Preparation of high closed porosity foamed ceramics from coal gangue waste for thermal insulation applications

Li, Xiang; Pan, Mengbo; Tao, Mengya; Liu, Wei; Gao, Zhengxia; Ma, Chengliang

doi:10.1016/j.ceramint.2022.08.280

Cited by 51 publications

(13 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The resource utilization of industrial solid waste is not only low-cost and high-revenue but also important for diversifying resource utilization and environmental protection. 15 Zhang et al 9 used nickel slag and scrap glass as the main raw materials and sodium carbonate as the foaming agent. It was shown that the foamed ceramics with a bulk density of about .498 g/cm 3 , a compressive strength of 2.66 MPa, and a porosity of 80.06% could be prepared using a design based on a slab formulation.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Ca and Mg on the properties of foamed ceramics prepared with multisolid waste

Cheng

Duan

Liu

et al. 2023

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

With vanadium tailings and lead-zinc tailings as the main raw materials, gold tailings, waste glass powder, other fluxes and SiC foaming agents are added to prepare foamed ceramics. The effects of Ca and Mg in the fluxes of calcite, talc, and dolomite on the appearance, pore size, porosity, bulk density, and compressive strength of the samples were investigated and the mechanisms of the effects were analyzed. The XRD results showed that the sample consisted primarily of quartz, albite, augite, and a small amount of corundum. Calcite favors the formation of the augite phase, talc favors the formation of the albite phase, and dolomite combines the advantages of both. The formation of albite reduces the viscosity of the melt, and the formation of augite greatly enhances the strength of foamed ceramics. It has been shown that by adding 8% dolomite, a foaming ceramic with a bulk density of .561 g/cm 3 , a porosity of 62.77% and a compressive strength of 10.823 MPa can be prepared, resulting in a low-cost, lightweight and high strength foamed ceramic partition.

show abstract

Section: Introductionmentioning

confidence: 99%

“…The utilization of low‐cost industrial solid waste for the preparation of foamed ceramics has clear advantages. The resource utilization of industrial solid waste is not only low‐cost and high‐revenue but also important for diversifying resource utilization and environmental protection 15 . Zhang et al 9 .…”

Section: Introductionmentioning

confidence: 99%

Effect of Ca and Mg on the properties of foamed ceramics prepared with multisolid waste

Cheng

Duan

Liu

et al. 2023

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

show abstract

“…Typical methods for preparing CG-based porous ceramics are shown in Figure 6, including the pore-forming additive method, 87,88 template method, 27,89 solid-phase reaction method, 90 and polymeric sponge impregnation method, 45 and the components of ceramics produced include mullite, 87,90-95 cordierite, 45 and others. [96][97][98] Table 2 compares several methods of synthesizing porous ceramics with CG as the raw material. According to Table 2, the porosity and properties of the materials obtained by different methods were various.…”

Section: Porous Ceramics and Glassesmentioning

confidence: 99%

“…CG is rich in Al 2 O 3 and SiO 2 , which are beneficial for the production of silicoaluminate ceramics. Typical methods for preparing CG‐based porous ceramics are shown in Figure 6, including the pore‐forming additive method, 87,88 template method, 27,89 solid‐phase reaction method, 90 and polymeric sponge impregnation method, 45 and the components of ceramics produced include mullite, 87,90–95 cordierite, 45 and others 96–98 …”

Section: Porous Materials Made From Coal Ganguementioning

confidence: 99%

“…From the perspective of the added value of materials, the typical graphs and features of porous materials prepared from CG are summarized in Figure 15. As the table shows, macroporous materials from CG, such as cement‐based porous materials, 74 porous bricks, 43 porous ceramics and glasses, 98 and porous geopolymers, 107 have good mechanical properties, a simple preparation process, and a low cost, but as traditional building materials, their added value is often low. Due to the poor cementation performance and volcanic ash activity of CG, the utilization efficiency of CG as a raw material is restricted to some extent.…”

Section: Porous Materials Made From Coal Ganguementioning

confidence: 99%

See 1 more Smart Citation

Fabrication and application of porous materials made from coal gangue: A review

Shao

Zheng

et al. 2023

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

Coal gangue (CG), which is mainly generated during coal excavation, mining, and coal washing, is an industrial solid waste that is recognized as an environmental pollutant. The ever‐increasing amount of CG produced is a serious threat to the ecological environment and property safety, especially in China, which is the largest coal producer and consumer in the world. Considerable studies have investigated means for utilizing CG worldwide. This review summarizes and discusses various porous inorganic materials made from CG, including cement‐based porous materials, porous bricks, porous ceramics (cordierite and mullite) and glasses, porous geopolymers, zeolites, aerogels, and porous carbon materials. Different preparation processes and performances of each type of porous inorganic materials were reviewed. Porous CG‐based materials can be used as promising adsorbents for the removal of various pollutants and have good potential for use in construction industry as well as catalyst material applications. Besides, porous materials obtained from CG have also been tested as slow‐release fertilizers after the absorption of phosphate, as electrode materials, and as oil‐in‐water separation agents. The systematic summary of porous materials based on CG aims at promoting high‐value‐added applications for this waste. Future research directions for the use of CG as a raw material are also presented.

show abstract

Microstructure Characteristics and Possible Phase Evolution of the Coal Gangue-Steel Slag Ceramics Prepared by the Solid-State Reaction Methods

Liu,

Wang,

et al. 2024

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

View full text Add to dashboard Cite

Preparation of high closed porosity foamed ceramics from coal gangue waste for thermal insulation applications

Cited by 51 publications

References 37 publications

Effect of Ca and Mg on the properties of foamed ceramics prepared with multisolid waste

Effect of Ca and Mg on the properties of foamed ceramics prepared with multisolid waste

Fabrication and application of porous materials made from coal gangue: A review

Microstructure Characteristics and Possible Phase Evolution of the Coal Gangue-Steel Slag Ceramics Prepared by the Solid-State Reaction Methods

Contact Info

Product

Resources

About