Mineralogy and thermal expansion study of mullite-based ceramics synthesized from coal fly ash and aluminum dross industrial wastes

Some industrial wastes are shown to be useful in the production of mullite ceramics. These industrial wastes are rich in certain metal oxides such as silica (SiO2) and alumina (Al2O3). This gives wastes the potential to be used as a starting material source for mullite ceramics preparation. The purpose of this review paper is to compile and review various mullite ceramics preparation methods that utilized a variety of industrial wastes as starting materials. This review also describes the sintering temperatures and chemical additives used in the preparation and its effects. A comparison of both mechanical strength and thermal expansion of the reported mullite ceramics prepared from various industrial wastes were also addressed in this work.

https://www.mdpi.com/2313-4321/4/3/39/pdf

A Review on Synthesis of Mullite Ceramics from Industrial Wastes

In recent years, the amount of agricultural and industrial wastes being generated is increasing rapidly. This leads to numerous disposals, governance, and environmental issues. Therefore, the re-utilisation of these wastes into value-added products such as mesoporous silica nanoparticles (MSNs) has attracted great attention. MSNs have garnered immense attention in various applications owing to their tuneable pore dimensions, high surface areas, and tailorable structure, suitable for different post-functionalisation. In this review, recent progress on the synthesis of MSNs from waste using a chemical synthesis route is presented. This route offers the possibility to control silica structure, phase, morphology, and sizes by fine tuning the reaction parameters/conditions. The characteristics and applications of the MSNs produced are also analysed to examine the potential of using agricultural and industrial waste as the silica precursor. Although the use of inexpensive waste-derived materials seems promising for both waste reduction and value-added products synthesis, further research is still needed to boost the production of silica especially at a larger scale. 

Agricultural and industrial waste-derived mesoporous silica nanoparticles: A review on chemical synthesis route

Microstructural evolution and densification behavior of porous kaolin-based mullite ceramic added with MoO3

Preparation and properties of mullite-SiC-O′-SiAlON composites for application in cement kiln

Effect of yttria on sintering and microstructural behavior of reaction sintered mullite based on bauxite, fly ash and precipitated silica

In the present investigation alumina-mullite composites with various mole ratios of Al2O3 and SiO2 were generated by interacting fly ash with bauxite. The magnitude of sintering was examined by exa...

Alumina-Mullite Composites through Interaction of Bauxite and Fly Ash

Utilization of Birbhum China clay, West Bengal for manufacturing of electrical porcelain insulators

Present investigation was undertaken to study the effect of addition of TiO 2 as dopant on the physico-mechanical properties of triaxial porcelain. Fabricated samples are sintered at differenttemperatures ranging from 1250 to 1400°C. Magnitude of sintering was determined by measuring some fired characteristics including shrinkage, apparent porosity and true density. The evolution of crystalline phases and the microstructures havebeen studied using X-ray diffractometry and scanning electron microscopy.The results obtained clearly demonstrate that TiO 2 may be added up to 2% to obtain a porcelain body with good physic-mechanical properties when sintered at 1300 o C

Arabinda Mondal

Papers

Effect of yttria on sintering and microstructural behavior of reaction sintered mullite based on bauxite, fly ash and precipitated silica

Alumina-Mullite Composites through Interaction of Bauxite and Fly Ash

Utilization of Birbhum China clay, West Bengal for manufacturing of electrical porcelain insulators

Effect Of Addition of Tio2 As Dopant On The Physico- Mechanical Properties of Triaxial Porcelain