Iron Metallurgy Slags as a Potential Source of Critical Elements - Nb, Ta and REE

Kasina, Monika; Michalík, Marek

doi:10.1515/mipo-2017-0004

Cited by 11 publications

(7 citation statements)

References 26 publications

(33 reference statements)

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“…Critical raw materials, such as REEs, are present in slags in significant quantities. [ 36 ] Moreover, the steel industry generates large quantities of steel slag as waste and landfills, representing a severe environmental problem. [ 37 ] To further demonstrate the feasibility of this technology to treat real world samples, we performed the recovery of REEs by RELP from steel slag samples.…”

Section: Resultsmentioning

confidence: 99%

Repeated Recovery of Rare Earth Elements Using a Highly Selective and Thermo‐Responsive Genetically Encoded Polypeptide

Hussain

Kim

Cho

et al. 2021

Adv Funct Materials

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Rare earth elements (REEs) have become increasingly important materials owing to their use in the high-tech and clean-energy industries. However, the unpredictable supply, possible health risks, and environmentally unsustainable extraction practices associated with REEs have encouraged the development of green technologies for the selective extraction and recovery of metals. This study presents a simple and innovative approach for the selective extraction and recovery of total REEs. Elastin-like polypeptide (ELP) and the REE-binding domain (lanmodulin) are fused to form REEs-sensitive and thermo-responsive genetically encoded ELP called RELP, where ELP offered a reversible, inverse phase transition for repeated uses. The RELP are purified and used for the selective extraction of total REEs from competing non-REEs metals by controlling the solution temperature (4 and 37 °C) and pH. RELP exhibit high REE specificity, even in the presence of non-REE metal ions. The bound REEs are readily recovered during at least six repeated cycles, and the efficiency is maintained. Moreover, REEs are selectively recovered by RELP from steel slag leachate, a potential industrial source of REEs. RELP offers a rapid, selective, and scalable method for REE extraction and recovery. This technology can be adapted to recover other precious metals and commodities.

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Section: Resultsmentioning

confidence: 99%

Repeated Recovery of Rare Earth Elements Using a Highly Selective and Thermo‐Responsive Genetically Encoded Polypeptide

Hussain

Kim

Cho

et al. 2021

Adv Funct Materials

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“…The physico-mechanical properties of the cement composites containing the IOC, also at the high temperature, are significantly connected with the chemical composition of the concentrate. The chemical composition of the IOC is, in turn, closely related to the method of the iron ore enrichment [ 67 , 68 ]. The high content of SiO 2 and Al 2 O 3 in the IOC makes possible to use the waste IOC as an admixture to the cement.…”

Section: Test Results and Discussionmentioning

confidence: 99%

Effects of Elevated Temperatures on the Properties of Cement Mortars with the Iron Oxides Concentrate

et al. 2020

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Using the waste materials in the production of the building materials limits the storage of the wastes, burdensome for the environment and landscape, and makes possible to manufacture the materials and products with the use of the less volume of the raw materials. Cement concretes and mortars as the basic building materials offer the broad prospects of utilization of the recyclable or waste materials. The wastes from the iron ore processing are the solid wastes resulting from the process of enrichment of the ore concentrate. The paper presents the results of testing three mortars, in which a part of fine aggregate was replaced with the iron oxide concentrate (IOC) resulting from such a process. IOC has been used as a substitute of 10%, 20% and 30% (by mass) of the fine aggregate. The effect of the concentrate on the mechanical performance of the mortars at the high temperature (up to 600 °C) was also investigated. The IOC is a neutral material, not affecting chemically the process of cement hydration. The addition of IOC slightly improves the strength of the cement mortars (by 5% to 10%). In the case of the larger amount (20–30%) of the addition, the use of superplasticizer is necessary. The IOC significantly improves the high temperature resistance of the cement mortars (300 °C). The cement mortars containing 30% of the IOC addition keep 80% of the initial flexural and compressive strength when exposed to the temperature 450 °C.

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“…al has reported globally that 4 billion tons of red mud which contains 0.5–1.7 kg/ton of REMs have been stockpiled by 2020 (Swain et al 2020b ), and the same red mud being generated, annually between 120–150 million tons worldwide mainly goes for stockpiling. Kasina and Michalik have reported each ton of BFS could contain 0.12–14 kg/ton of REMs (Kasina and Michalik 2016 ). To put in perspective, quantitative estimation of REM gets slagged with BFS can be calculated from worldwide iron and steel production data.…”

Section: Introductionmentioning

confidence: 99%

Challenges and opportunities for sustainable valorization of rare earth metals from anthropogenic waste

Swain

2023

Rev Environ Sci Biotechnol

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Iron Metallurgy Slags as a Potential Source of Critical Elements - Nb, Ta and REE

Cited by 11 publications

References 26 publications

Repeated Recovery of Rare Earth Elements Using a Highly Selective and Thermo‐Responsive Genetically Encoded Polypeptide

Repeated Recovery of Rare Earth Elements Using a Highly Selective and Thermo‐Responsive Genetically Encoded Polypeptide

Effects of Elevated Temperatures on the Properties of Cement Mortars with the Iron Oxides Concentrate

Challenges and opportunities for sustainable valorization of rare earth metals from anthropogenic waste

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