TC18: Glass Melting
The title of TC18 recently changed from “Properties of Glass Forming Melts” into “Glass Melting”. Its members stimulate co-operation between different Technical Committees operating within the cluster “Glass Production” and strives for further actions within the 4 main topics identified and described during the 2008-BRIG expert meeting “Innovative Glass Melting for the year 2020”.
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Activities and plans
MAIN GOALS OF TC18
TC18 promotes both fundamental and applied research on phenomena connected to glass melting processes. It supports co-operation among technical committees involved in the cluster Glass Production.
PROJECTS
- The project on Nucleation of Bubbles in Glass Melt
The aim of the project is to understand the mechanism and kinetics of bubble nucleation, to restrict bubble defects and to study the effect of bubble nucleation process on melting improvement. First step of the project involves the Round Robin Test on the determination of the nucleation temperature. The proposed method is based on high temperature observation of bubble nucleation on Pt wire immersed in the glass melt. Two samples of commercial float glasses delivered by AGC and Sisecam were chosen for the study. The project is carried out in cooperation with TC14.
Following table summarizes the results of the determination of the nucleation temperature were delivered by RRT participants: UCT Prague, AGC, NEG, Celsian and Glass Service.
| AGC Sample | Sisecam Sample | |||
| Laboratory | TN (°C) | St.dev(°C) | TN (°C) | St.dev(°C) |
| UCT Prague | 1490.7 | 3.5 | 1500.9 | 2.4 |
| AGC | 1492.3 | 1.5 | 1500.1 | 2.0 |
| Celsian | 1481.5 | 1.6 | 1484.9 | 8.5 |
| Glass Service | 1480.1 | 3.8 | 1499.7 | 2.3 |
| NEG | 1485.0 | 3.5 | 1501.0 | 1.9 |
2. The project on Batch Melting Kinetics
The goal of the project is to develop a standard test to evaluate melting kinetics of glass forming raw material batches. In the initial stage of the project, the suitable experimental procedure was discussed and the experimental setup was proposed. The project will be associated with the proposed project of the TC14 focused on the analysis of bubbles nucleated on dissolving sand grains.
ACTIVITY OF TC 18 IN 2016
TC 18 met during ESG Conference in Sheffield, September 4, 2016. The meeting was attended by 16 persons.
TC members approved Mathieu Hubert as Vice-chairman of the TC 18.
The final results of RRT on Determination of the Temperature of the Bubble Nucleation were presented (J.Klouzek) and evaluated.
Experimental methods for the Determination of Batch Free Time were presented (J.Klouzek) and discussed.
Paper on the modelling of the conversion of nuclear waste melter feed to glass was presented by R.Pokorny (UCT Prague).
PLANS FOR YEAR 2017
1. TC18 meeting during 32nd Şişecam Glass Symposium in Istanbul, Turkey on October 22-25th 2017.
2. Batch Melting Kinetics Project
The launch of the Round Robin Test on the Determination of Batch Free Time.
SUMMARY
TC18 promotes the activities in the field of both fundamental and application research concerning stages in the glass melting process. It supports co-operation among technical committees involved in the cluster Glass Production.
The projects in 2016 included the Round Robin Test on the Determination of the Temperature of the Bubble Nucleation. The test was completed by delivering results from five participating laboratories, UCT Prague, Celsian, AGC, NEG and Glass Service.
TC members approved Mathieu Hubert as Vice-chairman of the TC 18.
Plans for the year 2017 continuation of the project Batch Melting Kinetics, which will be associated with the proposed project of the TC14 focused on the analysis of bubbles nucleated on dissolving sand grains.
The mutual meeting of the TC 14 and 18 is planned during 32nd Şişecam Glass Symposium in Istanbul, Turkey on October 22-25th 2017.
Committee Members: back to top
| Chopinet, Marie-Hélène |
| Conradt, Reinhard |
| Hofmann, Kim-Oliver |
| Hrma, Pavel |
| Hubert, Mathieu |
| Hupa, Leena |
| Janos, Filip |
| Kawaguchi, Masataka |
| Kii, Yasushi |
| Kitamura, Rei |
| Klouzek, Jaroslav Committee Position: Chair |
| Koepsel, Detlef |
| Linz, Wilfried (Mr) |
| Lipetz, Robert |
| Maehara, Terutaka |
| Muijsenberg, Erik |
| Nemec, Lubomir (Prof) |
| Oran, Mustafa (Dr) |
| Pfeiffer, Thomas |
| Pigeonneau, Franck |
| Pokorny, Richard |
| Roger, Ulrich |
| Roos, Christian |
| Sesigur, Hande (Mrs.) |
| Tetsuji, Yano |
| Ullrich, Jiri |
| Yoshida, Noriyuki |
Committee Contact Details: back to top
TC18: Glass Melting
Prof Jaroslav Klouzek
Czech Republic
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