Application of molecular interaction volume model in separation of Ti-Al alloys in vacuum distillation

Odusote, Yisau Adelaja; Jabar, Jamiu Mosebolatan; Bolarinwa, H.S.; Akinbisehin, A.B.

doi:10.1016/j.vacuum.2019.108885

Cited by 11 publications

(3 citation statements)

References 30 publications

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“…In the study of thermodynamic properties, the activity and activity coefficients of liquid alloys have been one of the important topics of research [6] . Earlier, the activity coefficients were mainly obtained by experimental measurements, but for high-temperature alloy melts with high activity, such as titanium alloys, it is difficult to obtain their liquid thermal properties parameters by experimental means, so a new idea of prediction by building theoretical models was opened [7,8] .…”

Section: Introductionmentioning

confidence: 99%

Study of elemental volatilization patterns in electron beam cold hearth melting of TA10 titanium alloy

He,

Liu,

et al. 2024

Ninth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023)

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The prediction of thermodynamic properties of alloy melts in multi-element systems based on molecular interaction volume modeling (MIVM) requires only the basic physical parameters of the alloying elements to be passed, while simplifying the calculation process. In this paper, the algorithm is used to calculate the activity coefficients of the melt members of Ti-5Al-2.5Sn and Ti-0.3Mo-0.8Ni alloys and the calculated values agree with the experimental values. The activity coefficients of each member of the Ti-0.3Mo-0.8Ni-2Al-1Zr alloy melt was predicted. According to the volatilization model, the volatilization trend of each element in the process of Electron Beam Cold Hearth Melting(EBCHM) polyhedral alloy TA10(Ti-0.3Mo-0.8Ni-2Al-1Zr) was predicted, and the accuracy of the theoretical model was verified by melting experiments.

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Section: Introductionmentioning

confidence: 99%

Study of elemental volatilization patterns in electron beam cold hearth melting of TA10 titanium alloy

He,

Liu,

et al. 2024

Ninth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023)

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“…Compared with traditional smelting methods, vacuum metallurgical technology has some advantages: efficient resource utilization, high metal recovery rate, short metallurgical process, low energy consumption, good working conditions, and considerable economic benefits. It does not generate pollutants, such as waste gas, waste water, waste residue, and other contaminants [23][24][25][26]. This study, therefore, explored a novel vacuum method to recycle tellurium from TLAS, mainly adopting: (1) elucidate the element composition and occurrence state of TLAS, distilled residue, and volatile; (2) analyze the separation and recovery effects in terms of each pure substance and oxide's saturated vapor pressure in TLAS; (3) explore the distribution rule of tellurium in the vacuum gasification-directional condensation process.…”

Section: Introductionmentioning

confidence: 99%

Vacuum Gasification-Directional Condensation for Separation of Tellurium from Lead Anode Slime

Gao

Kong

et al. 2021

Metals

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Tellurium is the indispensable base material of semiconductors in solar panels. Traditional tellurium recycling, a highly complicated separation process, has exhausted reagents and energy sources whilst producing waste residue and water containing multitudinous heavy metal that is hugely harmful to the ecological environment. A clean and eco-friendly vacuum distillation-directional condensation treatment was investigated for its potential to recycle tellurium from tellurium-rich lead anode slime (TLAS). The optimal distillation temperature and response time conditions of 1173 K and 50 min were obtained based on a large number of experiments. Gasification results indicated that under the optimal conditions of distillation temperature 1173 K, constant temperature time 50 min, and system pressure 5–15 Pa, 92% of tellurium was volatilized and enriched into the condenser from TLAS. Condensate results revealed that 88% of elemental tellurium was directly recovered in the volatile matter. The appropriate gasification-condensation processes realized a clean utilization to extract tellurium and separate multi valuable metals effectively.

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“…Due to the thermal cracking of high molecular weight components that are present in CT [29][30][31], the distillation process is accomplished under vacuum below 300 °C. The advantages of vacuum distillation processing are increasing relative volatilities at lower pressures and reducing the temperature requirement at lower pressures in the system [32,33].…”

Section: Introductionmentioning

confidence: 99%

Preventing of flooding phenomena on vacuum distillation trays column via controlling coking value factor

2020

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The occurrence of flooding phenomena (FP) on the vacuum distillation trays column (VDTC) is investigated on a refinery in the middle region of Iran. Accumulation of coke sediment that is occasionally observed in refinery processing using coal tar (CT) feeding is the main reason of the FP on VDTC. This usually occurs at the down-comer areas and the seal pans of the column. Quinolone insoluble (QI) and toluene insoluble (TI) parameters, two routine methods used to measure coke containing sediments, are employed to determine probable critical areas of FP at the down-comers and the seal pans of CT feed in this study. Analyzing the obtained results of QI and TI tests demonstrated that FP at the column is directly related to the quality of CT feeding. For instance, when the QI of the inlet CT in battery 1 increases from 0.56%W in the first sample to 6.5%W in the 25th sample, the vacuum pressure at the top of the distillation column is reduced from − 230 mbar to − 420 mbar. To prevent sediment accumulation of coke and the occurrence of FP, the CT feeds are centrifuged to reduce coke sedimentation at the down-comer areas and the seal pans of VDTC. Moreover, the seal pan trays are replaced by normal ones and all moveable valves with 25 mm diameter on trays 15 and higher in the column, where coke sediment accumulation is observed the most, are modified by installing wider fixed valve (40 mm diameter) trays.

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Application of molecular interaction volume model in separation of Ti-Al alloys in vacuum distillation

Cited by 11 publications

References 30 publications

Study of elemental volatilization patterns in electron beam cold hearth melting of TA10 titanium alloy

Study of elemental volatilization patterns in electron beam cold hearth melting of TA10 titanium alloy

Vacuum Gasification-Directional Condensation for Separation of Tellurium from Lead Anode Slime

Preventing of flooding phenomena on vacuum distillation trays column via controlling coking value factor

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