Effect of B2O3 on the properties of ferronickel melt and mineral wool

Wang, Wanlin; Dai, Shifan; Zhou, Lejun; Zhang, Tongsheng; Tian, Weiguang; Xu, Jialin

doi:10.1016/j.ceramint.2020.02.129

Cited by 18 publications

(5 citation statements)

References 28 publications

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“…When mineral fibers are produced, the fiber-forming temperature (T ff ) is up to 1450–1550 °C due to the low viscosity requirement [ 18 ]. The melting–homogenization temperature (T mh ) is very near the melting point; the hold time is 15–60 min [ 19 , 20 ]. In contrast, the fiber-forming viscosity (V ff ) of continuous fibers is higher, and the T ff is in the range 1200–1410 °C.…”

Section: The Production Process Of Inorganic Fibers From Solid Wastesmentioning

confidence: 99%

Study Progress on Inorganic Fibers from Industry Solid Wastes and the Key Factors Determining Their Characteristics

Zhang

Cheng

et al. 2022

Materials

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Compared to basalt and glass fibers, the production of inorganic fiber from industry solid wastes is an effective method to not only save natural resources but also recycle waste resources. Because the preparation of the fibers requires high temperature treatment, the production process is associated with high energy consumption and high carbon emissions. How to resolve these problems is a current research challenge in this field. Herein, we reviewed the study progress on these fibers and further discussed the key factors determining their characteristics, including chemical composition, melt structure, and viscosity of melt. In production, the matching of solid waste blends containing enough total content of SiO2 and Al2O3, and a suitable amount of MgO and CaO, is beneficial to the structure control of the melt. The study found that the melt consisted of Q2 and Q3; and that Q3 content more than Q2 was more suitable for fiber production and its performance improvement. Such a melt structure can be achieved by controlling the degree of depolymerization and the temperature. New ultrasonic technology can shorten the homogenization time; its application is hoped to save energy and reduce carbon emissions. These conclusions will offer important guidance for the development of inorganic fibers from industry solid wastes in the future.

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Section: The Production Process Of Inorganic Fibers From Solid Wastesmentioning

confidence: 99%

Study Progress on Inorganic Fibers from Industry Solid Wastes and the Key Factors Determining Their Characteristics

Zhang

Cheng

et al. 2022

Materials

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“…In addition, the reason to chose B 2 O 3 is because it is a high-efficiency flux agent, which can decrease the viscosity and lower the melting temperature of mold flux and other slags. 13,[20][21][22][23][24][25] The interfacial studies in this paper focused on the spreading and wetting behaviors of the molten mold fluxes on the TiN substrates at the temperature of 1 723 K (1 500°C). Then the detailed interfacial reactions and phase transformations during the tests have also been investigated.…”

Section: Optimization Of the Interfacial Properties Between Mold Flux And Tin Substrate Through The Regulation Of B 2 O 3 Of Product Greamentioning

confidence: 99%

Optimization of the Interfacial Properties between Mold Flux and TiN Substrate Through the Regulation of B<sub>2</sub>O<sub>3</sub>

et al. 2020

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Titanium nitride (TiN) inclusions are easy to precipitate in the high temperature processing of titanium alloying steels, which tends to introduce numerous surface defects on the final continuous casting slabs. This study utilizes B 2 O 3 to regulate the interfacial properties between the designed mold fluxes and TiN, with the aim to resolve above problems. The results show that the spreading behavior of the mold flux on the TiN substrate is enhanced, and the interfacial contact angle starts to drop at a lower temperature (from 1 473 K for Sample 1 to 1 343 K for Sample 4) with the addition of 0-9 wt.% B 2 O 3 , as the melting behavior of the designed mold fluxes has been improved. The interfacial reactions between the TiN substrate and molten fluxes are also promoted with the addition of B 2 O 3 , where more bubbles are observed in the tested mold fluxes samples. For Sample 1 without B 2 O 3 , quite a few TiN particles couldn't be dissolved and remains in the matrix phase, where the major formed phase is perovskite (CaTiO 3 ) that would deteriorate the high temperature properties of mold flux severely. However, most TiN particles have been dissolved in the optimized mold fluxes, as major of them have reacted with mold fluxes, resulted in the more generation of titanium oxides phase in the samples. In addition, the calculated phase diagram of CaO-SiO 2 -TiO 2 slag system under different B 2 O 3 contents indicates that the formation and precipitation of CaTiO 3 can be effectively inhibited by the addition of B 2 O 3 .

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“…Fe) compared to float and container glasses; and, secondly, industrial waste materials, including ash materials, are already used in the manufacture of mineral wool, e.g. slag material from steel and other metal production, coal fly ash, [33][34][35][36] thereby establishing precedence and evidencing the experience within this industry of handling such raw materials.…”

Section: Introductionmentioning

confidence: 99%

Biomass ashes as potential raw materials for mineral wool manufacture: initial studies of glass structure and chemistry

Backhouse¹,

Guilbot²,

Scrimshire³

et al. 2022

Glass Tech.: Eur, J. Glass Sci. Technol. B

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The energy intensive and CO2-generating nature of commercial mineral wool and glass production necessitates advances and changes in materials and processes. The derivation of raw materials from waste products arising from biomass energy generation offers the possibility of a two-fold environmental benefit: partial replacement of carbonate raw minerals in production, leading to lower CO2 release during melting; and the utilisation and valorisation of byproducts which may otherwise be sent to landfill. Glass samples with a basaltic mineral wool composition were produced with additions to the raw materials of 0, 1, 5 and 10 wt% of a fly ash and a bottom ash arising from biomass combustion. The resulting glasses were analysed by x-ray fluorescence, x-ray diffraction, dilatometry, 57Fe Mössbauer and Raman spectroscopies, and their densities, molar volumes and viscosity–temperature profiles were calculated and compared against benchmark glass samples. All biomass ash-containing glasses were closely similar in both composition and properties to the benchmark glass, with up to 10 wt% ash additions to the raw materials. In addition, the use of the biomass fly ash led to a reduction in batch CO2 content estimated to be 1·5 kg CO2 per tonne of batch for each 1 wt% addition. These initial results provide evidence supporting the further development of these ash materials as potential value-added raw materials for mineral wool manufacture.

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Effect of B2O3 on the properties of ferronickel melt and mineral wool

Cited by 18 publications

References 28 publications

Study Progress on Inorganic Fibers from Industry Solid Wastes and the Key Factors Determining Their Characteristics

Study Progress on Inorganic Fibers from Industry Solid Wastes and the Key Factors Determining Their Characteristics

Optimization of the Interfacial Properties between Mold Flux and TiN Substrate Through the Regulation of B<sub>2</sub>O<sub>3</sub>

Biomass ashes as potential raw materials for mineral wool manufacture: initial studies of glass structure and chemistry

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