Adjusting the melting and crystallization behaviors of ferronickel slag via partially replacing of SiO2 by B2O3 for mineral wool production

Wang, Wanlin; Chen, Junyu; Yu, Jie; Zhou, Lejun; Dai, Shifan; Tian, Weiguang

doi:10.1016/j.wasman.2020.05.015

Cited by 29 publications

(6 citation statements)

References 25 publications

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“…Compared to E-glass or basalt fibers, the combined content of silica and alumina in the fibers prepared for this study was lower for approximately 10 to 20 wt% [ 21 , 23 ]. In slag fibers, large amounts of calcium oxide (CaO), magnesium oxide (MgO) and iron oxide (Fe 2 O 3 ) are typical [ 6 , 24 ], and were measured in the range between 32 and 37 wt%. CaO, MgO and other components are known as network modifiers that break the SiO 2 and Al 2 O 3 network structure [ 25 ].…”

Section: Resultsmentioning

confidence: 99%

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Physical Properties of Mineral Fibers Depending on the Mineralogical Composition

et al. 2021

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A developed methodology for determining the physical properties of mineral fibers prepared from different input mixtures under the same spinning wheel conditions is described and discussed. Energy dispersive X-ray fluorescence spectroscopy was combined with simultaneous thermal analysis and thermogravimetry to study the mineralogical composition and typical melting and crystallization temperatures. The mechanical properties measured with nanoindentation were related to the mineralogical properties and the results obtained are in agreement with the literature. The developed methodology shows reliable performance and demonstrates the ability to study the mechanical properties of mineral fibers, their mineralogical composition, and thermal properties. The presented experimental methodology opens up the possibility of researching the mechanical properties of mineral fibers for the purpose of defining production recipes in the field of mineral thermal insulation materials.

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Section: Resultsmentioning

confidence: 99%

“…and on the melt properties (temperature, chemical composition, point of impact on the wheel, etc.) [ 1 , 3 , 4 , 5 , 6 , 7 , 8 ]. The fiber properties are usually determined in standardized tests carried out in the laboratories of mineral wool production plants.…”

Section: Introductionmentioning

confidence: 99%

Physical Properties of Mineral Fibers Depending on the Mineralogical Composition

et al. 2021

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“…However, Fe 2+ spinels are stable and slowly dissolved in the melt (<~2135°C), and the iron oxide content leads to an increase in activation energy for spinel formation, increasing the viscosity of the system. In addition, molecular dynamics (MD) simulation provides a method for exploring the dynamic processes of particles in high‐temperature molten slag 27–29 . Diao et al 30 used BMH to calculate the effect of FeO on CaO‐SiO 2 ‐P 2 O 5 slag and established a linear expression that positively correlates the degree of polymerization parameter Q Si + P with viscosity.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, molecular dynamics (MD) simulation provides a method for exploring the dynamic processes of particles in hightemperature molten slag. [27][28][29] Diao et al 30 used BMH to calculate the effect of FeO on CaO-SiO 2 -P 2 O 5 slag and established a linear expression that positively correlates the degree of polymerization parameter Q Si + P with viscosity. Wu et al and Ma et al 31,32 calculated the SiO 2 -CaO-Al 2 O 3 -Fe 2 O 3 system and found that Fe 3+ ions have a greater effect on BO than Fe2+ ions, and Fe3+ ions are more likely to increase the total diffusion coefficient and decrease the viscosity of the slag.…”

Section: Introductionmentioning

confidence: 99%

Influence of Fe₂O₃‐FeS on the structure of iron‐containing clusters in aluminosilicate melts

Jiao

Mao

Zhang

et al. 2023

Asia-Pacific J Chem Eng

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Iron compounds addition on the melt is a more complex issue. Uncertainties in industrial applications are caused by crystallization and depolymerization phenomena. Most of the current studies have discussed FeO and Fe2O3, ignoring the influence of FeS in the glass structure. This study designed and simulated artificial ash close to coal ash to interact with the glass melt at high temperatures. Coulomb titration, X‐ray diffraction (XRD), and Raman analyses were carried out to determine the percentage and composition of crystalline and noncrystalline materials in the glass. Samples of FeS‐Fe2O3 were subjected to the enumeration of the glass structure and quantitative calculations of the degree of polymerization. The results showed that 15‐wt% Fe2O3 promoted crystallization in the system and accelerates the depolymerization of FeS. The introduction of FeS increases the amorphous materials, and the obtained amorphous materials are Si dominated network structures and [SiO4]‐[FeO4]‐[SiO4] clusters. The network tends to change from [FeOn] and [AlO4] to [SiO4]. In addition, aluminosilicate may enter FeS particles and unreacted FeS may deposit on the aluminosilicate surface.

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“…Currently, many investigations have been carried out on the disposal and utilization of EFS in the field of materials preparation, such as geopolymer [ 5 , 6 , 7 ], acid-base cement [ 8 , 9 ], concrete aggregate [ 10 , 11 ], cement clinker [ 8 , 12 ], insulation blocks [ 13 ], acoustic materials [ 14 ], inorganic mineral fibers [ 15 , 16 ], fertilizers [ 17 ] and metal recovery [ 18 , 19 ]. Particularly, the utilization of EFS for preparing magnesium cement is one of the most practicable approaches in view of its high-magnesium characteristics.…”

Section: Introductionmentioning

confidence: 99%

Influence of Phosphorus Sources on the Compressive Strength and Microstructure of Ferronickel Slag-Based Magnesium Phosphate Cement

et al. 2022

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Electric furnace ferronickel slag (EFS) is a typical magnesium-rich industrial by-product discharged from the manufacture of nickel and iron-nickel alloys. The approach to use it as the raw material for the preparation of magnesium phosphate cement (MPC) has potential and proves effective. In this study, three different phosphorus sources (PS) including phosphoric acid (H3PO4, PA), sodium dihydrogen phosphate (NaH2PO4, SDP) and potassium dihydrogen phosphate (KH2PO4, PDP) were used to react with EFS to prepare the EFS-based MPC (EMPC), and the effects of raw material mass ratio (EFS/PA, EFS/SDP, EFS/PDP) on the compressive strength, early hydration temperature and microstructure of EMPC pastes were investigated. Results showed that the compressive strength of EMPC paste is significantly impacted by the type of phosphorus source and the raw materials mass ratio. When the EFS/PDP ratio is 4.0, the compressive strength of the MPC paste reaches up to 18.8, 22.8 and 27.5 MPa at 3, 7 and 28 d, respectively. Cattiite (Mg3(PO4)2·22H2O), K-struvite (KMgPO4·6H2O) and/or Na-struvite (NaMgPO4·6H2O) were identified as the main hydration products of EMPC. The development of EMPC mainly involves the dissolution of a phosphorus source, MgO and Mg2SiO4, formation of hydration product as binder, and combination of the unreacted raw materials together by binders to build a compact form.

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Adjusting the melting and crystallization behaviors of ferronickel slag via partially replacing of SiO2 by B2O3 for mineral wool production

Cited by 29 publications

References 25 publications

Physical Properties of Mineral Fibers Depending on the Mineralogical Composition

Physical Properties of Mineral Fibers Depending on the Mineralogical Composition

Influence of Fe₂O₃‐FeS on the structure of iron‐containing clusters in aluminosilicate melts

Influence of Phosphorus Sources on the Compressive Strength and Microstructure of Ferronickel Slag-Based Magnesium Phosphate Cement

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Adjusting the melting and crystallization behaviors of ferronickel slag via partially replacing of SiO2 by B2O3 for mineral wool production

Cited by 29 publications

References 25 publications

Physical Properties of Mineral Fibers Depending on the Mineralogical Composition

Physical Properties of Mineral Fibers Depending on the Mineralogical Composition

Influence of Fe2O3‐FeS on the structure of iron‐containing clusters in aluminosilicate melts

Influence of Phosphorus Sources on the Compressive Strength and Microstructure of Ferronickel Slag-Based Magnesium Phosphate Cement

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Influence of Fe₂O₃‐FeS on the structure of iron‐containing clusters in aluminosilicate melts