CO2 mineral sequestration by using blast furnace slag: From batch to continuous experiments

Ren, Shan; Aldahri, Tahani; Liu, Weizao; Liang, Bin

doi:10.1016/j.energy.2020.118975

Cited by 70 publications

(19 citation statements)

References 29 publications

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“…BFS is also of great concern for urgent problems such as storage shortages and serious environmental regulations. New and advanced waste slag recycling processes are thus required to promote sustainable iron and steel industry development, which is driven by the economic and environmental domains [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

A facile and cost-effective adsorbent derived from industrial iron-making slag for uranium removal

Ibrahim

El‐Sheshtawy

El‐Magied

et al. 2021

J Radioanal Nucl Chem

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The Al 2 O 3 -SiO 2 -BFS (AS-BFS) solid adsorbent was developed from blast furnace slag (BFS). The potentiality of the AS-BFS for uranium ion removal from an aqueous medium, via the batch method, was explored and disused in terms of dynamic and isothermal properties. The sorbent exhibited good reusability, a high capacity for uranium ions, and a good specific surface area. The results showed that the sorbent evacuated uranium at about 88.5 mg/g. The sorbent represents a promising waste-derived substitute for other sorbents for water treatment.

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Section: Introductionmentioning

confidence: 99%

A facile and cost-effective adsorbent derived from industrial iron-making slag for uranium removal

Ibrahim

El‐Sheshtawy

El‐Magied

et al. 2021

J Radioanal Nucl Chem

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“…Blast furnace slag is an important industrial solid waste produced in the blast furnace ironmaking process [1], which is primarily used to produce building materials with low added values, such as cement, concrete, and bricks [2]. The Ti-bearing blast furnace slag is a byproduct of vanadium-titanium-bearing magnetite smelting in blast furnace ironmaking and mainly composed of SiO 2 , CaO, MgO, TiO 2 , and Al 2 O 3 [3].…”

Section: Introductionmentioning

confidence: 99%

Effect of Cr₂O₃ on the crystallization, structure, and properties of Ti-bearing blast furnace slag-based glass ceramics

Jung

et al. 2021

Journal of Asian Ceramic Societies

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The effects of Cr 2 O 3 on the crystallization, structure, and properties of Ti-bearing blast furnace slag-based glass ceramics were investigated. The results show that the transition temperature and crystallization temperature decreased with introduction of Cr 2 O 3 as a while. Specifically, the crystallization temperature first decreased, then increased with the increase Cr 2 O 3 concentration from 0.2 wt% to 0.8 wt%, and finally decreased with further increased in Cr 2 O 3 concentration. The crystal phases were identified as anorthite, diopside, and akermanite. As the content of Cr 2 O 3 increased to 0.8 wt%, the dendrites gradually decreased and the granular crystals gradually increased. When the Cr 2 O 3 concentration further increased, the number of granular crystals gradually decreased and the dendrites gradually accumulated. With the increase of Cr 2 O 3 from 0.2 wt% to 0.8 wt%, the structure of the investigated glass gradually depolymerized, while the opposite trend was presented with further increased in Cr 2 O 3 content. With increasing Cr 2 O 3 content from 0.2 wt% to 2 wt%, the flexural strength values and Vickers hardness values of the glass ceramics first increased and then decreased, and the maximum values of flexural strength and Vickers hardness were obtained as 94.371MPa and 974.43MPa, respectively. The prepared Ti-bearing blast furnace slag-based glass ceramics showed good acid and alkali resistance.

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“…Nitrogen oxides (NO x ), present in industrial coal-fired flue gas, are among the major air pollutants causing some serious global environmental problems . In recent years, to meet China’s stringent regulation of ultralow emission on flue gas (i.e., NO x < 50 mg/m 3 ), selective catalytic reduction (SCR) of NO x over a V 2 O 5 –WO 3 /TiO 2 (denoted as VWTi) catalyst has proven to be an effective method, − and widely used for flue gas denitrogenation in coal-fired power plants, municipal solid waste incineration plants, iron ore sintering plants, and other industrial boilers. − However, due to the complex composition of industrial flue gas, high content of dust that contains alkaline (earth) metals, heavy metals, the VWTi catalyst can be poisoned and deactivated after 3–5 years of use. , …”

Section: Introductionmentioning

confidence: 99%

Recycling of Waste V₂O₅–WO₃/TiO₂ Catalysts in the Iron Ore Sintering Process Via a Preballing Approach

Qian

Yang

Long

et al. 2021

ACS Sustainable Chem. Eng.

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Extensive use of selective catalytic reduction denitrogenation technology leads to the generation of a large amount of hazardous waste vanadium–tungsten–titanium catalysts. To valorize these waste catalysts, a new technology for the recycling of waste catalysts in steelworks was proposed, in which waste catalysts were added to the iron ore sintering process for preparing titanium-bearing sinter for blast furnace hearth protection. The effects of adding the waste catalyst on sinter product quality indexes were investigated by sinter pot tests. The results confirmed that adding 0.5–2.0 wt % waste catalysts had no obvious negative impact on sinter product quality indexes, but caused a substantial decrease in reducibility of the finished sinter product due to the introduction of titanium oxide. Based on this result, a novel preballing approach was developed, in which the waste catalyst was preballed with magnetite, and the granulated pellets were then sintered with the sintering mixture. It was found that by preballing the waste catalyst at 1 wt % with magnetite improved the permeability and enhanced the sintering indexes, without changing the reducibility properties of the finished sinter product. Moreover, titanium oxide reacted within the pellet to form ilmenite that was wrapped within the pellet. This work thus provided a promising approach for waste catalyst utilization.

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CO2 mineral sequestration by using blast furnace slag: From batch to continuous experiments

Cited by 70 publications

References 29 publications

A facile and cost-effective adsorbent derived from industrial iron-making slag for uranium removal

A facile and cost-effective adsorbent derived from industrial iron-making slag for uranium removal

Effect of Cr₂O₃ on the crystallization, structure, and properties of Ti-bearing blast furnace slag-based glass ceramics

Recycling of Waste V₂O₅–WO₃/TiO₂ Catalysts in the Iron Ore Sintering Process Via a Preballing Approach

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CO2 mineral sequestration by using blast furnace slag: From batch to continuous experiments

Cited by 70 publications

References 29 publications

A facile and cost-effective adsorbent derived from industrial iron-making slag for uranium removal

A facile and cost-effective adsorbent derived from industrial iron-making slag for uranium removal

Effect of Cr2O3 on the crystallization, structure, and properties of Ti-bearing blast furnace slag-based glass ceramics

Recycling of Waste V2O5–WO3/TiO2 Catalysts in the Iron Ore Sintering Process Via a Preballing Approach

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Product

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Effect of Cr₂O₃ on the crystallization, structure, and properties of Ti-bearing blast furnace slag-based glass ceramics

Recycling of Waste V₂O₅–WO₃/TiO₂ Catalysts in the Iron Ore Sintering Process Via a Preballing Approach