Effects of CaO and Fe&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt; on the Microstructure and Mechanical Properties of SiO&lt;sub&gt;2&lt;/sub&gt;–CaO–MgO–Fe&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt; Ceramics from Steel Slag

Zhao, Lihua; Li, Yu; Zhang, Lingling; Cang, Daqiang

doi:10.2355/isijinternational.isijint-2016-064

Cited by 27 publications

(5 citation statements)

References 27 publications

(27 reference statements)

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“…SEM-EDS microstructures of FS20, TS85, FS80 and TS25 sintered at optimal temperatures FS20 and TS85 were prepared by designing the compositions of raw materials in the crystallization regions of pyroxene phases. FS20 and TS85 had high bending strengths of more than 100 MPa, which were similar to those of the reference samples (107-143 MPa) [7]. Moreover, TS85 had a slightly higher bending strength (124.61 MPa) than that of FS20 (114.52 MPa) because of fewer and smaller pores in it than those in FS20 (Figure 7).…”

Section: Relationship Between Crystals Containing Cr/ Mn and Its Rete...mentioning

confidence: 55%

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Effect of Phase Composition on Leaching Behavior and Mechanical Properties of Ceramics from Ferrochrome Slag and Tundish Slag

et al. 2022

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Ferrochrome slag (FS) and tundish slag (TS) are two typical slags containing high contents of Cr2O3 (3.88 wt.%) and MnO (18.69 wt.%), respectively. In this study, batches of ceramics were prepared from FS and TS, and their Cr/Mn leaching behaviors, mechanical properties and microstructures were investigated. Results showed that ceramics with 80 wt.% FS or 85 wt.% TS had acceptable properties. By controlling its composition and sintering temperature, pyroxene or spinel phases could become the main crystalline phases of the fired ceramics containing either of the two slags. For both slag series, pyroxene phases contributed to higher bending strengths, whereas spinel phases led to lower Cr/Mn leaching rates. Both ceramic containing 20 wt.% FS and ceramic containing 85 wt.% TS had the main crystals of pyroxene phases and possessed the highest bending strengths (FS20: 114.52 MPa and TS85: 124.61 MPa). However, both ceramic containing 80 wt.% FS and ceramic containing 25 wt.% TS with main crystals from the spinel phases had the lowest Cr/Mn leaching rates (FS80: Cr 0.05% and TS25: Mn 0.43%). Therefore, optimum designs for the compositions of ceramics from different slags were achieved by changing the proportions of pyroxene and spinel phases to obtain a balance between the high strengths of materials and the stable retention of heavy metal ions. This study provides an important basis for long-term research on the large-scale reuse of heavy metal-containing slags in the ceramic industry.

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Section: Relationship Between Crystals Containing Cr/ Mn and Its Rete...mentioning

confidence: 55%

“…Recently, Zhao and Jiang et al [7][8][9][10] synthesized ceramics with high contents of CaO and Fe 2 O 3 from solid waste, including steel slag, tailings and red mud. The main crystals of these ceramics were pyroxene group minerals instead of quartz or mullite.…”

Section: Introductionmentioning

confidence: 99%

Effect of Phase Composition on Leaching Behavior and Mechanical Properties of Ceramics from Ferrochrome Slag and Tundish Slag

et al. 2022

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“…Furthermore, following the disappearance of diopside, a slight increase can be noted in the relative content of the magnetite phase within these ceramic samples. This phenomenon may be attributed to vacancies present within the diopside's lattice structure that are capable of accommodating metal ions [33]. Consequently, iron ions dissolve into diopside-forming magnetite crystals; however, without any remaining diopside crystals within these samples, iron ions that would have otherwise solid-dissolved exist instead as magnetite crystals, leading to an increased relative content.…”

Section: Xrd Analysismentioning

confidence: 99%

Influence of Solid Waste Material Content on the Properties of Steel Slag-Waste Clay Brick Ceramic Bricks

Ji,

Li,

Zhu

et al. 2024

Coatings

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Steel slag and waste clay brick are two common solid wastes in industrial production, and their complex chemical compositions pose challenges to the production of traditional alumina silicate ceramics. To investigate the influence of steel slag and waste clay brick on the performance of CaO–SiO2–MgO ceramic materials, this study examined their effects on the mechanical properties, crystal composition, and microstructure of the ceramics through single-factor experiments. The results demonstrate that when keeping the dosage of waste clay brick and talcum powder constant, a 43% dosage of steel slag yields optimal performance for the ceramic materials with a modulus of rupture of 73.01 MPa and a water absorption rate as low as 0.037%. Similarly, when maintaining a constant dosage of steel slag and talcum powder, a 41% dosage of waste clay brick leads to superior performance of the ceramic materials, with a modulus of rupture reaching 82.17 MPa and a water absorption rate only at 0.071%. Furthermore, when keeping the dosage of steel slag and waste clay brick constant, employing a talcum powder dosage of 24% results in excellent performance for the ceramic materials with a modulus of rupture measuring 73.01 MPa while maintaining an extremely low water absorption rate at only 0.037%. It is noteworthy that steel slag contributes to akermanite phase formation while talcum powder and waste clay brick contribute to diopside phase formation.

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“…Thermal and kinetic studies on the spatial structure of minerals are also of great interest to the scientific community. Under high-pressure (i.e., high-temperature) conditions, corresponding patterns of change and intrinsic relationships in the chemical composition, internal structure, and physicochemical properties of minerals can be observed [13][14][15]. The study of high-pressure new minerals and the mechanism of mineral phase transition are of great significance to the development and utilization of mineral resources.…”

Section: Introductionmentioning

confidence: 99%

Editorial for the Special Issue: “Spatial Structure of Minerals”

Wu,

Hu,

Gao

2023

Molecules

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Effects of CaO and Fe<sub>2</sub>O<sub>3</sub> on the Microstructure and Mechanical Properties of SiO<sub>2</sub>–CaO–MgO–Fe<sub>2</sub>O<sub>3</sub> Ceramics from Steel Slag

Cited by 27 publications

References 27 publications

Effect of Phase Composition on Leaching Behavior and Mechanical Properties of Ceramics from Ferrochrome Slag and Tundish Slag

Effect of Phase Composition on Leaching Behavior and Mechanical Properties of Ceramics from Ferrochrome Slag and Tundish Slag

Influence of Solid Waste Material Content on the Properties of Steel Slag-Waste Clay Brick Ceramic Bricks

Editorial for the Special Issue: “Spatial Structure of Minerals”

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