the release of sulfur dioxide into the atmosphere at a temperature of 1300 °C, so it is not recommended to burn SAFC at this temperature. The mineral composition of the obtained SAFC is represented by sulfoaluminate, calcium sulfoferrite and free anhydrite. There is no C₂S as a separate phase in clinkers, since in the process of their synthesis belite dissolves in 3С(A,F)·СŜ, mainly in the aluminoferrite phase. The use of bauxite with a quality coefficient of 2.2 in the SAFC raw mix increases the cement activity up to 54.2 MPa. Increasing its specific surface from 350 to 460 m²/kg significantly reduces the setting time of cement paste and increases the strength of sulfoaluminate-ferrite cement both in the early (up to 43.4 MPa) and late hardening periods (up to 67.3 MPa).

• Periodical: Solid State Phenomena (Volume 325)
• Pages: 53-58
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.325.53
• Online since: October 2021
• Authors: Aleksandr A. Ponomarenko*, Fedor L. Kapustin, Elena Makarova, Ekaterina S. Gerasimova
• Keywords: Ferrous Bauxite, Fluorine-Anhydrite, Marble Crushing Screenings, Sulfoaluminate-Ferrite Clinker

References

[1] Yongbo Huang, Yan Pei, Bauxite free iron rich calcium sulfoaluminate cement: Preparation, hydration and properties, Construction and Building Materials. 249 (2020) 118774.

DOI: 10.1016/j.conbuildmat.2020.118774

[2] Changzai Ren, WenlongWang, Guolin Li, Preparation of high-performance cementitious materials from industrial solid waste, Construction and Building Materials. 152 (2017) 39-47.

DOI: 10.1016/j.conbuildmat.2017.06.124

[3] Changzai Ren, Wenlong Wang, Yanpeng Mao, Xueliang Yuan, Zhanlong Song, Jing Sun, Xiqiang Zhao, Comparative life cycle assessment of sulfoaluminate clinker production derived from industrial solid wastes and conventional raw materials, J. of Cleaner Production. 167 (2017) 167.1314-1324.

DOI: 10.1016/j.jclepro.2017.05.184

[4] A. Rungchet, C.S. Poon, Synthesis of low-temperature calcium sulfoaluminate-belite cements from industrial wastes and their hydration: Comparative studies between lignite fly ash and bottom ash, Cem. Concr. Compos. 83 (2017) 10-19.

DOI: 10.1016/j.cemconcomp.2017.06.013

[5] V. Isteri, K. Ohenoja. Production and properties of ferrite-rich CSAB cement from metallurgical industry residuesб Science of The Total Environment. 712 (2020) 136208.

DOI: 10.1016/j.scitotenv.2019.136208

[6] E.A. El-Alfi, R.A. Gado, Preparation of calcium sulfoaluminate-belite cement from marble sludge waste, Construction and Building Materials. 113 (2016) 764-772.

DOI: 10.1016/j.conbuildmat.2016.03.103

[7] Shuang Wu, Xingliang Yao, Recycling phosphogypsum as a sole calcium oxide source in calcium sulfoaluminate cement and its environmental effects, J. of Environmental Management. 271 (2020) 110986.

DOI: 10.1016/j.jenvman.2020.110986

[8] Yongbo Huang, Jueshi Qian, Phosphogypsum as a component of calcium sulfoaluminate cement: Hazardous elements immobilization, radioactivity and performances, J. of Cleaner Production 248 (2020) 119287.

DOI: 10.1016/j.jclepro.2019.119287

[9] Oğulcan Canbek, Sahra Shakouri, Sinan T. Erdoğan, Laboratory production of calcium sulfoaluminate cements with high industrial waste content, Cem. Concr. Compos. 16 (2020).

DOI: 10.1016/j.cemconcomp.2019.103475

[10] Yifan Gao, Zhaofeng Li, Synergistic use of industrial solid wastes to prepare belite-rich sulphoaluminate cement and its feasibility use in repairing materials, Construction and Building Materials. 264 (2020) 120201.

DOI: 10.1016/j.conbuildmat.2020.120201

[11] I.N. Borisov, O.S. Mandrikova, D.A. Mishin, I.A. Morozova, S.V. Kovalev, Features of formation of the phase composition and structure sulfoferrite clinker based onsulfate containing secondary raw, Advances in Environmental Biology. 8 (13) (2014) 139-144.

[12] I.N. Borisov, A.A. Grebeniuk, V.I. Dyukareva, Combined cements with non-shrinking properties using sulfoferrite clinker, IOP Conference Series: Materials Science and Engineering. 451(1) (2018) 012011.

DOI: 10.1088/1757-899x/451/1/012011

[13] Xingliang Yao, Shizhao Yang, Yongbo Huang, Effect of CaSO4 batching in raw material on the iron-bearing mineral transition of ferric-rich sulfoaluminate cement, Construction and Building Materials. 250 (2020) 118783.

DOI: 10.1016/j.conbuildmat.2020.118783

[14] Xingliang Yao, Shizhao Yang, Effect of CaO content in raw material on the mineral composition of ferric-rich sulfoaluminate clinker, Construction and Building Materials. 263 (2020) 120431.

DOI: 10.1016/j.conbuildmat.2020.120431