The optimal parameters of bubble centrifuging in glass melts

0367127 - ÚACH 2012 RIV NL eng J - Journal Article
Tonarová, V. - Němec, Lubomír - Kloužek, Jaroslav
The optimal parameters of bubble centrifuging in glass melts.
Journal of Non-Crystalline Solids. Roč. 357, 22-23 (2011), s. 3785-3790. ISSN 0022-3093. E-ISSN 1873-4812
R&D Projects: GA MPO 2A-1TP1/063
Institutional research plan: CEZ:AV0Z40320502
Keywords : glass * bubble * centrifuging * modelling
Subject RIV: JH - Ceramics, Fire-Resistant Materials and Glass
Impact factor: 1.537, year: 2011

The mathematical model of a multicomponent bubble in a glass melt under the influence of gravitational and centrifugal fields has been applied in the model TV glass. The optimal fining conditions have been examined in a rotating cylinder with the aim of determining their general features. All of the dependences between the bubble-removal time and the rotational velocity showed the region of bubble removal by centrifuging at low cylinder rotational velocities and the region of complete bubble dissolution when the rotation was intensive. The low rotational velocities, characterised by the minimal bubble-centrifuging time, appeared to be suitable for industrial application. Consequently, the influence of temperature, pressure and glass-layer thickness on the value of the optimal rotational velocity and optimal fining time of small-critical bubbles has been investigated in detail in a glass melt containing fining agent.
Permanent Link: http://hdl.handle.net/11104/0201902