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

  1. 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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