Preparation of high strength foam ceramics from sand shale and steel slag

Tang, Zijuan; Liang, Jing; Jiang, Weihui; Liu, Jianmin; Jiang, Feng; Feng, Guo; Lao, Xinbin; Tang, Huidong; Wang, Tao

doi:10.1016/j.ceramint.2019.12.179

Cited by 34 publications

(15 citation statements)

References 30 publications

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“…From sample A1 to sample A3, with the addition of boric acid, the crystal amount of diopside and Albite High increases, while the crystal amount of quartz decreases, indicating that boric acid makes a difference to the crystal phase peak of the sample. The crystal phase constitutes the framework of foamed ceramic; the strength and thermal conductivity can be changed by changing the amount of crystalline phase of the sample 22,27 . From sample A4 to sample A6, with the addition of boric acid, the amount of crystal of diopside and Albite high decreases, while the amount of crystal of quartz increases.…”

Section: Resultsmentioning

confidence: 99%

“…[17][18][19][20][21] Foaming agents are indispensable in high temperature foaming. Among various foaming agents, silicon carbide 14 and silicon nitride 17 are widely used. SiC has been widely studied by researchers due to low cost.…”

Section: Introductionmentioning

confidence: 99%

“…Currently, the utilization rate is only about 37%, which has become one of the key factors, restricting the sustainable development of gold industry 13 . In fact, gold tailings contain large amounts of flux such as K 2 O, Na 2 O, that is, which was beneficial to reduce the softening temperature of ceramics 14 . However, most gold tailings were still piled in tailings reservoir 15 …”

Section: Introductionmentioning

confidence: 99%

“…SiC has been widely studied by researchers due to low cost. The silicon carbide particles react with the surrounded O 2 at 980℃ to generate gas, and the temperature of foamed ceramics to melt was suitable 22–25 . Shui et al 26 .…”

Section: Introductionmentioning

confidence: 99%

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Utilization of gold tailings for the construction of foamed ceramics used in external insulation buildings

Duan

Meng

et al. 2022

Int J Applied Ceramic Tech

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The utilization of gold tailings and bentonite as raw materials for prepared foamed ceramic was studied. The effects of boric acid and titanium dioxide content on the properties and microstructures of foamed ceramic were studied from the aspects of bulk density, compressive strength, bending strength, phase composition, and micromorphology. These results show that the synergistic effect of boric acid and titanium dioxide leads to the crystallization of quartz, which enhanced the compressive strength and bending strength and decreased the thermal conductivity of foamed ceramics, while the bulk density increases gradually with the addition of titanium dioxide. Taking into account all of these properties, the optimal results are as follows: bending strength of 1.111 MPa, compressive strength of 1.165 MPa, bulk density of 0.258 g/cm3, the porosity of 81.89%, the thermal conductivity of 0.088 (W/(m⋅K)). This study indicated that gold tailings are a promising candidate for the preparation of foamed ceramics used as external insulation building materials.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Utilization of gold tailings for the construction of foamed ceramics used in external insulation buildings

Duan

Meng

et al. 2022

Int J Applied Ceramic Tech

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“…He et al prepared steel slag ceramic by mixing with fly ash, microsilica, and quartz, and the main phases were diopside and anorthite [14]. Tang et al successfully prepared high strength foam ceramics by mixing steel slag with other sand shale [15]. Zong et al achieved pyroxene ceramics by the mixture of red muds and steel slag at high temperature [16].…”

Section: Introductionmentioning

confidence: 99%

Effect of Al2O3–SiO2 Addition on Gehlenite Growth and the Mechanical Performance of Steel Slag

Song

Cao

et al. 2021

Crystals

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Steel slag, as industrial solid waste, is difficult to recycle owing to its complex components and poor mechanical properties. However, steel slag can be modified by adding Al2O3–SiO2 through high temperature sintering, which would improve the mechanical properties and expand the scope of its application. The phase changing, morphology evolution and the mechanical properties of the modified steel slag were investigated. The results indicate that the main phase changes to gehlenite occur with increasing temperature. The compressive strength increases to 115 MPa at 1350 °C. The relationship of the quantity of gehlenite and the compressive strength were explored.

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