Characterization of alumina crucible made from aluminum industrial waste

Sornlar, Watcharee; Choeycharoen, Pattarawan; Wannagon, Anucha

doi:10.1007/s41779-019-00395-7

Cited by 5 publications

(3 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The increased aluminium content can be attributed to the use of alumina crucibles. Alumina crucibles are composed of Al 2 O 2 [57]. These crucibles are rated for use up to 1500 • C [57,58].…”

Section: Smeltingmentioning

confidence: 99%

See 1 more Smart Citation

A Comparison of Methods for the Characterisation of Waste-Printed Circuit Boards

Yken

Cheng

Boxall

et al. 2021

Metals

View full text Add to dashboard Cite

Electronic waste is a growing waste stream globally. With 54.6 million tons generated in 2019 worldwide and with an estimated value of USD 57 billion, it is often referred to as an urban mine. Printed circuit boards (PCBs) are a major component of electronic waste and are increasingly considered as a secondary resource for value recovery due to their high precious and base metals content. PCBs are highly heterogeneous and can vary significantly in composition depending on the original function. Currently, there are no standard methods for the characterisation of PCBs that could provide information relevant to value recovery operations. In this study, two pre-treatments, smelting and ashing of PCB samples, were investigated to determine the effect on PCB characterisation. In addition, to determine the effect of particle size and element-specific effects on the characterisation of PCBs, samples were processed using four different analytical methods. These included multi-acid digestion followed by inductively coupled plasma optical emission spectrometry (ICP-OES) analysis, nitric acid digestion followed by X-ray fluorescence (XRF) analysis, multi-acid digestion followed by fusion digestion and analysis using ICP-OES, and microwave-assisted multi-acid digestion followed by ICP-OES analysis. In addition, a mixed-metal standard was created to serve as a reference material to determine the accuracy of the various analytical methods. Smelting and ashing were examined as potential pre-treatments before analytical characterisation. Smelting was found to reduce the accuracy of further analysis due to the volatilisation of some metal species at high temperatures. Ashing was found to be a viable pre-treatment. Of the four analytical methods, microwave-assisted multi-acid digestion offered the most precision and accuracy. It was found that the selection of analytical methods can significantly affect the accuracy of the observed metal content of PCBs, highlighting the need for a standardised method and the use of certified reference material.

show abstract

Section: Smeltingmentioning

confidence: 99%

“…Alumina crucibles are composed of Al 2 O 2 [57]. These crucibles are rated for use up to 1500 • C [57,58]. However, they are not considered optimal when determining the aluminium content in samples [56,58].…”

Section: Smeltingmentioning

confidence: 99%

A Comparison of Methods for the Characterisation of Waste-Printed Circuit Boards

Yken

Cheng

Boxall

et al. 2021

Metals

View full text Add to dashboard Cite

show abstract

“…At present, the main method for preparing most superalloys is vacuum induction melting [6,7]. Crucibles [8][9][10] are employed as the container for vacuum induction melting, and their performance and quality are very important for the preparation of superalloys.…”

Section: Introductionmentioning

confidence: 99%

Alumina-based crucibles with enhanced thermal shock resistance via reinforcement of mullite fibers

2023

jmpd

View full text Add to dashboard Cite

Crucible is the indispensable vessel in smelting of superalloy, and the service life of crucibles is quite important to the development of superalloy. In order to extend the service life of crucible for superalloy smelting, alumina-based crucibles are prepared by slip casting, and mullite fibers are used as reinforcement phase. The effect of mullite fibers on the microstructure and property of the crucibles was studied. The appropriate content of mullite fibers are beneficial to the comprehensive performance of the crucibles. The reinforcement mechanism of mullite fibers includes crack deflection, fiber extraction, and fiber bridging, through which fibers hinder the initiation and propagation of cracks in ceramics. For the crucible samples with 3 wt% of mullite fibers, the values of flexure strength are 22.47 MPa and 19.14 MPa at room temperature and high-temperature, respectively. After thermal shock for 5 times, the residual room-temperature flexural strength is 16.65 MPa and the strength retention rate is 74.1%. It is confirmed that, the 3 wt% of mullite fibers improves the thermal shock resistance of the crucible, which is beneficial for extending the service life of the crucible for superalloy melting.

show abstract

Fabrication and properties of U-shaped NiFe2O4 ceramic tube produced by slip casting and pressureless sintering

Zhang

Cao

et al. 2021

J Aust Ceram Soc

View full text Add to dashboard Cite

Characterization of alumina crucible made from aluminum industrial waste

Cited by 5 publications

References 18 publications

A Comparison of Methods for the Characterisation of Waste-Printed Circuit Boards

A Comparison of Methods for the Characterisation of Waste-Printed Circuit Boards

Alumina-based crucibles with enhanced thermal shock resistance via reinforcement of mullite fibers

Fabrication and properties of U-shaped NiFe2O4 ceramic tube produced by slip casting and pressureless sintering

Contact Info

Product

Resources

About