Lead recovery and high silica glass powder synthesis from waste CRT funnel glasses through carbon thermal reduction enhanced glass phase separation process

Ming, Xing; Fu, Zegang; Wang, Yaping; Wang, Jingyu; Zhang, Zhiyuan

doi:10.1016/j.jhazmat.2016.10.012

Cited by 28 publications

(5 citation statements)

References 22 publications

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“…From a recycling point of view, lead-containing waste glass can be used to produce anti-radiation materials or it can be decomposed into individual substances/elements that can be reused to produce new materials [16].…”

Section: Introductionmentioning

confidence: 99%

Thermal expansion and structural properties of some (PbO)x(ZnO)35−x(TeO2)65 glasses

Schwarz

Tichá

2021

SN Appl. Sci.

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The glasses (PbO)x(ZnO)35−x(TeO2)65 with 0 < x < 25 were prepared by conventional melting method. The substitution of ZnO by PbO leads to a decrease in the glass transition temperature (Tg) from 338 to 280 °C and an increase in the linear coefficient of thermal expansion (α) from 15.8 to 19.2 ppm K−1. A correlation between α and Tg has been confirmed by the Lindemann rule. The two prediction methods of the coefficient of thermal expansion (α) were compared with experimental values: the simple additivity model and the Mackenzie method. From Raman spectra, it is evident that the substitution of ZnO by PbO leads mainly to the conversion of TeO4 structural units to TeO3 structural units. This conversion leads to network depolymerization.

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Section: Introductionmentioning

confidence: 99%

Thermal expansion and structural properties of some (PbO)x(ZnO)35−x(TeO2)65 glasses

Schwarz

Tichá

2021

SN Appl. Sci.

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“…According to research by Wahyudi and Amalia [18], silica sand leaching can produce chemical products with compositions of 98.75% SiO2, 0.079% TiO2, 0.054% Al2O3, 0.389% Fe2O3 and 0.25% LOI. However, the leaching process to obtain relatively high levels of silicon dioxide or quartz has very expensive costs [19,20] .…”

Section: Introductionmentioning

confidence: 99%

“…They use commercial aluminium, not aluminium recycled as a matrix and commercial silica as well or leached silica for filler. Yet, the cost of leaching to obtain SiO2 of high purity levels and the cost of processing primary aluminium are still very expensive [19,20]. Based on these conditions, the purpose of this study is to increase the direct utilization of silica sand tailings, without being preceded by a leaching process as a filler material and using a matrix made from recycled aluminium alloy.…”

Section: Introductionmentioning

confidence: 99%

Characterization of aluminium matrix composite of Al-ZnSiFeCuMg alloy reinforced with silica sand tailings particles

Sukanto

Soenoko

Suprapto

et al. 2020

JMES

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Due to the increased demand for aluminium and the prohibitive cost of producing primary aluminium, the process of making AMCs using recycled aluminium alloy as a matrix and silica sand tailing without leaching as a filler is essential to be developed. For more cost-effective, the purpose of this study is to make particulate aluminium composite matrix AMCs with a matrix of recycled aluminium and reinforced with silica sand tailing without leaching. This research involves the effect of differences in grain size and filler weight percentage on matrix Al-ZnSiFeCuMg recycled aluminium alloy powder. This study used powder metallurgy technology as well as two-way hot-compaction (300°C) and applied a sintering temperature of 550°C. Density, hardness, and wear testing, as well as microstructure analysis, were conducted to determine the characteristics of the resulting AMCs. An increase in hardness of 67% was achieved by the AMCs-164 µm-20%SiO2 specimen, which used a filler grain size of 164 µm wt.20%. Meanwhile, AMCs-31 µm-20%SiO2, which used a filler grain size of 31 µm, only increased by 63%. The wear test result also showed a lower wear rate achieved by the AMCs-164 µm-20%SiO2 specimen. The results analyses using SEM-EDS instruments showed higher agglomeration and porosity in specimens using a filler grain size of 31 µm, while AMCs using a filler grain size of 164 µm showed an even spread of filler powder. Therefore, AMCs that used 164 µm powder-sized fillers have a stronger bond between the filler and the matrix and produce AMCs that are harder than AMCs that use 31 µm fillers.

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“…The main component of mirabilite is Na 2 SO 4 , which is mainly used as a clarifying agent for glass liquid in production [26]. Carbon powder can adjust the redox atmosphere of the liquid glass, to adjust its melting quality, for example, to reduce the bubbles generated in the melting process [27]. Potassium carbonate can improve the transparency, strength and refractive coefficient of glass [11].…”

Section: Data Acquisition and Quality Parameters Calculation Methodsmentioning

confidence: 99%

Optimization Model of Raw Material Selection Process for Complex Industry Based on Improved Sequential Quadratic Programming Algorithm

Zhang

Hong

et al. 2022

Int J Comput Intell Syst

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Raw materials for industrial production mainly come from nature with wide sources and uneven quality, while production requires strictly with the materials’ quality and their quality indicators are very mutual coupling. In actual production, unreasonable combination and formula often exist in the process of raw material selection, impeding the improvement of production efficiency, quality, energy-saving, and emission reduction. Unfortunately, research on this actual issue is currently vacant, so the main object of this paper is to address the selection of raw materials and formulations in actual production. Based on the designed logical combination algorithm and improved SQP algorithm, this study established the batch combination model and formula calculation model from the perspective of optimal combination and formula. Finally, a practical example of actual production is given to demonstrate the utility and application of this research.

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Lead recovery and high silica glass powder synthesis from waste CRT funnel glasses through carbon thermal reduction enhanced glass phase separation process

Cited by 28 publications

References 22 publications

Thermal expansion and structural properties of some (PbO)x(ZnO)35−x(TeO2)65 glasses

Thermal expansion and structural properties of some (PbO)x(ZnO)35−x(TeO2)65 glasses

Characterization of aluminium matrix composite of Al-ZnSiFeCuMg alloy reinforced with silica sand tailings particles

Optimization Model of Raw Material Selection Process for Complex Industry Based on Improved Sequential Quadratic Programming Algorithm

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