Hydration properties of basic oxygen furnace steel slag

Wang, Qiang; Yan, Peiyu

doi:10.1016/j.conbuildmat.2009.12.028

Cited by 317 publications

(114 citation statements)

References 11 publications

Supporting

Mentioning

108

Contrasting

Unclassified

Order By: Relevance

“…The carbonation of alkaline solid waste has been proved to be an effective way to capture CO 2 (Uibu et al, 2009b;Wang and Yan, 2010;Chang et al, 2011a;Nyambura et al, 2011). Table 4 compares carbonation efficiency for different types of alkaline wastes operated under various conditions.…”

Section: Performance Evaluationmentioning

confidence: 99%

“…Along with GHG emissions from the steel manufacturing industry, considerable amounts of alkaline solid residues such as fly-ash (FA) slag, ultra-fine (UF) slag, basic oxygen furnace (BOF) slag, and blended hydraulic slag cement (BHC) are generated, which are either used in various applications or ultimately landfilled. BOF slag is a residue from the basic oxygen converter in the steelmaking process (about 10% of the steel production) and has the potential of capturing 6 to 10% of BOF CO 2 emissions (considering about 519 kg CO 2 production per ton steel produced) (Costa, 2009;Wang and Yan, 2010;De Windt et al, 2011). While global theoretical CO 2 emissions reduction potential of steelmaking slag carbonation is only 170 Mt/year , the reduction could be quite significant for an individual steel industry.…”

Section: Alkaline Wastes As Adsorbentsmentioning

confidence: 99%

“…It was suggested that some characteristic time, often longer than the time constant for the overall process, is needed to achieve a new equilibrium (Salminen and Prausnitz, 2007). The carbonate precipitation using steelmaking slag as feedstock should be mainly calcite (CaCO 3 ) (Bonenfant et al, 2008;Eloneva et al, 2008a;Costa, 2009;Wang and Yan, 2010;Chang et al, 2011a, b). The crystal volume of calcium carbonate is approximately 11.7 percent more than that of calcium hydroxide (Ishida and Maekawa, 2000).…”

Section: Formulation Of Carbonate Precipitationmentioning

confidence: 99%

“…Therefore, CO 2 capture by carbonating the steelmaking slags could be an interesting option for reducing CO 2 emissions from the steel plant. In recent years, accelerated carbonation of steelmaking slags has been progressively tested to assess the CO 2 capture potential of this material (e.g., Huijgen et al, 2005c;Bonenfant et al, 2008;Teir, 2008;Eloneva et al, 2008a;Kodama et al, 2008;Costa, 2009;Wang and Yan, 2010;Chang et al, 2011a, b;De Windt et al, 2011). Fig.…”

Section: Alkaline Wastes As Adsorbentsmentioning

confidence: 99%

See 3 more Smart Citations

CO2 Capture by Accelerated Carbonation of Alkaline Wastes: A Review on Its Principles and Applications

Pan

Chang

Chiang

2012

Aerosol Air Qual. Res.

359

193

View full text Add to dashboard Cite

CO 2 capture, utilization, and storage (CCUS) is a promising technology wherein CO 2 is captured and stored in solid form for further utilization instead of being released into the atmosphere in high concentrations. Under this framework, a new process called accelerated carbonation has been widely researched and developed. In this process, alkaline materials are reacted with high-purity CO 2 in the presence of moisture to accelerate the reaction to a timescale of a few minutes or hours. The feedstock for accelerated carbonation includes natural silicate-minerals (e.g., wollastonite, serpentine, and olivine) and industrial residues (e.g., steelmaking slag, municipal solid waste incinerator (MSWI) ash, and air pollution control (APC) residues). This research article focuses on carbonation technologies that use industrial alkaline wastes, such as steelmaking slags and metalworking wastewater. The carbonation of alkaline solid waste has been shown to be an effective way to capture CO 2 and to eliminate the contents of Ca(OH) 2 in solid residues, thus improving the durability of concrete blended with the carbonated residues. However, the operating conditions must be further studied for both the economic viability of the technology and the optimal conditions for CO 2 reaction.

show abstract

Section: Performance Evaluationmentioning

confidence: 99%

Section: Alkaline Wastes As Adsorbentsmentioning

confidence: 99%

Section: Formulation Of Carbonate Precipitationmentioning

confidence: 99%

Section: Alkaline Wastes As Adsorbentsmentioning

confidence: 99%

See 2 more Smart Citations

CO2 Capture by Accelerated Carbonation of Alkaline Wastes: A Review on Its Principles and Applications

Pan

Chang

Chiang

2012

Aerosol Air Qual. Res.

359

193

View full text Add to dashboard Cite

show abstract

“…The existence of C3S, C2S, C4AF and C2F on iron slag makes this material similar to cement that makes this blend has the potential to be used as concrete. However, because of the iron slag low cooling its cement mineral activity is much lower than Portland cement [4,5]. Research conducted by Wang and Yan stated that steel slag hydration level is much lower than cement, although their hydration process are very similar to each other.…”

Section: Introductionmentioning

confidence: 99%

Green Concrete Made From Iron Slag Waste

Mulyatun

2017

J. Nat. Scien. & Math. Res.

View full text Add to dashboard Cite

Synthesis of green concrete has been carried out by using iron slag waste of PT Inti Jaya Steel Jrakah, Semarang. Geopolimer (green concrete) is an aluminosilicate inorganic polymer with chain Si-O-Al that can be synthesized from material rich in silica and alumina with sodium hydroxide as an activator. Iron slag chemical content analysis indicated that this material is a part of pozzolan material with each individual components weight as follow: SiO2: 4.55%, Al2O3: 2.54%, CaO: 11.43%, Fe2O3: 77.10%, MnO2: 1.43 and other minerals: 4.07%. The mole ratio of SiO2/Al2O3 of iron slag waste of PT Inti Jaya Steel Jrakah, Semarang is quite high at 3.05. Although the ratio is high, it is still can be synthesized using an activator solution of NaOH and increasing the drying time to 3 days and 24 hours of curing time at 60°C temperature to help the process of water molecule condensation in the geopolymerisation process. Characterized concrete (green concrete) that has been formed shows that the maximum compressive power can be achieved at composition ratio of Iron slag/ Na-silicate /NaOH /H2O of 55/10/4/8, with compressive power of 11.254 MPa. © 2015 JNSMR UIN Walisongo. All rights reserved.

show abstract

Hydration characteristics of recycling reduction slag and waste sludge by co‐sintered treatment produced as eco‐cement

Lin

Hung³

et al. 2017

Env Prog and Sustain Energy

View full text Add to dashboard Cite

Waste materials have traditionally been discarded in landfills and often dumped directly into ecosystems without adequate treatment. However, possible reuse and recycling alternatives should be investigated and implemented. Recent environmentally friendly approaches have been aimed at achieving sustainable development by conserving natural resources and minimizing the discarding of materials. The objective of the present study was to investigate the hydration characteristics of reduction slag, limestone sludge, stone sludge, and iron-oxide sludge for fabricating four types of eco-cement clinkers. The compound raw materials were burned for 2 h at 14008C to form eco-cement clinkers. The results showed that the major components of ordinary Portland cement (OPC), namely C 3 S, C 2 S, C 3 A, and C 4 AF, were present in the eco-cement clinkers. The compressive strength development of EcoA pastes (containing 78% limestone sludge, 19.51% stone sludge, and 2.49% iron-oxide sludge) was similar to that of the commercial OPC products. The compressive strength of the EcoD pastes (containing 71% limestone sludge, 19.51% stone sludge, 2.49% iron-oxide sludge, and 7% reduction slag) decreased as the amount of a-C 2 S increased. Mercury intrusion porosimetry indicated that the pore volume of the pastes gradually decreased with an increase in the curing time. Furthermore, the results of physical-mechanical tests showed that reduction slag, limestone sludge, stone sludge, and iron-oxide sludge can be used as raw materials in cement production at no cost to the producer, thereby reducing the production costs.

show abstract

Hydration properties of basic oxygen furnace steel slag

Cited by 317 publications

References 11 publications

CO2 Capture by Accelerated Carbonation of Alkaline Wastes: A Review on Its Principles and Applications

CO2 Capture by Accelerated Carbonation of Alkaline Wastes: A Review on Its Principles and Applications

Green Concrete Made From Iron Slag Waste

Hydration characteristics of recycling reduction slag and waste sludge by co‐sintered treatment produced as eco‐cement

Contact Info

Product

Resources

About