Environmentally clean materials from hazardous red mud, ground cooled ferrous slag and lime production waste

Vsévolod Mymrin, Kirill Alekseev, Otavio M. Fortini, Yelaman K. Aibuldinov, Cleber L. Pedroso, André Nagalli, Edgar Winter, Rodrigo E. Catai, Eliane B.C. Costa

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

New composite materials were developed from red mud, a residue from bauxite mining, which can be used in several applications such as airfield runways, municipal waste dumps, and production of tiles among others. The composites contain 52 to 78 wt % of red mud with pH value near 13.5, ground cooled ferrous slag (20–45%), and lime production waste (2%). The main objectives of this research were to develop new environmentally efficient solutions for these three solid wastes as valuable components of reusable materials and to study their structure formation processes. Different wet mixes of these three wastes were compacted with a force of 10 MPa to cylindrical shapes of 20 × 20 mm, and hardened at 94–96% humidity. The materials had axial resistance strength 1.8, 3.4, 6.2 and 11.2 MPa on the 3rd, 7th, 14th, and 365th days respectively; coefficients of linear expansion ranged between 0.3 and 4.76%, and water absorption ranged from 1.8 to 9.31%. The hardening process was monitored by XRD, SEM, EDS, and LAMMA demonstrating that new mainly amorphous formations are responsible for the materials’ structure formation. Leaching and solubility tests show that the new materials meet environmental standards for the intended applications.

Original languageEnglish (US)
Pages (from-to)376-381
Number of pages6
JournalJournal of Cleaner Production
Volume161
DOIs
StatePublished - Sep 10 2017

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slag
Lime
Slags
lime
mud
Bauxite mines
bauxite
Composite materials
Solid wastes
Water absorption
Tile
hardening
solid waste
Leaching
Hardening
Energy dispersive spectroscopy
Atmospheric humidity
humidity
solubility
Solubility

Keywords

  • Bauxite mineral processing waste
  • Chemical interaction
  • Environment management
  • Hazardous red mud
  • Mechanical properties
  • Recycling

Cite this

Mymrin, V., Alekseev, K., Fortini, O. M., Aibuldinov, Y. K., Pedroso, C. L., Nagalli, A., ... Costa, E. B. C. (2017). Environmentally clean materials from hazardous red mud, ground cooled ferrous slag and lime production waste. Journal of Cleaner Production, 161, 376-381. https://doi.org/10.1016/j.jclepro.2017.05.109

Environmentally clean materials from hazardous red mud, ground cooled ferrous slag and lime production waste. / Mymrin, Vsévolod; Alekseev, Kirill; Fortini, Otavio M.; Aibuldinov, Yelaman K.; Pedroso, Cleber L.; Nagalli, André; Winter, Edgar; Catai, Rodrigo E.; Costa, Eliane B.C.

In: Journal of Cleaner Production, Vol. 161, 10.09.2017, p. 376-381.

Research output: Contribution to journalArticle

Mymrin, V, Alekseev, K, Fortini, OM, Aibuldinov, YK, Pedroso, CL, Nagalli, A, Winter, E, Catai, RE & Costa, EBC 2017, 'Environmentally clean materials from hazardous red mud, ground cooled ferrous slag and lime production waste' Journal of Cleaner Production, vol. 161, pp. 376-381. https://doi.org/10.1016/j.jclepro.2017.05.109
Mymrin, Vsévolod ; Alekseev, Kirill ; Fortini, Otavio M. ; Aibuldinov, Yelaman K. ; Pedroso, Cleber L. ; Nagalli, André ; Winter, Edgar ; Catai, Rodrigo E. ; Costa, Eliane B.C. / Environmentally clean materials from hazardous red mud, ground cooled ferrous slag and lime production waste. In: Journal of Cleaner Production. 2017 ; Vol. 161. pp. 376-381.
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