Utilization of Copper Flotation Tailings in Geopolymer Materials Based on Zeolite and Fly Ash DOI Open Access
Marija Štulović, Dragana Radovanović, Jelena Dikić

et al.

Materials, Journal Year: 2024, Volume and Issue: 17(24), P. 6115 - 6115

Published: Dec. 14, 2024

Copper flotation tailings (FTs), resulting from the separation and beneficiation processes of ores, are a significant source environmental pollution (acid mine drainage, toxic elements leaching, dust generation). The most common disposal method for this industrial waste is dumping. However, due to their favorable physical chemical properties—the high content aluminosilicate minerals (60–90%)—flotation can be effectively treated reused through geopolymerization technology, thereby adding value waste. objective study was evaluate potential utilizing FTs produce sustainable materials. Geopolymers based on natural zeolite (NZ), sodium-modified (NaZ), fly ash (FA) were prepared using 20%, 35%, 50% FTs, activated with 10 M NaOH solution. investigated influence Ca/Si, Si/Al, Na/Al molar ratios structural, thermal, mechanical properties (XRD, TG/DTG unconfined compressive strength, UCS), contaminant immobilization (TCLP method) geopolymers. Geochemical modeling via PHREEQC program employed interpret results. findings indicated that UCS decreased in zeolite-based geopolymers as FT increased inertness low calcium system (Ca/Si ≤ 0.3), contrast FA-based geopolymer. highest 44.3 MPa recorded an geopolymer containing tailings, optimal 0.4 3.0 1.1 Na/Al. In conclusion, process has been determined suitable technological approach treatment reuse FTs.

Language: Английский

Enhancement of phosphogypsum’s water stability in early hydration phase as embankment fill with lime-ground granulated blast-furnace slag DOI

Pangkun Zheng,

Hang Shu, Qiang Ma

et al.

Construction and Building Materials, Journal Year: 2024, Volume and Issue: 458, P. 139708 - 139708

Published: Dec. 27, 2024

Language: Английский

Citations

1
Geomechanical Performance of Gold Ore Tailings-Synthetic Fiber Composites DOI
Juan Manuel Girao Sotomayor, Giovanna Monique Alelvan, Michéle Dal Toé Casagrande

et al.

Geotechnical and Geological Engineering, Journal Year: 2024, Volume and Issue: 42(6), P. 4805 - 4822

Published: May 20, 2024

Language: Английский

Citations

0
Evaluation of Alkali Activated Furnace Slag-Tannery Sludge Powder (Aaft) after Thermal Exposure: Investigation on Properties, Phase Transformation and Cr Leaching Behavior DOI
Shoukai Chen,

Jingfei Zhou,

Yajing Bie

et al.

Published: Jan. 1, 2024

Language: Английский

Citations

0
Structural properties and mechanical responses of geopolymer pore models under chloride exposure: Molecular dynamics simulation DOI
Tongfang Wang, Biao Jiang, Tong Guo

et al.

Journal of Building Engineering, Journal Year: 2024, Volume and Issue: 97, P. 110651 - 110651

Published: Sept. 4, 2024

Language: Английский

Citations

0
Utilization of Copper Flotation Tailings in Geopolymer Materials Based on Zeolite and Fly Ash DOI Open Access
Marija Štulović, Dragana Radovanović, Jelena Dikić

et al.

Materials, Journal Year: 2024, Volume and Issue: 17(24), P. 6115 - 6115

Published: Dec. 14, 2024

Copper flotation tailings (FTs), resulting from the separation and beneficiation processes of ores, are a significant source environmental pollution (acid mine drainage, toxic elements leaching, dust generation). The most common disposal method for this industrial waste is dumping. However, due to their favorable physical chemical properties—the high content aluminosilicate minerals (60–90%)—flotation can be effectively treated reused through geopolymerization technology, thereby adding value waste. objective study was evaluate potential utilizing FTs produce sustainable materials. Geopolymers based on natural zeolite (NZ), sodium-modified (NaZ), fly ash (FA) were prepared using 20%, 35%, 50% FTs, activated with 10 M NaOH solution. investigated influence Ca/Si, Si/Al, Na/Al molar ratios structural, thermal, mechanical properties (XRD, TG/DTG unconfined compressive strength, UCS), contaminant immobilization (TCLP method) geopolymers. Geochemical modeling via PHREEQC program employed interpret results. findings indicated that UCS decreased in zeolite-based geopolymers as FT increased inertness low calcium system (Ca/Si ≤ 0.3), contrast FA-based geopolymer. highest 44.3 MPa recorded an geopolymer containing tailings, optimal 0.4 3.0 1.1 Na/Al. In conclusion, process has been determined suitable technological approach treatment reuse FTs.

Language: Английский

Citations

0